CN107870595B - Intelligent processing device for low-voltage power distribution system based on IEC61850 - Google Patents
Intelligent processing device for low-voltage power distribution system based on IEC61850 Download PDFInfo
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- CN107870595B CN107870595B CN201711335675.1A CN201711335675A CN107870595B CN 107870595 B CN107870595 B CN 107870595B CN 201711335675 A CN201711335675 A CN 201711335675A CN 107870595 B CN107870595 B CN 107870595B
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- 238000012545 processing Methods 0.000 title claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000003993 interaction Effects 0.000 claims description 11
- 230000011664 signaling Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
- G01R19/2509—Details concerning sampling, digitizing or waveform capturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/006—Measuring power factor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
- G01R21/1331—Measuring real or reactive component, measuring apparent energy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25171—Serial, RS232
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25174—Ethernet
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25252—Microprocessor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The disclosure relates to the technical field of low-voltage power distribution, and provides an intelligent processing device for a low-voltage power distribution system based on IEC 61850. The intelligent processing device comprises a processor, a switching value input module, a switching value output module, an alternating current parameter acquisition module and an analog value input module; the switching value input module is electrically connected with the processor and used for acquiring a first switching value signal; the switching value output module is electrically connected with the processor and used for outputting a second switching value signal; the alternating current parameter acquisition module is electrically connected with the processor and used for acquiring current and voltage signals; the analog input module is electrically connected with the processor and used for collecting analog signals of the sensor; the processor receives the current and voltage signals, the first switching value signal and the analog value signal of the sensor to finish electric energy metering, power factor calculation and out-of-limit monitoring alarm. The intelligent processing device can be used for realizing interconnection and intercommunication of all low-voltage power distribution units.
Description
Technical Field
The disclosure relates to the technical field of low-voltage power distribution, in particular to an intelligent processing device for a low-voltage power distribution system based on IEC 61850.
Background
The IEC61850 standard is the only global universal standard in the field of power system automation. The method realizes engineering operation standardization of the intelligent substation. The engineering implementation of the intelligent substation becomes standard, unified and transparent. The intelligent substation engineering established by any system integrator can know the structure and layout of the whole substation through the SCD (system configuration) file, and has an irreplaceable effect on the development of the intelligent substation.
In the field of low-voltage power distribution, aiming at a power distribution link, an information method adopts a device based on an industrial field bus technology at present. Such as a multifunctional meter for collecting electric quantity information, various I/O modules for collecting state quantity and a multifunctional terminal device integrating electric quantity collection and state quantity collection. The field buses of the gauges and devices are various, so that different devices are difficult to interconnect and communicate. Furthermore, the power transformation and distribution system of the whole factory has been well applied to the high-voltage power transformation part IEC61850, but has not been applied to the low-voltage power distribution, and unnecessary trouble is caused in management.
Therefore, there is a need to develop an IEC 61850-based intelligent processing device for low voltage power distribution systems.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
It is an object of the present disclosure to provide an IEC 61850-based intelligent processing device for low voltage power distribution systems, which in turn overcomes, at least to some extent, one or more of the problems due to the limitations and disadvantages of the related art.
According to one aspect of the present disclosure, there is provided an IEC 61850-based intelligent processing device for a low voltage power distribution system, comprising:
A processor;
the switching value input module is electrically connected with the processor and used for acquiring a first switching value signal;
the switching value output module is electrically connected with the processor and used for outputting a second switching value signal;
The alternating current parameter acquisition module is electrically connected with the processor and used for acquiring current and voltage signals;
The analog quantity input module is electrically connected with the processor and used for collecting analog quantity signals of the sensor;
The processor receives the current and voltage signals, the first switching value signal and the analog value signal of the sensor to finish electric energy metering, power factor calculation and out-of-limit monitoring alarm.
In an exemplary embodiment of the disclosure, the intelligent processing device further includes:
And the man-machine interaction module is electrically connected with the processor and is used for carrying out man-machine interaction.
In an exemplary embodiment of the present disclosure, the human-machine interaction module includes one or more of a display screen, a keyboard, and a touch screen.
In an exemplary embodiment of the disclosure, the intelligent processing device further includes:
and the power module is electrically connected with the processor and used for providing power.
In an exemplary embodiment of the present disclosure, the processor includes:
The Ethernet interface is used for being connected with an external low-voltage intelligent power distribution management system;
And the RS232 interface is used for being connected with an external program updating device and a debugging device.
In one exemplary embodiment of the present disclosure, the processor is an embedded microprocessor.
In one exemplary embodiment of the present disclosure, the first switching value signal includes: remote signaling reflecting the operating status of the circuit breaker.
In one exemplary embodiment of the present disclosure, the second switching value signal includes: and a passive contact signal for controlling the opening and closing of the circuit breaker.
In one exemplary embodiment of the present disclosure, the analog signal of the sensor includes: temperature signal of temperature sensor.
In an exemplary embodiment of the disclosure, the processor is connected to the switching value input module, the switching value output module, the analog value input module, and the ac parameter acquisition module in a plugging manner.
The utility model discloses an intelligent processing device for low voltage distribution system based on IEC61850, which comprises a processor, switching value input module, switching value output module, alternating current parameter acquisition module and analog input module all connect in the treater, switching value input module is used for gathering first switching value signal, alternating current parameter acquisition module is used for gathering current and voltage signal, analog input module is used for gathering the analog signal of sensor, the treater receives current and voltage signal, first switching value signal and the analog signal of sensor are used for accomplishing electric energy measurement, power factor calculates, the monitoring warning of crossing limit. On the one hand, by adopting the intelligent processing device, IEC61850 protocol is uniformly adopted, so that various on-site buses are avoided, and interconnection and intercommunication among low-voltage power distribution units can be realized. On the other hand, the intelligent processing device can effectively fuse the power transformation and distribution information of the whole factory based on IEC61850, and is convenient to manage.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 schematically shows a block diagram of the architecture of an IEC61850 based intelligent processing device for low voltage power distribution systems.
In the figure:
1. A processor;
2. A switching value input module;
3. The switching value output module;
4. an alternating current parameter acquisition module;
5. An analog input module;
6.a man-machine interaction module;
7. a power module;
8. a low-voltage intelligent power distribution management system.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the aspects of the disclosure may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
In this exemplary embodiment, first, an IEC 61850-based intelligent processing apparatus for a low voltage power distribution system is provided, and referring to the block diagram of the IEC 61850-based intelligent processing apparatus for a low voltage power distribution system shown in fig. 1, the IEC 61850-based intelligent processing apparatus for a low voltage power distribution system may include a processor 1, a switching value input module 2, a switching value output module 3, an ac power parameter acquisition module 4, an analog value input module 5, and the like; the switching value input module 2 is electrically connected to the processor 1 and is used for acquiring a first switching value signal; the switching value output module 3 is electrically connected to the processor 1 and is used for outputting a second switching value signal; the alternating current parameter acquisition module 4 is electrically connected to the processor 1 and is used for acquiring current and voltage signals; the analog input module 5 is electrically connected to the processor 1 and is used for collecting analog signals of the sensor; the processor 1 receives the current and voltage signals, the first switching value signal and the analog value signal of the sensor to finish electric energy metering, power factor calculation and out-of-limit monitoring alarm.
Next, an IEC 61850-based intelligent processing apparatus for a low voltage power distribution system in the present exemplary embodiment will be further described.
The switching value input module 2 is electrically connected to the processor 1 and can be used for acquiring a first switching value signal. The switching value input module 2 is a device capable of collecting and inputting switching value signals, and is also commonly called a digital value I/O module. The switching value signal can be acquired to the processor 1. In this example embodiment, the first switching value signal may include a remote signaling reflecting an operating state of the circuit breaker. The switching value input module 2 is provided with a plurality of interfaces, part of the interfaces are connected with the circuit breaker, and the other interfaces are in a standby state. The switching value input module 2 may collect a state in which the circuit breaker is located, which may include: circuit breaker closing, circuit breaker tripping, circuit breaker stored energy, circuit breaker fault tripping, and the like.
The switching value output module 3 is electrically connected to the processor 1 and can be used for outputting a second switching value signal. The switching value output module 3 is a device capable of controlling output of a switching value signal, and is also commonly referred to as a digital value I/O module. The related state of the switch can be controlled by the switch quantity signal sent by the computer through the module, and the related state of the switch can be controlled remotely. In this example embodiment, the second switching value signal may include a passive contact signal that controls opening and closing of the circuit breaker, and opening and closing of the circuit breaker may be controlled according to the passive contact signal. The switching value output module 3 has a plurality of interfaces, part of which is connected with the circuit breaker, and part of which is empty to be in a standby state. The switching value output module 3 may output a control signal to control the state of the circuit breaker, which may include: circuit breaker closing, circuit breaker tripping, and the like.
In addition, it will be understood by those skilled in the art that the switching value input/output module 2 and the switching value output module 3 may be replaced with switching value input/output modules. The switching value input/output module is equipment capable of collecting, inputting and controlling output of switching value signals.
The ac parameter collection module 4 is electrically connected to the processor 1, and may be used for collecting current and voltage signals. The alternating current parameter acquisition module 4 can comprise an alternating current transmitter, a direct current 20mA acquisition module and the like, and can convert alternating current signals into 4-20mA direct current through the alternating current transmitter, acquire the direct current signals through the direct current 20mA acquisition module and convert the data into alternating current signal values. Of course, it will be understood by those skilled in the art that the ac parameter acquisition module 4 may also be an ac voltage and current acquisition module. In the present exemplary embodiment, the ac parameter collection module 4 is an ac voltage and current collection module, and the ac voltage and current collection module may directly collect current and voltage signals. The current signal may be a line loop current and the voltage signal may be a line bus voltage.
The analog input module 5 is electrically connected to the processor 1 and can be used for collecting analog signals of the sensor. The analog input module 5 is a device for collecting analog signals of a remote site to a computer. The analog quantity is an arbitrary value which continuously changes within a certain range, and the analog quantity is a state representation opposite to the digital quantity. The analog input module 5 can be used for collecting parameters such as voltage, current, thermocouple, thermal resistance, temperature and the like of things. In this example embodiment, the analog signal of the sensor may include a temperature signal of the thermometry sensor. The processor 1 may receive the current and voltage signals, the first switching value signal and the analog value signal of the sensor for performing electric energy metering, power factor calculation, out-of-limit monitoring alarm, event sequence recording, etc.
The processor 1 can calculate the electric energy according to the current value and the voltage value.
Power factor is an important technical data of an electric power system. The power factor is a factor that measures the efficiency of an electrical device. The power factor is low, and the reactive power of the circuit for alternating magnetic field conversion is large, so that the line power supply loss is increased, and the power supply department has certain standard requirements on the power factor of the power utilization unit. In an ac circuit, the cosine of the phase difference (Φ) between the voltage and the current is called the power factor, denoted by the symbol cosΦ, which is the ratio of the active power P to the apparent power S in value, i.e. cosΦ=p/S.
The intelligent processing device may further comprise an alarm electrically connected to the processor 1. Out-of-limit monitoring alarm: within the processor 1, a plurality of monitoring thresholds may be stored, which may include: voltage monitoring threshold, current monitoring threshold, temperature monitoring threshold of each circuit breaker, etc.; when the measured voltage value, the measured current value and the measured temperature value of each breaker exceed the monitoring threshold corresponding to the measured voltage value, the measured current value and the measured temperature value of each breaker, the processor 1 controls the alarm to alarm.
In the present exemplary embodiment, the processor 1 is an embedded microprocessor 1. The processor 1 may further comprise an ethernet interface and an RS232 interface, etc., and the ethernet interface may be used to connect with the external low-voltage intelligent power distribution management system 8, and receive the control signal of the low-voltage intelligent power distribution management system 8 and transmit the received current and voltage signals, the first switching value signal, and the analog value signal of the sensor to the low-voltage intelligent power distribution management system 8; the RS232 interface may be used to connect with an external program update device and a debugging device, and may be used for program update and debugging of the intelligent processing device.
The processor 1 is connected with the switching value input module 2, the switching value output module 3, the analog value input module 5 and the alternating current parameter acquisition module 4 in a plugging mode. The plug-in mode is convenient and quick to connect. Of course, those skilled in the art will appreciate that the connection may also be made using connectors.
Further, the intelligent processing device may further include a man-machine interaction module 6, where the man-machine interaction module 6 may be electrically connected to the processor 1 and may be used for performing man-machine interaction. In this example embodiment, the human-machine interaction module 6 may include one or more of a display screen, a keyboard, and a touch screen. The staff can input some control data through a keyboard or a touch screen, and can observe current and voltage signals, a first switching value signal, an analog value signal of a sensor, and incoming electric energy data, power factors, out-of-limit monitoring alarm data and the like processed by the processor 1 through a display screen or the touch screen.
Further, the smart processing device may further comprise a power module 7, wherein the power module 7 may be electrically connected to the processor 1 and may be used for providing power to the smart processing device.
The utility model discloses an intelligent processing device for low voltage distribution system based on IEC61850 can include treater, switching value input module, switching value output module, alternating current parameter acquisition module and analog input module all connect in the treater, switching value input module is used for gathering first switching value signal, alternating current parameter acquisition module is used for gathering current and voltage signal, analog input module is used for gathering the analog signal of sensor, treater receiving current and voltage signal, first switching value signal and sensor's analog signal are used for accomplishing electric energy measurement, power factor calculates, the monitoring warning of crossing limit. On the one hand, by adopting the intelligent processing device, IEC61850 protocol is uniformly adopted, so that various on-site buses are avoided, and interconnection and intercommunication among low-voltage power distribution units can be realized. On the other hand, the intelligent processing device can effectively fuse the power transformation and distribution information of the whole factory based on IEC61850, and is convenient to manage.
The above described features, structures or characteristics may be combined in any suitable manner in one or more embodiments, such as the possible, interchangeable features as discussed in connection with the various embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the inventive aspects may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (7)
1. An IEC 61850-based intelligent processing device for a low voltage power distribution system, comprising:
A processor;
The switching value input module is electrically connected to the processor and is used for collecting a first switching value signal, the switching value input module is a digital value I/O module, and the first switching value signal comprises: remote signaling reflecting the working state of the circuit breaker;
The switching value output module is electrically connected to the processor and is used for outputting a second switching value signal, the switching value output module is a digital value I/O module, and the second switching value signal comprises: a passive contact signal for controlling the opening and closing of the circuit breaker;
The alternating current parameter acquisition module is electrically connected with the processor and used for acquiring current and voltage signals, the alternating current parameter acquisition module comprises an alternating current transmitter and a direct current 20mA acquisition module, the alternating current transmitter converts the alternating current signals into 4-20mA direct current, the direct current 20mA acquisition module is used for acquiring the alternating current signals, and the data are converted into alternating current signal values;
The analog input module is electrically connected to the processor and is used for collecting analog signals of the sensor, and the analog signals of the sensor comprise: a temperature signal of the temperature sensor;
The processor receives the current and voltage signals, the first switching value signal and the analog value signal of the sensor to finish electric energy metering, power factor calculation and out-of-limit monitoring alarm.
2. The IEC 61850-based intelligent processing device for low voltage power distribution system according to claim 1, wherein the intelligent processing device further comprises:
And the man-machine interaction module is electrically connected with the processor and is used for carrying out man-machine interaction.
3. The IEC 61850-based intelligent processing device for low voltage power distribution system according to claim 2, wherein the man-machine interaction module comprises one or more of a display screen, a keyboard, a touch screen.
4. The IEC 61850-based intelligent processing device for low voltage power distribution system according to claim 1, wherein the intelligent processing device further comprises:
and the power module is electrically connected with the processor and used for providing power.
5. The IEC 61850-based intelligent processing device for low voltage power distribution systems according to claim 1, wherein the processor comprises:
The Ethernet interface is used for being connected with an external low-voltage intelligent power distribution management system;
And the RS232 interface is used for being connected with an external program updating device and a debugging device.
6. The IEC61850 based intelligent processing device for low voltage power distribution systems according to claim 1, wherein the processor is an embedded microprocessor.
7. The intelligent processing device for the low-voltage power distribution system based on IEC61850 according to claim 1, wherein the processor is connected with the switching value input module, the switching value output module, the analog value input module and the alternating current parameter acquisition module in a plugging mode.
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| CN200950556Y (en) * | 2006-02-22 | 2007-09-19 | 上海茂索机电设备有限公司 | Low-voltage distribution microcomputer centralized management device |
| CN201336571Y (en) * | 2008-12-23 | 2009-10-28 | 上海德力西集团有限公司 | Intelligent monitoring system for status of medium-voltage switchgear |
| CN204517263U (en) * | 2015-03-05 | 2015-07-29 | 成都振中电气有限公司 | Can the LV Distribution Monitoring System of on-site supervision |
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