CN113783284B - Cross-voltage-class self-adaptive blocking standby power automatic switching implementation method - Google Patents
Cross-voltage-class self-adaptive blocking standby power automatic switching implementation method Download PDFInfo
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- CN113783284B CN113783284B CN202110846260.0A CN202110846260A CN113783284B CN 113783284 B CN113783284 B CN 113783284B CN 202110846260 A CN202110846260 A CN 202110846260A CN 113783284 B CN113783284 B CN 113783284B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
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Abstract
The invention relates to the technical field of electric power secondary equipment, and discloses a method for realizing self-adaptive blocking spare power automatic switching across voltage levels, which comprises a spare power automatic switching body, wherein a high-voltage side unit, a low-voltage side unit and an operation unit are arranged on the spare power automatic switching body; the high-voltage side spare power automatic switching unit is provided with a high-voltage side switching value input module, a high-voltage side analog value input module and a high-voltage side switching value output module; the low-voltage side spare power automatic switching unit is provided with a low-voltage side switching value input module, a low-voltage side analog value input module and a low-voltage side switching value output module; eight spare power automatic switching modes are arranged in the operation unit, wherein the first mode to the fourth mode are the operation of the switching value and analog quantity information of the high voltage side; the fifth to eighth modes are operations of low-voltage side switching value and analog quantity information. Compared with the prior art, the invention integrates the spare power automatic switching devices with different voltage levels into one device, and self-adaptively locks the spare power automatic switching device according to the external protection action conditions such as the main transformer, so that the action of the spare power automatic switching device is more scientific and reasonable.
Description
Technical Field
The invention relates to the technical field of electric power secondary equipment, in particular to a method for realizing self-adaptive blocking spare power automatic switching of a cross-voltage class.
Background
The spare power automatic switching device (a spare power source or an automatic equipment switching device) is used as an inseparable part of secondary equipment of the power system, and plays a very important role in ensuring the power supply reliability of the power system and the like. With the continuous expansion of the power grid scale and the increasing requirement of users on the reliability of power supply, on one hand, the application of the spare power automatic switching in the system needs to be increased, on the other hand, the function of the spare power automatic switching needs to be continuously perfected, the operation logic of the spare power automatic switching is simplified, and the action accuracy and the reliability of the spare power automatic switching are improved.
The current automatic backup switching device is widely applied to 110kV and below systems, a plurality of automatic backup switching devices are required to be configured for power grids with different voltage levels of a transformer substation, each automatic backup switching device is connected to information data with respective voltage levels to operate independently, the high-voltage side device and the low-voltage side device are required to be matched according to different time, sometimes different manufacturer devices have different time timing modes, or a human setting time error is caused, and the action matching problem of two automatic backup switching devices with different voltage levels is possibly caused, so that the power failure accident of the power grid is caused. In addition, according to the operation requirement, an inner bridge connection mode is adopted at the high-voltage side, a single-bus sectional connection mode is adopted at the low-voltage side, and whether two main transformers need to be locked or not during protection action is required, so that different protection actions are required according to the current primary connection mode, and different locking requirements exist. Therefore, the device can be integrated into a spare power automatic switching device for a transformer substation at present, investment is saved, the matching between the devices can be realized internally, the external protection action blocking like a main transformer can be realized in one device, the device is simple and reliable, and particularly for the intelligent transformer substation based on IEC61850 protocol at present, the access of external switching value and analog value is more convenient and faster through optical fiber access.
Disclosure of Invention
The invention aims to: aiming at the problems in the prior art, the invention provides a self-adaptive blocking spare power automatic switching implementation method for a voltage-class, which mainly solves the problem that a plurality of spare power automatic switching devices are required to be configured in the existing transformer substation, designs the spare power automatic switching method for the voltage-class, and can realize more scientific, reasonable and correct actions of the self-adaptive blocking spare power automatic switching device according to different external protection action conditions, thereby improving the power supply reliability and safety of a power grid system, and has wider application prospect particularly for intelligent transformer substations.
The technical scheme is as follows: the invention provides a method for realizing self-adaptive blocking spare power automatic switching of a cross-voltage class, which comprises a spare power automatic switching body, wherein the spare power automatic switching body comprises a high-voltage side unit, a low-voltage side unit and an operation unit;
the high-voltage side unit on the spare power automatic switching body is provided with a high-voltage side switching value input module, a high-voltage side analog value input module and a high-voltage side switching value output module; the low-voltage side unit on the spare power automatic switching body is provided with a low-voltage side switching value input module, a low-voltage side analog value input module and a low-voltage side switching value output module;
eight spare power automatic switching modes are arranged in the operation unit, namely a mode one to a mode eight respectively, wherein the mode one to the mode four are the operation of the switching value and the analog value information of the high-voltage side; the fifth mode to the eighth mode are operations of low-voltage side switching value and analog quantity information;
the charging logic relation of the spare power automatic switching mode III is as follows: the method meets the condition of the spare power automatic switching mode three charging, and after the delay Tcd, the mode three charging is completed; the third mode is that the first mode is a main transformer differential protection mode, a non-electric quantity protection mode, a high backup protection mode or a door is immediately discharged after the door is operated;
the charging logic relation of the spare power automatic switching mode IV is as follows: the method meets the four charging conditions of the spare power automatic switching mode, and after the delay Tcd, the four charging modes are completed; the fourth mode is that the No. 2 main transformer differential protection, the non-electric quantity protection and the high backup protection act or gate are immediately discharged and locked;
the charging logic relation of the spare power automatic switching mode seven is as follows: the method meets the condition of the spare power automatic switching mode seven charging, and the mode seven charging is completed after the delay Tcd; the first main transformer is immediately discharged after the high backup protection and the low backup protection actions or gates, and the locking mode is seventh; in addition, when the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S2zd of the No. 2 main transformer, namely S1+S2> S2zd, the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer are immediately discharged, and a locking mode is seven;
the charging logic relation of the spare power automatic switching mode eight is as follows: the method meets the condition of eight charging modes of the spare power automatic switching, and the eight charging modes are completed after the delay Tcd; the main transformer No. 2 is immediately discharged after the high backup protection and the low backup protection act or gate, and the locking mode is eight; in addition, when the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S1zd of the No. 1 main transformer, namely S1+S2> S1zd, the electric discharge is immediately carried out, and the locking mode is eight.
Further, the sum of the current load S1 of the main transformer No. 1 and the current load S2 of the main transformer No. 2 is obtained by the operation of the operation unit, and there are two cases: firstly, the low-voltage side of the No. 1 main transformer has no branch, namely the operation is performed by S1+S2, secondly, the low-voltage side of the No. 1 main transformer has a branch, and then the current load Sn of other operating branches is calculated, namely the operation is performed by S1+S2+Sn; the setting value S1zd of the main transformer capacity of the No. 1 is the rated capacity of the main transformer of the No. 1; and the setting value S2zd of the capacity of the No. 2 main transformer is the rated capacity of the No. 2 main transformer.
Further, the high-voltage side switching value input module of the high-voltage side unit is connected with position information of the high-voltage side circuit breakers 1DL, 2DL and 3DL, the high-voltage side analog quantity input module is connected with current and voltage information of the high-voltage side I section, the high-voltage side II section, the line L1, the line L2, the line 1TA and the line 2TA, and the high-voltage side switching value output module outputs multiple paths of active contacts and passive contacts;
the low-voltage side switching value input module of the low-voltage side unit is connected with position information of the low-voltage side circuit breakers 4DL, 5DL and 6DL, the low-voltage side analog input module is connected with current and voltage information of a low-voltage side I section, a low-voltage side II section, a high-voltage side I section, a high-voltage side II section, 4TA and 5TA, and the low-voltage side switching value output module outputs multiple paths of active contacts and passive contacts.
Further, the first to fourth modes correspond to the primary wiring operation modes of the high voltage side, which are respectively:
the first operation mode is that the circuit breakers 1DL and 3DL are combined, the 2DL is divided, the first operation mode of the spare power automatic switching mode is that the 1DL is changed from the combined position to the divided position, the 2DL is changed from the divided position to the combined position, the second operation mode is that the circuit breakers 2DL and 3DL are combined, the 1DL is divided, the second operation mode of the spare power automatic switching mode is that the 2DL is changed from the combined position to the divided position, and the 1DL is changed from the divided position to the combined position; the operation modes corresponding to the third mode and the fourth mode are that the circuit breakers 1DL and 2DL are combined, the 3DL is divided into the positions, the three operation modes of the spare power automatic switching mode are that the 1DL is changed from the combined position to the divided position, the 3DL is changed from the divided position to the combined position, the four operation modes of the spare power automatic switching mode are that the 2DL is changed from the combined position to the divided position, and the 3DL is changed from the divided position to the combined position.
Further, the fifth to sixth modes correspond to the low-voltage side primary wiring operation modes, which are respectively:
the five corresponding operation modes of the mode five are the circuit breakers 4DL and 6DL, the 5DL is divided, the five operation modes of the spare power automatic switching mode are the circuit breakers 4DL and 6DL, the 5DL is changed from the divided position to the divided position, the six corresponding operation modes of the mode six are the circuit breakers 5DL and 6DL, the 4DL is divided, the six operation modes of the spare power automatic switching mode are the circuit breakers 5DL, the 4DL is changed from the divided position to the divided position, and the 4DL is changed from the divided position to the divided position; the operation modes corresponding to the mode seven and the mode eight are that the circuit breakers 4DL and 5DL are combined, the 6DL is divided, the standby automatic switching mode seven is that the 4DL is changed from the combined position to the divided position, the 6DL is changed from the divided position to the combined position, the standby automatic switching mode eight is that the 5DL is changed from the combined position to the divided position, and the 6DL is changed from the divided position to the combined position.
Further, the first mode to the eighth mode comprise tripping delay and closing delay, the tripping delay is Tn1, the closing delay is Tn2, wherein n=1, 2, 8.
Further, the delay of T51 in the logic relationship between the third and fifth modes is greater than the sum of the delays of T31 and T32, the delay of T71 in the logic relationship between the third and seventh modes is greater than the sum of the delays of T31 and T32, the delay of T61 in the logic relationship between the fourth and sixth modes is greater than the sum of the delays of T41 and T42, and the delay of T81 in the logic relationship between the fourth and eighth modes is greater than the sum of the delays of T41 and T42.
Further, the logic relationship of the spare power automatic switching mode one is: after the first automatic switching mode meets the action condition, the first automatic switching mode is output to 1TJ through T11 to trip 1DL, and the trip position of the first automatic switching mode and 1DL form an AND gate, and the second automatic switching mode is output to 2HJ through T12 to close 2DL, and the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked after the first automatic switching mode meets the action condition, so that the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked once the first automatic switching mode meets the action condition, and whether the first automatic switching mode is successful or not;
the logic relation of the spare power automatic switching mode II is as follows: after the second automatic switching mode meets the action condition, the second automatic switching mode is output to the 2TJ through the T21 to trip the 2DL, and the trip position of the 2DL forms an AND gate, and the second automatic switching mode is output to the 1HJ through the T22 to close the 1DL, and the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked after the second automatic switching mode meets the action condition, so that the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked once the second automatic switching mode meets the action condition, and whether the second automatic switching mode is successful or not is achieved.
Further, the logic relationship of the spare power automatic switching mode III is as follows: after the spare power automatic switching mode III meets the action condition, the spare power automatic switching mode III outputs to 1TJ through T31 to trip 1DL, the jump position of 1DL forms an AND gate through T32 outputs to 3HJ to switch on 3DL, the jump position of T32 outputs and 3DL forms the AND gate, the spare power automatic switching modes five, six, seven and eight are locked, and if the spare power automatic switching mode III does not act or does not act successfully, the spare power automatic switching mode five, six, seven and eight are not locked;
the logic relation of the spare power automatic switching mode IV is as follows: after the spare power automatic switching mode IV meets the action condition, the spare power automatic switching mode IV outputs to 2TJ through T41 to trip 2DL, on the other hand, the jump position of 2DL forms an AND gate, the jump position of 2DL outputs to 3HJ through T42 to enable 3DL to be switched on, the output of T42 and the 3DL form the AND gate, the spare power automatic switching modes V, S, V and V are locked, and if the spare power automatic switching mode IV does not act or does not act successfully, the modes V, V and V are not locked.
Further, the logic relationship of the spare power automatic switching mode five is: after the fifth automatic switching mode meets the action condition, the fifth automatic switching mode is output to 4TJ through T51 to trip 4DL, and the second automatic switching mode and the trip position of 4DL form an AND gate and are output to 5HJ through T52 to enable 5DL to be switched on;
the logic relation of the spare power automatic switching mode six is as follows: after the spare power automatic switching mode six meets the action condition, the spare power automatic switching mode six is output to 5TJ through T61 to trip 5DL, and the spare power automatic switching mode six and the trip position of 5DL form an AND gate, and the spare power automatic switching mode six and the trip position of 5DL are output to 4HJ through T62 to enable 4DL to be closed;
the logic relation of the spare power automatic switching mode seven is as follows: after the spare power automatic switching mode seven meets the action condition, the spare power automatic switching mode seven is output to 4TJ through T71 to trip 4DL, and the spare power automatic switching mode seven and the trip position of 4DL form an AND gate, and the spare power automatic switching mode seven and the trip position of 4DL are output to 6HJ through T72 to enable 6DL to be closed;
the logic relation of the backup automatic switching mode eight is as follows: after the spare power automatic switching mode eight meets the action condition, the spare power automatic switching mode eight is output to 5TJ through T81 to trip 5DL, and the spare power automatic switching mode eight and the trip position of 5DL form an AND gate and is output to 6HJ through T82 to enable 6DL to be closed.
The beneficial effects are that:
1. the invention integrates a plurality of spare power automatic switching devices with different voltage levels in a transformer substation into one device, so that on one hand, the input cost of power equipment is reduced, on the other hand, the wiring of the device is simplified, and the operation, maintenance and overhaul efficiency of the later device is improved. The invention can self-adaptively lock the spare power automatic switching device according to different external protection action conditions, and automatically lock the spare power automatic switching device under the condition of locking, otherwise, the spare power automatic switching device can not be locked, thereby realizing more scientific, reasonable and correct action of the spare power automatic switching device and improving the power supply reliability and safety of a power grid system.
2. The invention can be applied to a conventional transformer substation and an intelligent transformer substation, and when the invention is applied to the intelligent transformer substation, the application value and the application effect are more obvious.
Drawings
FIG. 1 is a schematic diagram of a primary connection of an access backup power automatic switching device according to the present invention;
FIG. 2 is a schematic diagram of a unit module of the automatic switching device;
FIG. 3 is a schematic block diagram of a first-mode eighth embodiment of the automatic switching device of the present invention;
fig. 4 is a logic block diagram of a partial latch of the automatic switching device.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
The invention relates to a method for realizing self-adaptive locking spare power automatic switching of a voltage class, which comprises a spare power automatic switching body, wherein a high-voltage side unit, a low-voltage side unit and an operation unit are arranged on the spare power automatic switching body;
the high-voltage side unit on the spare power automatic switching body is provided with a high-voltage side switching value input module, a high-voltage side analog value input module and a high-voltage side switching value output module;
the low-voltage side unit on the spare power automatic switching body is provided with a low-voltage side switching value input module, a low-voltage side analog value input module and a low-voltage side switching value output module;
the operation unit on the spare power automatic switching body carries out operation processing on the switching value information and analog value information of the high-voltage side switching value input module, the high-voltage side analog value input module, the low-voltage side switching value input module and the low-voltage side analog value input module, and outputs the switching value information and analog value information to the high-voltage side switching value output module and the low-voltage side switching value output module respectively;
the high-voltage side switching value input module of the high-voltage side unit is connected with position information of the high-voltage side circuit breakers 1DL, 2DL and 3DL, the high-voltage side analog input module is connected with current and voltage information of the high-voltage side I section, the high-voltage side II section, the line L1, the line L2, the line 1TA and the line 2TA, and the high-voltage side switching value output module outputs multiple paths of active contacts and passive contacts.
The low-voltage side switching value input module of the low-voltage side unit is connected with position information of the low-voltage side circuit breakers 4DL, 5DL and 6DL, the low-voltage side analog input module is connected with current and voltage information of a low-voltage side I section, a low-voltage side II section, a high-voltage side I section, a high-voltage side II section, 4TA and 5TA, and the low-voltage side switching value output module outputs multiple paths of active contacts and passive contacts.
The operation unit is designed with eight spare power automatic switching modes, namely a mode one to a mode eight, wherein the mode one to the mode four are the operation of the high-voltage side switching value and the analog quantity information, and the mode five to the mode eight are the operation of the low-voltage side switching value and the analog quantity information.
The first mode to the fourth mode of the operation unit correspond to four primary wiring operation modes of the high voltage side respectively, and the fifth mode to the eighth mode correspond to four primary wiring operation modes of the low voltage side respectively.
The first mode to the fourth mode of the operation unit correspond to four primary wiring operation modes of the high voltage side respectively, and the fifth mode to the eighth mode correspond to four primary wiring operation modes of the low voltage side respectively. The first operation mode is that the circuit breakers 1DL and 3DL are combined, the 2DL is divided, the first operation mode of the spare power automatic switching mode is that the 1DL is changed from the combined position to the divided position, the 2DL is changed from the divided position to the combined position, the second operation mode is that the circuit breakers 2DL and 3DL are combined, the 1DL is divided, the second operation mode of the spare power automatic switching mode is that the 2DL is changed from the combined position to the divided position, and the 1DL is changed from the divided position to the combined position; the operation modes corresponding to the third mode and the fourth mode are that the circuit breakers 1DL and 2DL are combined, the 3DL is divided, the three operation modes of the spare power automatic switching mode are that the 1DL is changed from the combined position to the divided position, the 3DL is changed from the divided position to the combined position, the four operation modes of the spare power automatic switching mode are that the 2DL is changed from the combined position to the divided position, and the 3DL is changed from the divided position to the combined position.
The five corresponding operation modes of the mode five are the circuit breakers 4DL and 6DL, the 5DL is divided, the five operation modes of the spare power automatic switching mode are the circuit breakers 4DL and 6DL, the 5DL is changed from the divided position to the divided position, the six corresponding operation modes of the mode six are the circuit breakers 5DL and 6DL, the 4DL is divided, the six operation modes of the spare power automatic switching mode are the circuit breakers 5DL, the 5DL is changed from the divided position to the divided position, and the 4DL is changed from the divided position to the divided position; the operation mode corresponding to the mode seven and the mode eight is that the circuit breakers 4DL and 5DL are combined, the 6DL is divided, the standby automatic switching mode seven is that the 4DL is changed from the combined position to the divided position, the 6DL is changed from the divided position to the combined position, the standby automatic switching mode eight is that the 5DL is changed from the combined position to the divided position, and the 6DL is changed from the divided position to the combined position.
The tripping delay and the closing delay are respectively Tn1 and Tn2, wherein n=1, 2, 8.
Referring to fig. 3, the invention discloses a logic relationship for the 8 spare power automatic switching modes, and the specific logic relationship is as follows:
the following is a logical relationship of the spare power automatic switching mode one:
the spare power automatic switching mode is output to 1TJ through T11 on one hand, 1DL trips, and the trip position of 1DL forms an AND gate, and is output to 2HJ through T12, so that 2DL is switched on, and the spare power automatic switching modes five, six, seven and eight are unlocked after the spare power automatic switching mode meets the action condition on the other hand, so that once the spare power automatic switching mode is met, the action condition is ensured, and the modes five, six, seven and eight are locked no matter whether the action of the spare power automatic switching mode is successful or not. The method comprises the following steps:
the first and seventh modes of automatic backup switching are exemplified: in the device, the first mode and the seventh mode are charged completely, the 1DL, the 3DL, the 4DL and the 5DL are combined, the 2DL and the 6DL are separated, when the line L1 breaks down, the spare power automatic switching device meets the action condition, the line breaker 1DL is tripped through the delay T11, and after the 1DL trip is taken, the breaker 2DL is closed through the delay T12. And immediately discharging the mode seven after the mode one action condition of the automatic backup switching mode is met, and locking the mode seven (in this case, if the mode one action is successful, the automatic backup switching mode seven is not needed, and if the mode one action is unsuccessful, all the high-voltage side is powered off, and the automatic backup switching mode seven is also not needed).
The following is the logic relationship of the spare power automatic switching mode II:
after the second automatic switching mode meets the action condition, the second automatic switching mode is output to the 2TJ through the T21 to trip the 2DL, the trip position of the 2DL forms an AND gate, the trip position of the 2DL is output to the 1HJ through the T22 to switch on the 1DL, and the fifth, sixth, seventh and eighth automatic switching modes are unlocked after the second automatic switching mode meets the action condition, so that the fifth, sixth, seventh and eighth automatic switching modes are locked once the second automatic switching mode is met, whether the second automatic switching mode is successful or not. The method comprises the following steps:
the second and eighth modes of automatic backup switching are exemplified: in the device, the two modes and the eight modes are charged completely, the 2DL, the 3DL, the 4DL and the 5DL are combined, the 1DL and the 6DL are separated, when the line L2 fails, the spare power automatic switching device meets the action condition, the line breaker 2DL is tripped through the delay T21, and after the 2DL trip is taken, the breaker 1DL is closed through the delay T22. Immediately discharging the mode eight and locking the mode eight after the second operation condition of the automatic backup switching mode is met (in this case, if the second operation is successful, the automatic backup switching mode eight is not needed, and if the second operation is unsuccessful, all the high-voltage side is powered off, and the automatic backup switching mode eight is also not needed).
The following is the logical relationship of the spare power automatic switching mode three:
after the spare power automatic switching mode III meets the action condition, the spare power automatic switching mode III is output to 1TJ through T31 to trip 1DL, the jump bit of 1DL and the jump bit of 1DL form an AND gate, the spare power automatic switching mode III is output to 3HJ through T32 to switch on 3DL, in addition, the T32 output and the 3DL combination bit form the AND gate, and the fifth, sixth, seventh and eighth modes of the automatic switching equipment are unlocked, so that the fifth, sixth, seventh and eighth modes of the automatic switching equipment are not operated after the third mode of the automatic switching equipment is operated, and the fifth, sixth, seventh and eighth modes of the automatic switching equipment are unlocked if the third mode of the automatic switching equipment is not operated or the operation is unsuccessful. The method comprises the following steps:
the operation examples of the third and seventh modes of the spare power automatic switching are as follows: in the device, the third mode and the seventh mode are charged, as can be seen from fig. 1 and 3, the positions of 1DL, 2DL, 4DL and 5DL are combined, the positions of 3DL and 6DL are divided, when the line L1 breaks down, the automatic switching device meets the action condition, the line breaker 1DL is tripped by the delay T31, the bridge breaker 3DL is closed by the delay T32 after the jump position of 1DL is taken, meanwhile, the seventh mode is discharged immediately after the position of 3DL is taken, and the seventh mode is closed (at the moment, the main transformer 1 resumes power supply through the 3DL without the automatic switching mode seven actions).
If the action fails in the action process of the spare power automatic switching mode III, if 3DL is not closed, the mode seven can still be operated, the circuit breaker 4DL is tripped through the delay T71, after the 4DL trip position is taken, the circuit breaker 6DL is closed through the delay T72, and the reliable power supply of the low-voltage side I-stage load is ensured. The delay of T71 in the logic relation between the spare power automatic switching mode III and the spare power automatic switching mode seven is larger than the sum of the delay of T31 and the delay of T32.
The following is a logical relationship of the spare power automatic switching mode IV:
after the fourth automatic switching mode meets the action condition, the fourth automatic switching mode is output to the 2TJ through the T41 to trip the 2DL, the jump position of the 2DL forms an AND gate to the 3HJ through the T42 to switch on the 3DL, the output of the T42 and the 3DL form an AND gate, the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are unlocked, the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are ensured to be not operated any more after the fourth automatic switching mode is operated, and the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are unlocked if the fourth automatic switching mode is not operated or is not successful.
The fourth and eighth modes of automatic backup switching are as examples: in the device, the mode four and the mode eight are charged, the mode 1DL, the mode 2DL, the mode 4DL and the mode 5DL are combined, the mode 3DL and the mode 6DL are separated, when a line L2 fails, the spare power automatic switching device meets the action condition, the line breaker 2DL is tripped through a delay T41, after the 2DL trip is taken, the bridge breaker 3DL is closed through a delay T42, meanwhile, the mode eight is immediately discharged after the mode 3DL is taken, and the mode eight is blocked (at the moment, the power supply of the No. 2 main transformer is recovered through the 3DL, and the spare power automatic switching mode eight action is not needed).
If the action fails in the action process of the spare power automatic switching mode IV, if 3DL is not closed, the mode eight can not be locked, the mode eight can still act, the circuit breaker 5DL is tripped through the time delay T81, after the 5DL trip position is taken, the circuit breaker 6DL is closed through the time delay T82, and the reliable power supply of the low-voltage side II section load is ensured. And the delay of T81 in the logic relation between the spare power automatic switching mode IV and the spare power automatic switching mode eight is larger than the sum of the delay of T41 and the delay of T42.
The following five logical relations of the spare power automatic switching mode are as follows:
after the fifth automatic switching mode meets the action condition, the fourth automatic switching mode is output to the 4TJ through the T51 to trip the 4DL under the condition that no locking signal exists, and the fifth automatic switching mode and the skip position of the 4DL form an AND gate, and the AND gate is output to the 5HJ through the T52 to enable the 5DL to be closed. At this time, the low-voltage side I, II section load is supplied by the No. 2 main transformer.
The following six logical relations of the spare power automatic switching mode are:
after the spare power automatic switching mode six meets the action condition, under the condition of no locking signal, the spare power automatic switching mode six outputs to 5TJ through T61 to trip 5DL, and on the other hand, the spare power automatic switching mode six and the trip position of 5DL form an AND gate, and outputs to 4HJ through T62 to enable 4DL to be closed. At this time, the low-voltage side I, II section load is supplied by the main transformer 1.
The following is a seven logic relationship of the spare power automatic switching mode:
after the spare power automatic switching mode seven meets the action condition, under the condition of no locking signal, the spare power automatic switching mode seven outputs to 4TJ through T71 to trip 4DL, and on the other hand, the spare power automatic switching mode seven and the skip bit of 4DL form an AND gate, and outputs to 6HJ through T72 to enable 6DL to be closed. At this time, the low-voltage side I, II section load is supplied by the No. 2 main transformer.
The following eight logic relations of the spare power automatic switching mode are as follows:
after the spare power automatic switching mode eight meets the action condition, the spare power automatic switching mode eight outputs to 5TJ through T81 on one hand to trip 5DL under the condition of no locking signal, and forms an AND gate with the trip position of 5DL on the other hand, and outputs to 6HJ through T82 to switch on 6 DL. At this time, the low-voltage side I, II section load is supplied by the main transformer 1.
For the above logic relationship, the delay of T51 in the logic relationship between the third and fifth modes is greater than the sum of the delays of T31 and T32, the delay of T71 in the logic relationship between the third and seventh modes is greater than the sum of the delays of T31 and T32, the delay of T61 in the logic relationship between the fourth and sixth modes is greater than the sum of the delays of T41 and T42, and the delay of T81 in the logic relationship between the fourth and eighth modes is greater than the sum of the delays of T41 and T42.
Aiming at the backup automatic switching logic relationship, the following is an implementation method of the self-adaptive locking backup automatic switching based on the backup automatic switching logic relationship:
referring to fig. 4, the charging logic relationship of the spare power automatic switching mode three is: and the third charging condition of the spare power automatic switching mode is met, and after the delay Tcd, the third charging is completed. And the third mode is that the first mode is to discharge immediately after the No. 1 main transformer differential protection, the non-electric quantity protection and the high backup protection act or gate. And the third locking mode of the main transformer differential protection, the non-electric quantity protection and the high backup protection action of the No. 1 is ensured, and the closing of the breaker 3DL is prevented from being caused to cause the closing to faults.
The charging logic relation of the spare power automatic switching mode IV is as follows: and the four charging conditions of the spare power automatic switching mode are met, and the four charging modes are completed after the delay Tcd. And the fourth mode is that after the No. 2 main transformer differential protection, the non-electric quantity protection and the high backup protection act or gate, the discharging is immediately carried out. And the fourth locking mode of the main transformer differential protection, the non-electric quantity protection and the high backup protection action of the No. 2 is ensured, and the closing of the breaker 3DL is prevented from being caused to cause the closing to faults.
The charging logic relationship of the spare power automatic switching mode seven is as follows: the method meets the condition of the spare power automatic switching mode seven charging, and the mode seven charging is completed after the delay Tcd. After the high-backup protection and low-backup protection actions or gates of the No. 1 main transformer, discharging immediately, and locking the mode seven, the mode seven is ensured to be locked when the high-backup protection and low-backup protection actions of the No. 1 main transformer are performed, and the circuit breaker 6DL is prevented from being closed, so that the closing is caused to faults. In addition, when the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S2zd of the No. 2 main transformer, namely S1+S2> S2zd is also immediately discharged, and the locking mode is seven, so that after the automatic backup switching mode is seven, the circuit breaker 6DL is closed, the overload of the No. 2 main transformer is caused, and the stable operation of the system is influenced.
The charging logic relation of the spare power automatic switching mode eight is as follows: the method meets the condition of eight charging modes of the spare power automatic switching, and the eight charging modes are completed after the delay Tcd. After the high-backup protection and low-backup protection actions or gates of the No. 2 main transformer, the discharging is immediately carried out, and the locking mode eight is carried out, so that the locking mode eight of the high-backup protection and low-backup protection actions of the No. 2 main transformer is ensured, and the closing of the breaker 6DL is prevented from being caused to be closed in faults. In addition, when the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S1zd of the No. 1 main transformer, namely S1+S2> S1zd, the electric discharge is also immediately carried out, the locking mode is eight, and after the automatic backup switching mode is eight, the circuit breaker 6DL is closed, so that overload of the No. 1 main transformer is caused, and the stable operation of the system is influenced.
The sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is obtained by the operation of an operation unit, and two conditions exist: firstly, the low-voltage side of the No. 1 main transformer has no branch, namely the operation is performed by S1+S2, secondly, the low-voltage side of the No. 1 main transformer has a branch, and then the current load Sn of other operating branches is calculated, namely the operation is performed by S1+S2+Sn; the value of the setting value S1zd of the main transformer capacity of the No. 1 is generally the rated capacity of the main transformer of the No. 1; the setting value S2zd of the main transformer capacity No. 2 generally takes the rated capacity of the main transformer No. 2. Thereby considering the possibility of various wiring modes on the low-voltage side of the main transformer.
The implementation of the invention mainly aims at the internal bridge connection of the primary wiring mode of the high-voltage side of the transformer substation, the single-bus-section wiring of the primary wiring mode of the low-voltage side, and the 1DL, 2DL, 4DL and 5DL combined positions and the 3DL and 6DL split positions are taken as examples, and the process of self-adaptive locking and misoperation prevention of the spare power automatic switching device after different protection actions of the 1 # and 2 # main transformers are described by combining with figures 1,2, 3 and 4.
1. After the third and seventh modes of the spare power automatic switching are charged, the self-adaptive locking condition is as follows:
1. when the high-voltage side I section bus loses power and the No. 1 main transformer does not have protection action, the three action conditions of the spare power automatic switching mode are met, the spare power automatic switching device trips the breaker 1DL through time delay, after 1DL trip is taken, the bridge breaker 3DL is closed through time delay, the three actions of the spare power automatic switching mode are successful, the No. 1 main transformer resumes operation, and the low-voltage side I section load is continuously supplied.
2. When the high-voltage side I-section bus loses power, one of the No. 1 main transformer differential protection and the non-electric quantity protection acts, the breakers 1DL, 3DL and 4DL are tripped, the No. 1 main transformer or the outgoing line thereof is indicated to be faulty, the spare power automatic switching mode III immediately discharges at the moment, the spare power automatic switching mode III is locked, and the bridge breaker 3DL is prevented from being closed, so that the high-voltage side is prevented from being closed to the fault. If no overload locking exists in the spare power automatic switching mode seven, the circuit breaker 4DL is tripped again through time delay, the sectional circuit breaker 6DL is closed through time delay after the 4DL trip position is taken, the spare power automatic switching mode seven is successful, and the No. 2 main transformer supplies power for the low-voltage side I, II section load.
3. When the high-voltage side I-section bus loses power and has the backup protection action of the high-voltage side I-section bus, the circuit breakers 1DL, 3DL and 4DL are tripped, the failure of the high-voltage side I-section bus or the failure of the low-voltage side bus or the failure of the high-voltage side I-section bus are described, the backup automatic switching mode III is immediately discharged, and the backup automatic switching mode III is locked to prevent the bridge circuit breaker 3DL from being closed, so that the high-voltage side is prevented from being closed to the failure; meanwhile, the standby automatic switching mode seven discharges immediately, and the standby automatic switching mode seven is locked, so that the sectional circuit breaker 6DL is prevented from being closed, and the low-voltage side is prevented from being closed to faults.
4. When the high-voltage side I-section bus loses power and the backup protection action of the No. 1 main transformer is provided, the circuit breaker 4DL is tripped, and the failure of the No. 1 main transformer low-voltage side I-section bus or the line outlet is explained, and the action condition of the backup automatic switching mode three is not met at the moment, so that the backup automatic switching mode three does not need to be locked; meanwhile, the standby automatic switching mode seven discharges immediately, and the standby automatic switching mode seven is locked, so that the sectional circuit breaker 6DL is prevented from being closed, and the low-voltage side is prevented from being closed to faults.
5. Under the normal running condition of the No. 1 main transformer and the No. 2 main transformer, if the operation result of the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S2zd of the No. 2 main transformer, namely S1+S2> S2zd, the standby automatic switching mode seven discharges immediately, and the locking mode seven prevents the overload of the No. 2 main transformer caused by closing the segmented circuit breaker 6 DL.
2. After the fourth and eighth modes of the spare power automatic switching are charged, the self-adaptive locking condition is as follows:
1. when the high-voltage side II section bus is out of power and the No. 2 main transformer does not have a protection action, the four action conditions of the spare power automatic switching mode are met, the spare power automatic switching device trips the circuit breaker 2DL through time delay, after 2DL tripping is achieved, the bridge circuit breaker 3DL is closed through time delay, the four actions of the spare power automatic switching mode are successful, the No. 2 main transformer resumes operation, and the low-voltage side II section load is continuously supplied.
2. When the high-voltage side II-section bus loses power, and one of the No. 2 main transformer differential protection and the non-electric quantity protection acts, the circuit breakers 2DL, 3DL and 5DL are tripped to indicate the failure of the No. 2 main transformer or the outgoing line thereof, the spare power automatic switching mode IV immediately discharges at the moment, the spare power automatic switching mode IV is locked, the bridge circuit breaker 3DL is prevented from being closed, and therefore the high-voltage side is prevented from being closed to the failure. If the spare power automatic switching mode eight does not have overload locking, the circuit breaker 5DL is tripped again through time delay, the sectional circuit breaker 6DL is closed through time delay after the 5DL trip position is taken, the spare power automatic switching mode eight is successful, and the No. 1 main transformer supplies power for the low-voltage side I, II section load.
3. When the high-voltage side II-stage bus loses power and has the backup protection action of the high-voltage side II-stage bus, the circuit breakers 2DL, 3DL and 5DL are tripped, the faults of the No. 2 main transformer or outgoing lines thereof or the faults of the low-voltage side bus or outgoing lines are described, the backup automatic switching mode IV immediately discharges, the backup automatic switching mode IV is locked, the bridge circuit breaker 3DL is prevented from being closed, and therefore the high-voltage side is prevented from being closed to the faults; meanwhile, the spare power automatic switching mode eight discharges immediately, and the spare power automatic switching mode eight is locked to prevent the sectionalized breaker 6DL from being closed, so that the low-voltage side is prevented from being closed to faults.
4. When the high-voltage side II section bus loses power and the backup protection action of the No. 2 main transformer is provided, the circuit breaker 5DL is tripped, and the fault of the No. 2 main transformer low-voltage side II section bus or the outlet line is explained, and the action condition of the backup automatic switching mode four is not met at the moment, so that the backup automatic switching mode four is not required to be locked; meanwhile, the spare power automatic switching mode eight discharges immediately, and the spare power automatic switching mode eight is locked to prevent the sectionalized breaker 6DL from being closed, so that the low-voltage side is prevented from being closed to faults.
5. Under the normal running condition of the No. 1 main transformer and the No. 2 main transformer, if the operation result of the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S1zd of the No. 1 main transformer, namely S1+S2> S1zd, the standby automatic switching mode eight discharges immediately, and the locking mode eight prevents the sectionalizing breaker 6DL from being closed to cause overload of the No. 1 main transformer.
3. After the spare power automatic switching is charged in other modes, the self-adaptive locking condition is referred to above.
The foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. The method for realizing the self-adaptive locking spare power automatic switching of the cross-voltage class comprises a spare power automatic switching body, and is characterized in that the spare power automatic switching body comprises a high-voltage side unit, a low-voltage side unit and an operation unit;
the high-voltage side unit on the spare power automatic switching body is provided with a high-voltage side switching value input module, a high-voltage side analog value input module and a high-voltage side switching value output module; the low-voltage side unit on the spare power automatic switching body is provided with a low-voltage side switching value input module, a low-voltage side analog value input module and a low-voltage side switching value output module;
the high-voltage side switching value input module of the high-voltage side unit is connected with position information of the high-voltage side circuit breakers 1DL, 2DL and 3DL, the high-voltage side analog input module is connected with current and voltage information of a high-voltage side I section, a high-voltage side II section, a line L1, a line L2, a line 1TA and a line 2TA, and the high-voltage side switching value output module outputs multiple paths of active contacts and passive contacts;
the low-voltage side switching value input module of the low-voltage side unit is connected with position information of the low-voltage side circuit breakers 4DL, 5DL and 6DL, the low-voltage side analog input module is connected with current and voltage information of a low-voltage side I section, a low-voltage side II section, a high-voltage side I section, a high-voltage side II section, 4TA and 5TA, and the low-voltage side switching value output module outputs multiple paths of active contacts and passive contacts;
eight spare power automatic switching modes are arranged in the operation unit, namely a mode one to a mode eight respectively, wherein the mode one to the mode four are the operation of the switching value and the analog value information of the high-voltage side; the fifth mode to the eighth mode are operations of low-voltage side switching value and analog quantity information;
the operation mode corresponding to the spare power automatic switching mode III and the spare power automatic switching mode IV is that the circuit breakers 1DL and 2DL are combined, the 3DL is divided into the positions, the operation mode of the spare power automatic switching mode III is that the 1DL is changed from the combined position to the divided position, the 3DL is changed from the divided position to the combined position, the operation mode of the spare power automatic switching mode IV is that the 2DL is changed from the combined position to the divided position, and the 3DL is changed from the divided position to the combined position;
the operation mode corresponding to the standby automatic switching mode seven and the standby automatic switching mode eight is that the circuit breakers 4DL and 5DL are combined, the 6DL is divided into the positions, the operation mode of the standby automatic switching mode seven is that the 4DL is changed from the combined position to the divided position, the 6DL is changed from the divided position to the combined position, the operation mode of the standby automatic switching mode eight is that the 5DL is changed from the combined position to the divided position, and the 6DL is changed from the divided position to the combined position;
the charging logic relation of the spare power automatic switching mode III is as follows: the method meets the condition of the spare power automatic switching mode three charging, and after the delay Tcd, the mode three charging is completed; the third mode is that the first mode is a main transformer differential protection mode, a non-electric quantity protection mode, a high backup protection mode or a door is immediately discharged after the door is operated;
the charging logic relation of the spare power automatic switching mode IV is as follows: the method meets the four charging conditions of the spare power automatic switching mode, and after the delay Tcd, the four charging modes are completed; the fourth mode is that the No. 2 main transformer differential protection, the non-electric quantity protection and the high backup protection act or gate are immediately discharged and locked;
the charging logic relation of the spare power automatic switching mode seven is as follows: the method meets the condition of the spare power automatic switching mode seven charging, and the mode seven charging is completed after the delay Tcd; the first main transformer is immediately discharged after the high backup protection and the low backup protection actions or gates, and the locking mode is seventh; in addition, when the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S2zd of the No. 2 main transformer, namely S1+S2> S2zd, the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer are immediately discharged, and a locking mode is seven;
the charging logic relation of the spare power automatic switching mode eight is as follows: the method meets the condition of eight charging modes of the spare power automatic switching, and the eight charging modes are completed after the delay Tcd; the main transformer No. 2 is immediately discharged after the high backup protection and the low backup protection act or gate, and the locking mode is eight; in addition, when the sum of the current load S1 of the No. 1 main transformer and the current load S2 of the No. 2 main transformer is larger than the capacity setting value S1zd of the No. 1 main transformer, namely S1+S2> S1zd, the electric discharge is immediately carried out, and the locking mode is eight.
2. The method for implementing the self-adaptive blocking spare power automatic switching across voltage levels according to claim 1, wherein the sum of the current load S1 of the main transformer No. 1 and the current load S2 of the main transformer No. 2 is obtained by operation of an operation unit, and the two conditions are: firstly, the low-voltage side of the No. 1 main transformer has no branch, namely the operation is performed by S1+S2, secondly, the low-voltage side of the No. 1 main transformer has a branch, and then the current load Sn of other operating branches is calculated, namely the operation is performed by S1+S2+Sn; the setting value S1zd of the main transformer capacity of the No. 1 is the rated capacity of the main transformer of the No. 1; and the setting value S2zd of the capacity of the No. 2 main transformer is the rated capacity of the No. 2 main transformer.
3. The method for implementing the self-adaptive blocking spare power automatic switching across voltage levels according to claim 1, wherein a first mode to a second mode correspond to a primary wiring operation mode of a high voltage side, and the method is as follows:
the first operation mode is that the circuit breakers 1DL and 3DL are combined, the 2DL is divided, the first operation mode of the spare power automatic switching mode is that the 1DL is changed from the combined position to the divided position, the 2DL is changed from the divided position to the combined position, the second operation mode is that the circuit breakers 2DL and 3DL are combined, the 1DL is divided, the second operation mode of the spare power automatic switching mode is that the 2DL is changed from the combined position to the divided position, and the 1DL is changed from the divided position to the combined position.
4. The method for implementing the self-adaptive blocking standby power automatic switching across voltage levels according to claim 1, wherein modes five to six correspond to low-voltage side primary wiring operation modes, and the modes are respectively as follows:
the five corresponding operation modes of the mode five are that the circuit breakers 4DL and 6DL are combined, the 5DL is divided, the five operation modes of the spare power automatic switching mode are that the 4DL is changed from the combined position to the divided position, the 5DL is changed from the divided position to the combined position, the six corresponding operation modes of the mode six are that the circuit breakers 5DL and 6DL are combined, the 4DL is divided position, the six operation modes of the spare power automatic switching mode are that the 5DL is changed from the combined position to the divided position, and the 4DL is changed from the divided position to the combined position.
5. The method for implementing the self-adaptive blocking standby power automatic switching across voltage levels according to claim 1, wherein the modes one to eight comprise tripping delay and closing delay, the tripping delay is Tn1, the closing delay is Tn2, and n=1, 2, and 8.
6. The method for implementing the self-adaptive blocking spare power automatic switching across voltage levels according to claim 5, wherein the delay of T51 in the logical relationship between the third spare power automatic switching mode and the fifth spare power automatic switching mode is greater than the sum of the delays of T31 and T32, the delay of T71 in the logical relationship between the third spare power automatic switching mode and the seventh spare power automatic switching mode is greater than the sum of the delays of T31 and T32, the delay of T61 in the logical relationship between the fourth spare power automatic switching mode and the sixth spare power automatic switching mode is greater than the sum of the delays of T41 and T42, and the delay of T81 in the logical relationship between the fourth spare power automatic switching mode and the eighth spare power automatic switching mode is greater than the sum of the delays of T41 and T42.
7. The method for implementing the self-adaptive blocking spare power automatic switching across voltage levels according to claim 5, wherein the first spare power automatic switching mode has a logic relationship as follows: after the first automatic switching mode meets the action condition, the first automatic switching mode is output to 1TJ through T11 to trip 1DL, and the trip position of the first automatic switching mode and 1DL form an AND gate, and the second automatic switching mode is output to 2HJ through T12 to close 2DL, and the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked after the first automatic switching mode meets the action condition, so that the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked once the first automatic switching mode meets the action condition, and whether the first automatic switching mode is successful or not;
the logic relation of the spare power automatic switching mode II is as follows: after the second automatic switching mode meets the action condition, the second automatic switching mode is output to the 2TJ through the T21 to trip the 2DL, and the trip position of the 2DL forms an AND gate, and the second automatic switching mode is output to the 1HJ through the T22 to close the 1DL, and the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked after the second automatic switching mode meets the action condition, so that the fifth automatic switching mode, the sixth automatic switching mode, the seventh automatic switching mode and the eighth automatic switching mode are locked once the second automatic switching mode meets the action condition, and whether the second automatic switching mode is successful or not is achieved.
8. The method for implementing the self-adaptive blocking spare power automatic switching across voltage levels according to claim 5, wherein the logical relationship of the spare power automatic switching mode III is as follows: after the spare power automatic switching mode III meets the action condition, the spare power automatic switching mode III outputs to 1TJ through T31 to trip 1DL, the jump position of 1DL forms an AND gate through T32 outputs to 3HJ to switch on 3DL, the jump position of T32 outputs and 3DL forms the AND gate, the spare power automatic switching modes five, six, seven and eight are locked, and if the spare power automatic switching mode III does not act or does not act successfully, the spare power automatic switching mode five, six, seven and eight are not locked;
the logic relation of the spare power automatic switching mode IV is as follows: after the spare power automatic switching mode IV meets the action condition, the spare power automatic switching mode IV outputs to 2TJ through T41 to trip 2DL, on the other hand, the jump position of 2DL forms an AND gate, the jump position of 2DL outputs to 3HJ through T42 to enable 3DL to be switched on, the output of T42 and the 3DL form the AND gate, the spare power automatic switching modes V, S, V and V are locked, and if the spare power automatic switching mode IV does not act or does not act successfully, the modes V, V and V are not locked.
9. The method for implementing the self-adaptive blocking spare power automatic switching across voltage levels according to any one of claims 5 to 8, wherein the logical relationship of the spare power automatic switching mode five is: after the fifth automatic switching mode meets the action condition, the fifth automatic switching mode is output to 4TJ through T51 to trip 4DL, and the second automatic switching mode and the trip position of 4DL form an AND gate and are output to 5HJ through T52 to enable 5DL to be switched on;
the logic relation of the spare power automatic switching mode six is as follows: after the spare power automatic switching mode six meets the action condition, the spare power automatic switching mode six is output to 5TJ through T61 to trip 5DL, and the spare power automatic switching mode six and the trip position of 5DL form an AND gate, and the spare power automatic switching mode six and the trip position of 5DL are output to 4HJ through T62 to enable 4DL to be closed;
the logic relation of the spare power automatic switching mode seven is as follows: after the spare power automatic switching mode seven meets the action condition, the spare power automatic switching mode seven is output to 4TJ through T71 to trip 4DL, and the spare power automatic switching mode seven and the trip position of 4DL form an AND gate, and the spare power automatic switching mode seven and the trip position of 4DL are output to 6HJ through T72 to enable 6DL to be closed;
the logic relation of the backup automatic switching mode eight is as follows: after the spare power automatic switching mode eight meets the action condition, the spare power automatic switching mode eight is output to 5TJ through T81 to trip 5DL, and the spare power automatic switching mode eight and the trip position of 5DL form an AND gate and is output to 6HJ through T82 to enable 6DL to be closed.
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