CN111553554A - Regional spare power automatic switching control system and operation risk management and control method thereof - Google Patents
Regional spare power automatic switching control system and operation risk management and control method thereof Download PDFInfo
- Publication number
- CN111553554A CN111553554A CN202010200562.6A CN202010200562A CN111553554A CN 111553554 A CN111553554 A CN 111553554A CN 202010200562 A CN202010200562 A CN 202010200562A CN 111553554 A CN111553554 A CN 111553554A
- Authority
- CN
- China
- Prior art keywords
- automatic switching
- spare power
- power automatic
- regional
- logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000009471 action Effects 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000012954 risk control Methods 0.000 claims description 6
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0635—Risk analysis of enterprise or organisation activities
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
-
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Human Resources & Organizations (AREA)
- Economics (AREA)
- Strategic Management (AREA)
- Theoretical Computer Science (AREA)
- General Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Entrepreneurship & Innovation (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Marketing (AREA)
- Tourism & Hospitality (AREA)
- Power Engineering (AREA)
- Operations Research (AREA)
- Evolutionary Computation (AREA)
- Development Economics (AREA)
- Game Theory and Decision Science (AREA)
- Artificial Intelligence (AREA)
- Quality & Reliability (AREA)
- Educational Administration (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a regional spare power automatic switching control system and an operation risk management and control method thereof.A main processor and a slave processor are arranged in a regional spare power automatic switching device for cooperative coordination processing, so that data can be acquired in time, and data acquisition and data analysis are divided into two processors for processing, so that the data processing speed is improved, the trip time of regional spare power automatic switching is further shortened, the regional spare power automatic switching can effectively isolate faults in time, the power failure range is shortened, the power restoration time is shortened, and the condition that the regional spare power automatic switching fails is avoided; the invention sets the priority for each spare power automatic switching device in the serial supply loop, when a certain device is in fault, a plurality of device spare power automatic switching actions can be caused, and not all the spare power automatic switching device actions are necessary.
Description
Technical Field
The invention relates to the technical field of regional spare power automatic switching, in particular to a regional spare power automatic switching control system and an operation risk management and control method thereof.
Background
With the development of society, the requirements of customers on power supply reliability increase day by day, and power supply enterprises need to improve the power supply reliability by continuously improving primary and secondary power transmission and transformation equipment. By taking a Yunnan power grid as an example, a multi-source transformer substation can ensure the power supply reliability through conventional spare power automatic switching, but in many power supply areas, more power supply modes such as a chain mode and a ring network exist, when the ring needs to be broken to operate so as to reduce short-circuit current or the ring network is not provided with all light difference protection, and setting and matching are difficult, breakpoints can be set in the operation mode, so that part of the transformer substations become transformer substations with single power supply, and the power supply reliability is further reduced. The existing means is to enhance the construction of a primary grid structure of a power grid by additionally arranging conventional spare power automatic switching, so that the problems of high investment, long construction period, low investment benefit and the like are inevitably caused. In view of the fact that the regional backup power automatic switching technology is mature day by day, in order to prevent a transformer substation from becoming a single-power transformer substation, the regional backup power automatic switching is additionally installed to become the best choice, and the regional backup power automatic switching is also an important guarantee and effective means for rapidly recovering power supply and improving power supply reliability after a power grid fails.
However, the working principle of the regional backup power automatic switching is different from that of the conventional backup power automatic switching, and new problems and new risks exist in the aspects of installation and debugging, setting calculation, operation maintenance and the like of the regional backup power automatic switching, or problems generated in the regional backup power automatic switching application process are solved by a conventional backup power automatic switching method, so that great potential safety hazards exist, and the backup power automatic switching is very easy to cause operation rejection and misoperation. Therefore, in order to solve the above problems, the invention provides a regional backup power automatic switching control system and an operation risk management and control method thereof, which effectively reduce the probability of the operation rejection and misoperation risk possibly caused by the backup power automatic switching, and ensure that the regional backup power automatic switching is stable and reliable in the operation, popularization and application processes of a power grid.
Disclosure of Invention
In view of this, the invention provides a regional spare power automatic switching control system and an operation risk management and control method thereof, which effectively reduce the probability of operation rejection and misoperation risks possibly caused by spare power automatic switching, and ensure that the regional spare power automatic switching is stable and reliable in the operation, popularization and application processes of a power grid.
The technical scheme of the invention is realized as follows: on one hand, the invention provides a regional spare power automatic switching control system which comprises a regional control master station, a plurality of regional control substations, a plurality of local acquisition control devices and a communication gateway, wherein each substation is provided with one regional control substation, and the regional control master station is arranged at any substation;
each substation area control substation acquires the current quantity and the voltage quantity through a local acquisition control device and sends the local station information of the area control main station to the area control main station through a communication gateway.
On the basis of the above technical solution, preferably, the regional control master station is provided with a regional spare power automatic switching device, the regional spare power automatic switching device includes a data processing unit, a switching value input unit, a switching value output unit and a direct current analog input/output unit, the data processing unit includes a low pass filter, a first a/D converter, a second a/D converter, a first processor and a second processor;
the external switching value signal is electrically connected with the data input end of the first processor through the switching value input unit, the external direct current analog quantity is electrically connected with the input end of the low-pass filter through the direct current analog quantity input-output unit, the output end of the low-pass filter is electrically connected with the analog quantity input end of the first A/D converter and the analog quantity input end of the second A/D converter respectively, the digital output end of the first A/D converter is electrically connected with the input end of the first processor, the digital output end of the second A/D converter is electrically connected with the input end of the second processor, and the communication end of the first processor is electrically connected with the communication end of the second processor.
On the other hand, the invention also provides an operation risk control method of the regional spare power automatic switching device, which comprises the following steps:
s1, according to the spare power automatic switching voltage fixed value, the non-voltage starting fixed value and the non-voltage closing fixed value of the wiring voltage setting area;
s2, setting the trip time of the regional spare power automatic switching logic, wherein the setting standard is as follows: the trip time of the local spare power automatic switching logic effectively avoids the trip time of the regional spare power automatic switching logic;
s3, setting post-closing position access, determining whether the regional spare power automatic switching device is accessed to KKJ or STJ, if the regional spare power automatic switching device is accessed to KKJ, setting the 'post-closing position access' of the spare power automatic switching fixed value to be 1, otherwise, setting the value to be 0; if the area spare power automatic switching device is accessed to the STJ, the area spare power automatic switching device is quitted;
s4, setting an outlet fixed value of the regional spare power automatic switching device;
s5, setting action priorities for each spare power automatic switching device in the cascade circuit according to a spare power automatic switching priority calculation formula;
and S6, when the series circuit fails in the area range, judging whether the area spare power automatic switching meets the spare power automatic switching condition, if so, determining the optimal spare power automatic switching on/off strategy of the spare power automatic switching according to the priority of each spare power automatic switching device in the preset series circuit, starting the spare power automatic switching device according to the area spare power automatic switching starting logic, and tripping the corresponding switch according to the area spare power automatic switching action logic.
On the basis of the above technical solution, preferably, the digital expression of the setting standard in S2 is:
Tn＝Tb+Δt；
in the formula, n is a positive integer, TnTrip time, T, for n local backup automatic switching logics, respectivelybThe trip time of the regional spare power automatic switching logic is shown, delta t is the matching level difference of the spare power automatic switching action time, and delta t is more than 1 s.
On the basis of the above technical solution, preferably, the spare power automatic switching priority calculation formula in S5 is as follows:
P＝K1P1+K2P2+K3P3；
wherein P is the priority of the spare power automatic switching, P1For exiting priority in place, P2For automatic control of priority, P3For load attribute priority, P1、P2And P3Are all integers, and P1＞P2＞P3；K1、K2And K3Respectively correspond to P1、P2And P3The value coefficient of (a);
wherein, K1、K2And K3The value law is as follows: k1Withdrawing 1, K in situ2And K3Taking 0; k2Automatic control of preparation 1, K1And K3Taking 0; k3Important user gets 1, K1And K2Take 0.
On the basis of the above technical solution, preferably, in S5, when the priorities of the plurality of backup automatic switching devices are the same, the backup automatic switching devices are exited according to the principle of the least exiting substation and the least exiting load.
On the basis of the above technical solution, preferably, the backup power automatic switching operation logic includes: charging logic, starting logic, action judging logic and returning logic;
the charging logic, the starting logic and the returning logic are the same as the conventional backup power automatic switching action logic, and the action judgment logic is as follows: when no external locking signal exists, the spare power automatic switching device is started and the spare power supply circuit has voltage, the small power supply is connected and tripped, the main power supply circuit is tripped at the same time, and the spare power supply circuit is switched on after the main power supply circuit is disconnected.
Compared with the prior art, the regional spare power automatic switching device and the operation risk control method thereof have the following beneficial effects:
(1) the main processor and the auxiliary processor are arranged in the regional automatic backup power switching device for cooperative coordination processing, so that data can be acquired in time, and data acquisition and data analysis are divided into the two processors for processing, so that the data processing speed is improved, the trip time of the regional automatic backup power switching is shortened, the regional automatic backup power switching can effectively isolate faults in time, the power failure range is reduced, the power restoration time is shortened, and the condition that the regional automatic backup power switching fails is avoided;
(2) the invention sets the priority for each spare power automatic switching device in the serial supply loop, when a certain device is in fault, a plurality of device spare power automatic switching actions can be caused, and not all the spare power automatic switching device actions are necessary.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a regional spare power automatic switching device according to the present invention;
fig. 2 is a schematic structural diagram of a regional spare power automatic switching control system according to the present invention;
fig. 3 is a schematic diagram of an actual application case of a regional automatic backup power switching control system according to the present invention;
fig. 4 is a flowchart of an operation risk control method for the regional backup automatic switching device according to the present invention;
fig. 5 is a logic diagram of the operation of the regional automatic backup power switching device according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
The present embodiment provides a regional spare power automatic switching device, as shown in fig. 1, which includes a data processing unit, a switching value input unit, a switching value output unit, and a dc analog input/output unit, wherein the data processing unit includes a low pass filter, a first a/D converter, a second a/D converter, a first processor, and a second processor; the external switching value signal passes through switching value input unit and first processor's data input end electric connection, and outside direct current analog quantity passes through direct current analog quantity input output unit and low pass filter's input electric connection, and low pass filter's output respectively with the analog quantity input of first AD converter and the analog quantity input electric connection of second AD converter, the digital output of first AD converter and the input electric connection of first processor, the digital output of second AD converter and the input electric connection of second processor, the communication end of first processor and the communication end electric connection of second processor.
In this embodiment, a master processor and a slave processor are provided, where the first processor is the master processor, the second processor is the slave processor, the second processor performs signal processing and operation on the input small voltage and current signals of the dc analog input/output unit, and sends the data to the first processor through the SPI serial port, and the first processor cooperates with the relay to realize the monitoring function of the switching value of the backup automatic switching device in the whole area, and performs fault identification and analysis according to the data processed by the second processor, so as to detect the fault occurring in each component in the power system. According to the embodiment, the main processor and the auxiliary processor are used for cooperative coordination processing, data can be collected in time, data collection and data analysis are divided into two processors for processing, the data processing speed is improved, the tripping time of the regional automatic bus transfer is shortened, the regional automatic bus transfer can timely and effectively isolate faults, the power failure range is reduced, the power restoration time is shortened, and the condition that the regional automatic bus transfer fails is avoided.
Example 2
As shown in fig. 2, the regional backup power automatic switching control system of the present invention includes a regional control master station, a plurality of regional control substations, a plurality of local collection control devices, and a communication gateway, where each substation is provided with a regional control substation device for collecting current and voltage, and sends information of the local control master station to the regional control master station through the communication gateway. The regional control master station receives information sent by each substation, collects and processes power grid operation information in a regional range, performs unified coordination control on load and power flow of the whole regional power grid according to a set control strategy, and completes the control function of the whole regional power grid by issuing a control command to the substations, wherein the regional control master station is provided with the regional spare power automatic switching device as in embodiment 1; the substation area control substation collects current and voltage quantities through local collection and control equipment to complete all control functions in the substation area range, interacts with the area control main station, sends local information required by the main station, and implements control commands on the equipment in the substation area range after receiving the control commands of the main station. And the substation area control substation is provided with a conventional spare power automatic switching device.
The regional backup power automatic switching device can acquire panoramic information of state quantities including current, voltage, switch positions, closed positions and the like of substations on two sides in real time to perform automatic identification and judgment, determines backup power automatic switching logic to adopt a local or regional mode according to setting conditions of a device protection fixed value, and then determines running conditions such as charging, discharging, locking and the like of matched open backup power automatic switching, so that in the backup power automatic switching region, any series supply line under the condition of no voltage can jump off a main power supply switch of a first no-voltage substation from a fault point to an open loop point, the open loop point hot standby switch in a looped network is closed, and the backup power supply point is started to recover power supply to the no-voltage substation.
As shown in fig. 3, the 110kVA station is powered by a mengxi line 142 switch, the tang-west line 141 switch is in hot standby, when the mengxi line needs to be powered off to go to overhaul and process defects, if the 110kVA station is scheduled to be powered by the mengxi line 142 switch and powered by the tang-west line 141 switch in a backup automatic switching and reversing power mode, if the backup automatic switching and reversing power is performed by remotely jumping the mengxi line 132 switch according to a conventional backup automatic switching and reversing power method, the backup automatic switching device of the 110kVA station is rejected. At this time, before the backup power switching of the 110kVA substation is carried out, the passage for locking the remote backup power switching of the regional backup power automatic switching transmission needs to be withdrawn, so that the backup power switching of the 110kVA substation can be ensured to be successful.
As described above, in the regional backup power supply, the oval inner switches (141, 112, 142, 132, 131) are used as the intra-domain switches in the regional backup power supply, and no matter whether any switch in the remote jump domain is used, the device will send a signal of locking the remote backup power supply to lock the backup power supply device in the opposite region, so that the channel of locking the remote backup power supply by the regional backup power supply needs to be withdrawn before the backup power supply reversing mode is adopted. The 139 and 182 switches outside the area are not limited by the method, the backup power automatic switching and the backup power can be carried out according to the conventional backup power automatic switching and the backup power reversing method, operation and maintenance personnel and dispatching operation mode personnel are warned in a field operation procedure, and the backup power automatic switching are avoided being unsuccessful.
Example 3
On the basis of embodiment 2, the present implementation provides an operation risk management and control method for an area backup automatic switching device according to embodiment 2. The method specifically comprises the following steps:
s1, according to the spare power automatic switching voltage fixed value, the non-voltage starting fixed value and the non-voltage closing fixed value of the wiring voltage setting area;
s2, setting the trip time of the regional spare power automatic switching logic, wherein the setting standard is as follows: the trip time of the local spare power automatic switching logic effectively avoids the trip time of the regional spare power automatic switching logic; namely: the digital expression of the setting standard is as follows:
Tn＝Tb+Δt；
in the formula, n is a positive integer, TnTrip time, T, for n local backup automatic switching logics, respectivelybThe trip time of the regional spare power automatic switching logic is shown, delta t is the matching level difference of the spare power automatic switching action time, and delta t is more than 1 s.
Taking the south rui relay protection regional backup switching device as an example, the first 4 backup switching modes are local backup switching logics, the local backup switching logic has a function of conventional backup automatic switching, and when a series supply loop fails in a regional range, a main power supply switch of the local station is tripped off, and a hot backup switch is switched on. However, the open-loop hot standby switch is required to meet the conditions only at the station, namely the station is an open-loop substation, the non-open-loop substation is in a discharge state due to the fact that the open-loop hot standby switch is not provided, local backup power automatic switching logic is unavailable, and the trip time setting principle is the same as that of the conventional backup power automatic switching trip time setting principle. The two last backup switching modes are regional backup switching logics, and have a regional backup switching function, namely, when any one fault occurs in a regional range, the real position of the fault can be judged, the main power supply switch of the first voltage-losing substation in the direction from the fault point to the open loop point is tripped, the switch of the hot standby of the open loop point in the regional range is closed, and the power supply to all the voltage-losing substations is recovered by the other power supply point. For the regional backup power supply, if the trip time of the regional backup power supply automatic switching logic is set improperly (if the time is the same as or longer than the trip time of the local backup power supply automatic switching), after the regional backup power supply action is successful, in order to recover power supply to the preceding-stage no-voltage transformer substation from the open loop point to the fault direction, the regional backup power supply automatic switching also needs to close the switch tripped by the local backup power supply automatic switching logic, so that the principle of reducing the power failure range and effectively isolating the fault is violated, the power supply recovery time is also prolonged, and the regional backup power supply automatic switching logic is complicated. Therefore, when the trip time of the regional spare power automatic switching logic is set, the trip time of the local spare power automatic switching logic is considered to effectively avoid the trip time of the regional spare power automatic switching logic.
S3, setting post-closing position access, determining whether the regional spare power automatic switching device is accessed to KKJ or STJ, if the regional spare power automatic switching device is accessed to KKJ, setting the 'post-closing position access' of the spare power automatic switching fixed value to be 1, otherwise, setting the value to be 0; if the area spare power automatic switching device is accessed to the STJ, the area spare power automatic switching device is quitted;
for example, a PCS-9651D type device discharges the backup power automatic switching device using the KKJ position on one side, and if the backup power automatic switching device discharges the backup power automatic switching device using the STJ on the other side, there is a risk of malfunction of the backup power automatic switching device in the area. Because the device sends a locking remote spare power switching signal when the KKJ deflection is changed from 1 to 0, if a certain side adopts STJ locking regional spare power automatic switching, the device does not send the locking remote spare power automatic switching signal in the power failure switching operation process, the regional spare power automatic switching is in misoperation, and at the moment, measures for preventing the regional spare power automatic switching device from misoperation, such as quitting the spare power automatic switching device, need to be taken on the opposite side.
S4, setting an outlet fixed value of the regional spare power automatic switching device;
s5, setting action priorities for each spare power automatic switching device in the cascade circuit according to a spare power automatic switching priority calculation formula;
the spare power automatic switching priority calculation formula is as follows:
P＝K1P1+K2P2+K3P3；
wherein P is the priority of the spare power automatic switching, P1For exiting priority in place, P2For automatic control of priority, P3For load attribute priority, P1、P2And P3Are all integers, and P1＞P2＞P3；K1、K2And K3Respectively correspond to P1、P2And P3The value coefficient of (a);
wherein, K1、K2And K3The value law is as follows: k1Withdrawing 1, K in situ2And K3Taking 0; k2Automatic control of preparation 1, K1And K3Taking 0; k3Important user gets 1, K1And K2Take 0.
And when a plurality of spare power automatic switching devices cause equipment overload, the spare power automatic switching devices with high levels are preferentially exited. The priority of this embodiment is set as: the spare power automatic switching of the 'local quit' class quits first, the 'automatic control' class is inferior, and the spare power automatic switching of the 'important user' class quits last. In this embodiment, the priority of each backup power automatic switching device in the cascade circuit is calculated by using a backup power automatic switching priority calculation formula, and when the priorities of a plurality of backup power automatic switching devices are the same, the priority is calculated according to the following steps: and exiting the transformer substation with the minimum exiting load.
And S6, when the serial supply loop fails in the area range, judging whether the spare power automatic switching meets the spare power automatic switching condition, if so, determining the optimal spare power automatic switching on/off strategy of the spare power automatic switching according to the priority of each spare power automatic switching device in the preset serial supply loop, starting the spare power automatic switching device according to the spare power automatic switching start logic, and tripping the corresponding switch according to the spare power automatic switching action logic.
The charging logic, the starting logic and the returning logic in the backup power automatic switching action logic are all the same as the conventional backup power automatic switching starting logic, and are not redundant, the action judgment logic in the embodiment is mainly set for some special situations, for example, a small power supply exists in a part of substations in a serial supply loop, and at the moment, the backup power automatic switching device is connected with the small power supply in the tripping process, and the small power supply is tripped. And after the starting logic of the spare power automatic switching device is finished, entering an action judgment logic part. The action execution of the automatic backup power switching device is a distributed and linked action logic, not a simple tripping or closing of a related switch, and each step of the distributed and linked action is critical, and when any step is in a problem, the action execution of the automatic backup power switching device is in misoperation or rejection, which is the biggest difference between the automatic backup power switching device and other safety automatic devices such as relay protection. The common backup automatic switching device executes actions including three aspects: voltage recovery, power supply switch-on and active power supply switch-off. The specific action logic is shown in fig. 5, and specifically includes: when no external locking signal exists, the spare power automatic switching device is started and the spare power supply circuit has voltage, the small power supply is connected and tripped, the main power supply circuit is tripped at the same time, and the spare power supply circuit is switched on after the main power supply circuit is disconnected.
In this embodiment, the priority is set for each backup power automatic switching device in the cascade circuit, when a certain device fails, multiple backup power automatic switching operations of the device may be caused, and not all the backup power automatic switching device operations are necessary.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a regional spare power automatic switching control system, its includes a regional control main website, a plurality of control substation of station territory, a plurality of collection controlling means and communication gateway on the spot which characterized in that: each substation is provided with one substation area control substation, and the area control master station is arranged at any substation;
and each station domain control substation acquires the current quantity and the voltage quantity through a local acquisition control device and sends the information of the station to the regional control main station through a communication gateway.
2. The regional backup power automatic switching control system according to claim 1, wherein: the regional control master station is provided with a regional spare power automatic switching device, and the regional spare power automatic switching device comprises a data processing unit, a switching value input unit, a switching value output unit and a direct current analog input/output unit;
the data processing unit comprises a low-pass filter, a first A/D converter, a second A/D converter, a first processor and a second processor;
the external switching value signal passes through switching value input unit and first processor's data input end electric connection, and outside direct current analog quantity passes through direct current analog quantity input output unit and low pass filter's input electric connection, and low pass filter's output respectively with the analog quantity input of first AD converter and the analog quantity input electric connection of second AD converter, the digital output of first AD converter and the input electric connection of first processor, the digital output of second AD converter and the input electric connection of second processor, the communication end of first processor and the communication end electric connection of second processor.
3. An operation risk management and control method for an area spare power automatic switching device is characterized by comprising the following steps: the method comprises the following steps:
s1, according to the spare power automatic switching voltage fixed value, the non-voltage starting fixed value and the non-voltage closing fixed value of the wiring voltage setting area;
s2, setting the trip time of the regional spare power automatic switching logic, wherein the setting standard is as follows: the trip time of the local spare power automatic switching logic effectively avoids the trip time of the regional spare power automatic switching logic;
s3, setting post-closing position access, determining whether the regional spare power automatic switching device is accessed to KKJ or STJ, if the regional spare power automatic switching device is accessed to KKJ, setting the 'post-closing position access' of the spare power automatic switching fixed value to be 1, otherwise, setting the value to be 0; if the area spare power automatic switching device is accessed to the STJ, the area spare power automatic switching device is quitted;
s4, setting an outlet fixed value of the regional spare power automatic switching device;
s5, setting action priorities for each spare power automatic switching device in the cascade circuit according to a spare power automatic switching priority calculation formula;
and S6, when the series circuit fails in the area range, judging whether the area spare power automatic switching meets the spare power automatic switching condition, if so, determining the optimal spare power automatic switching on/off strategy of the spare power automatic switching according to the priority of each spare power automatic switching device in the preset series circuit, starting the spare power automatic switching device according to the area spare power automatic switching starting logic, and tripping the corresponding switch according to the area spare power automatic switching action logic.
4. The operation risk control method of the regional automatic backup power switching device according to claim 3, wherein: the digital expression of the setting standard in S2 is:
Tn＝Tb+Δt；
in the formula, n is a positive integer, TnTrip time, T, for n local backup automatic switching logics, respectivelybThe trip time of the regional spare power automatic switching logic is shown, delta t is the matching level difference of the spare power automatic switching action time, and delta t is more than 1 s.
5. The operation risk control method of the regional automatic backup power switching device according to claim 3, wherein: the calculation formula of the spare power automatic switching priority in the S5 is as follows:
P＝K1P1+K2P2+K3P3；
wherein P is the priority of the spare power automatic switching, P1For exiting priority in place, P2For automatic control of priority, P3For load attribute priority, P1、P2And P3Are all integers, and P1＞P2＞P3；K1、K2And K3Respectively correspond to P1、P2And P3The value coefficient of (a);
wherein, K1、K2And K3The value law is as follows: k1Withdrawing 1, K in situ2And K3Taking 0; k2Automatic control of preparation 1, K1And K3Taking 0; k3Important user gets 1, K1And K2Take 0.
6. The method for managing and controlling operational risk of the regional automatic backup power switching device according to claim 5, wherein: and in the step S5, when the priorities of the plurality of backup automatic switching devices are the same, the backup automatic switching devices are withdrawn according to the principle of the least withdrawal of the substation and the least withdrawal load.
7. The operation risk control method of the regional automatic backup power switching device according to claim 3, wherein: the spare power automatic switching action logic comprises: charging logic, starting logic, action judging logic and returning logic;
the charging logic, the starting logic and the returning logic are the same as the conventional spare power automatic switching action logic, and the action judgment logic is as follows: when no external locking signal exists, the spare power automatic switching device is started and the spare power supply circuit has voltage, the small power supply is connected and tripped, the main power supply circuit is tripped at the same time, and the spare power supply circuit is switched on after the main power supply circuit is disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200562.6A CN111553554A (en) | 2020-03-20 | 2020-03-20 | Regional spare power automatic switching control system and operation risk management and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200562.6A CN111553554A (en) | 2020-03-20 | 2020-03-20 | Regional spare power automatic switching control system and operation risk management and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111553554A true CN111553554A (en) | 2020-08-18 |
Family
ID=72000076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010200562.6A Pending CN111553554A (en) | 2020-03-20 | 2020-03-20 | Regional spare power automatic switching control system and operation risk management and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111553554A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113344364A (en) * | 2021-05-31 | 2021-09-03 | 广东电网有限责任公司佛山供电局 | Power failure plan risk analysis method and device, electronic equipment and storage medium |
| CN113702736A (en) * | 2021-08-24 | 2021-11-26 | 深圳供电局有限公司 | Method, device and system for scheduled inspection of spare power automatic switching device and computer equipment |
| CN114583822A (en) * | 2022-03-18 | 2022-06-03 | 国网伊犁伊河供电有限责任公司 | Overload tripping method and device for automatic bus transfer device combined with power supply risk of power grid |
| CN118589500A (en) * | 2024-08-06 | 2024-09-03 | 国网山东省电力公司日照供电公司 | Power distribution network spare power automatic switching operation management platform based on model data analysis |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515169A (en) * | 2014-09-26 | 2016-04-20 | 南京南瑞继保电气有限公司 | Multilevel spare power automatic switching system, priority cooperation method, and construction method |
| US20160124047A1 (en) * | 2013-05-22 | 2016-05-05 | Chang Zhou Current Supply Company Of Jiangsu Electric Power Company | Intelligent calibration system for backup-power automatic switching device |
| CN105610236A (en) * | 2016-01-14 | 2016-05-25 | 江苏金智科技股份有限公司 | Method for automatic switching of emergency power supply of series network |
| CN107370235A (en) * | 2017-07-07 | 2017-11-21 | 国电南瑞科技股份有限公司 | Based on the adaptive region spare power automatic switching system and method under composite power supply pattern |
-
2020
- 2020-03-20 CN CN202010200562.6A patent/CN111553554A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160124047A1 (en) * | 2013-05-22 | 2016-05-05 | Chang Zhou Current Supply Company Of Jiangsu Electric Power Company | Intelligent calibration system for backup-power automatic switching device |
| CN105515169A (en) * | 2014-09-26 | 2016-04-20 | 南京南瑞继保电气有限公司 | Multilevel spare power automatic switching system, priority cooperation method, and construction method |
| CN105610236A (en) * | 2016-01-14 | 2016-05-25 | 江苏金智科技股份有限公司 | Method for automatic switching of emergency power supply of series network |
| CN107370235A (en) * | 2017-07-07 | 2017-11-21 | 国电南瑞科技股份有限公司 | Based on the adaptive region spare power automatic switching system and method under composite power supply pattern |
Non-Patent Citations (4)
| Title |
|---|
| 冯宝成等: ""区域备自投逻辑控制策略优化研究"", 《电工电气》 * |
| 孙海燕等: ""备用电源自动投入装置在实际应用中的几点问题"", 《中国期刊博览》 * |
| 李俊格等: ""备自投投退策略在线分析与实时闭环控制系统"", 《电力系统自动化》 * |
| 金震等: ""基于实时信息的区域备自投研究与实现"", 《中国电力》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113344364A (en) * | 2021-05-31 | 2021-09-03 | 广东电网有限责任公司佛山供电局 | Power failure plan risk analysis method and device, electronic equipment and storage medium |
| CN113344364B (en) * | 2021-05-31 | 2022-12-23 | 广东电网有限责任公司佛山供电局 | Power failure plan risk analysis method and device, electronic equipment and storage medium |
| CN113702736A (en) * | 2021-08-24 | 2021-11-26 | 深圳供电局有限公司 | Method, device and system for scheduled inspection of spare power automatic switching device and computer equipment |
| CN113702736B (en) * | 2021-08-24 | 2023-03-03 | 深圳供电局有限公司 | Method, device and system for scheduled inspection of spare power automatic switching device and computer equipment |
| CN114583822A (en) * | 2022-03-18 | 2022-06-03 | 国网伊犁伊河供电有限责任公司 | Overload tripping method and device for automatic bus transfer device combined with power supply risk of power grid |
| CN114583822B (en) * | 2022-03-18 | 2024-08-20 | 国网伊犁伊河供电有限责任公司 | Overload tripping method and device for spare power automatic switching device combined with power grid power supply risk |
| CN118589500A (en) * | 2024-08-06 | 2024-09-03 | 国网山东省电力公司日照供电公司 | Power distribution network spare power automatic switching operation management platform based on model data analysis |
| CN118589500B (en) * | 2024-08-06 | 2024-10-08 | 国网山东省电力公司日照供电公司 | Power distribution network spare power automatic switching operation management platform based on model data analysis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111553554A (en) | Regional spare power automatic switching control system and operation risk management and control method thereof | |
| CN108051706B (en) | Fault identification method and system for automatic standby power supply switching device | |
| CN103022994B (en) | Method for achieving fault isolation and recovery of power distribution network with permeability distribution type power supply | |
| CN107611945B (en) | Equipment state sensing type 110kV line protection system and implementation method | |
| CN113241844B (en) | 10kV bus sectional spare power automatic switching method and device | |
| CN111049112B (en) | Automatic fault isolation and self-healing control system and method for 10kV looped network distribution line | |
| CN102075005A (en) | Processing method for 110KV zone automatic standby power switching action on basis of EMS (Engine Management System) system | |
| CN203368127U (en) | Spare power automatic switching control equipment for transformer substation network | |
| CN105006881A (en) | Automatic put and automatic recovery control system | |
| CN104319743B (en) | The method and apparatus of the main transformer high-pressure side Fast Operating Backup Protection based on station domain information | |
| CN201623529U (en) | Automatic switching wide-area control system for wide-area backup power supply of power system | |
| CN112467721A (en) | Three-power-supply power supply system control device | |
| CN204886396U (en) | Haul oneself willingly into runback control system | |
| CN204271745U (en) | Automatic switching device of standby power supply system | |
| CN116316608A (en) | Main and distribution network cooperative self-healing power recovery system | |
| CN211744023U (en) | Self-healing system for avoiding station power failure risk by utilizing mutual feeder rule | |
| CN202798121U (en) | Intelligent substation domain backup automatic switch system based on station level microsoft media server protocol (MMS) | |
| CN203707759U (en) | TV parallel circuit preventing reverse charging | |
| CN201854085U (en) | Bus coupler segmented monitoring protection and comprehensive self-automatic input device | |
| CN112332402A (en) | Dual-power measurement and control device | |
| CN211880167U (en) | Spare power automatic switching system applied to high-speed electrified railway | |
| CN112182816A (en) | Method for preventing misoperation in online mode in accident voltage loss region of 35 kV-110 kV power grid | |
| CN215733468U (en) | Spare power automatic switching device with segmented post-acceleration protection function | |
| CN110943535A (en) | Power supply control system | |
| CN205178631U (en) | Two -way standby system of junctor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200818 |