CN103022991A - Power distribution network fault quick response method based on controller area network (CAN) bus expansion - Google Patents
Power distribution network fault quick response method based on controller area network (CAN) bus expansion Download PDFInfo
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- CN103022991A CN103022991A CN2012104806874A CN201210480687A CN103022991A CN 103022991 A CN103022991 A CN 103022991A CN 2012104806874 A CN2012104806874 A CN 2012104806874A CN 201210480687 A CN201210480687 A CN 201210480687A CN 103022991 A CN103022991 A CN 103022991A
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Abstract
本发明公开了一种基于CAN总线扩展的配电网故障快速响应方法，通过在配电网线路中设置若干配电监控终端来对配电网故障进行处理。本发明通过数据处理模块实时监测配电线路的电压、电流、零序电流和配电设备运行状态，数据处理模块将故障信息和开关变位等信息通过内部CAN总线快速上送到通信管理模块，各个配电监控终端的通信管理模块之间通过以太网通信，完成线路故障区域的快速定位、故障隔离和非故障区域的快速恢复供电。本发明采用CAN总线方式扩展的快速处理机制，有效提高了故障数据的传输时间，极大缩短了线路故障处理时间，提高了电网供电的稳定和可靠性，给整个社会带来较大的收益。
The invention discloses a fast response method for distribution network faults based on CAN bus expansion, which handles distribution network faults by setting a plurality of distribution monitoring terminals in the distribution network lines. The invention monitors the voltage, current, zero-sequence current of the power distribution line and the operating state of the power distribution equipment in real time through the data processing module, and the data processing module quickly sends information such as fault information and switch displacement to the communication management module through the internal CAN bus, The communication management modules of each power distribution monitoring terminal communicate with each other through Ethernet to complete the rapid location of line fault areas, fault isolation and fast recovery of power supply in non-faulty areas. The present invention adopts the extended fast processing mechanism of CAN bus, effectively improves the transmission time of fault data, greatly shortens the line fault processing time, improves the stability and reliability of power grid power supply, and brings greater benefits to the whole society.
Description
Technical field
The present invention relates to a kind of maintaining method of power distribution network, specifically be based on the distribution network failure fast response method of CAN bus expansion, belong to distribution network automated technical field.
Background technology
Present domestic distribution automation technology obtains significant progress, the distribution network failure tupe mainly is the concentrated pattern, it is the pattern of distribution terminal+communication network+main website, this kind pattern not only dependence to communication network is stronger, and the fault treating procedure of the fast recovery of power supply of whole fault location, Fault Isolation and non-fault zone is a minute level, can't satisfy the fast processing requirement to distribution network failure.
Summary of the invention
The deficiency that exists for overcoming above-mentioned prior art the invention provides the distribution network failure fast response method based on the expansion of CAN bus, and it not only can improve the fault handling time of distribution line, and can improve the stable and reliability of mains supply.
The present invention solves the technical scheme that its technical problem takes: based on the distribution network failure fast response method of CAN bus expansion, by being set in distribution network line, some monitoring of electric power terminal come distribution network failure is processed, described monitoring of electric power terminal is by in the interconnection switch access distribution network line, and access is connected with the Ethernet of distribution network system main frame, it is characterized in that
Described monitoring of electric power terminal comprises CAN bus, communication management module and some data processing modules, described CAN bus links to each other with data processing module with communication management module respectively, described communication management module access network based on ethernet, described data processing module is in order to the Real-Time Monitoring distribution line;
Said method comprising the steps of:
S1, whether the data processing module Real-Time Monitoring distribution line of monitoring of electric power terminal breaks down;
S2, when detecting fault-signal, data processing module sends to communication management module by the CAN bus with fault-signal;
S3, communication management module sends to adjacent monitoring of electric power terminal by Ethernet with fault-signal after receiving fault-signal;
S4, adjacent monitoring of electric power terminal carry out the fault location judgement after receiving fault-signal, if adjacent monitoring of electric power terminal does not detect fault-signal, then are judged to be two circuits between the monitoring of electric power terminal and break down; If adjacent monitoring of electric power terminal detects fault-signal, then repeat S3 and S4 step, until till the position, fault point.
S5 carries out Fault Isolation to the fault zone;
S6 restores electricity to non-fault zone.
In the said method, described monitoring distribution line comprises the running status of monitoring distribution circuit electric voltage, electric current, zero-sequence current and distribution terminal equipment.
The step of described in the said method Fault Isolation being carried out in the fault zone comprises following process:
The communication management module of two ends, fault zone monitoring of electric power terminal issues trip signal by the CAN bus to data processing module;
Data processing module receives and disconnects corresponding interconnection switch behind the trip signal, and returns to communication management module and to trip into function signal;
Communication management module receives and trips into backward other monitoring of electric power terminal of function signal and send and trip into function signal.
The step that described in the said method non-fault zone is restored electricity comprises following process:
Become function signal if monitoring of electric power terminal receives the tripping operation that is adjacent monitoring of electric power terminal other end interconnection switch, communication management module issues the order of closing a floodgate by the CAN bus to data processing module;
Data processing module receives the corresponding interconnection switch that closes after the order of closing a floodgate, and returns to communication management module and to trip into function signal.
The invention has the beneficial effects as follows, the present invention is by voltage, electric current, zero-sequence current and the controller switching equipment running status of data processing module Real-Time Monitoring distribution line, data processing module is crossed inner CAN bus with information exchanges such as fault message and switch changed positions and is delivered to communication management module on fast, by ethernet communication, finish the fast recovery of power supply of quick location, Fault Isolation and the non-fault zone in line fault zone between the communication management module of each monitoring of electric power terminal.The present invention adopts the fast processing mechanism of CAN bus mode expansion, Effective Raise the transmission time of fault data, greatly shortened the line fault processing time, improved the stable and reliability of mains supply, bring larger income to entire society.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing:
Fig. 1 is program flow diagram of the present invention;
Fig. 2 is the theory diagram of monitoring of electric power terminal of the present invention;
Fig. 3 is the schematic diagram of implementation distribution failure response of the present invention.
Embodiment
A kind of distribution network failure fast response method based on the expansion of CAN bus of the present invention, by being set in distribution network line, some monitoring of electric power terminal come distribution network failure is processed, described monitoring of electric power terminal is by in the interconnection switch access distribution network line, and access is connected with the Ethernet of distribution network system main frame.
As shown in Figure 2, described monitoring of electric power terminal comprises CAN bus, communication management module and some data processing modules, described CAN bus links to each other with data processing module with communication management module respectively, described communication management module access network based on ethernet, described data processing module is in order to the Real-Time Monitoring distribution line;
As shown in Figure 1, method of the present invention may further comprise the steps:
Step S01, the work beginning.
Step S02, whether the data processing module Real-Time Monitoring distribution line of monitoring of electric power terminal breaks down.
Step S03 if data processing module detects fault-signal, then enters step S04, otherwise changes step S05. over to
Step S04, data processing module sends to communication management module by the CAN bus with fault-signal.
Step S05, whether communication management module receives fault-signal, if yes then enter step S06, otherwise changes step S03 over to.
Step S06, communication management module sends to adjacent monitoring of electric power terminal by Ethernet with the fault-signal of receiving;
Step S07, whether adjacent monitoring of electric power terminal detects fault-signal, if it is changes step S06 over to, otherwise enters step S08.
Step S08, fault location, adjacent monitoring of electric power terminal carries out the fault location judgement after receiving fault-signal, if adjacent monitoring of electric power terminal does not detect fault-signal, then is judged to be two circuits between the monitoring of electric power terminal and breaks down.
Step S09 carries out Fault Isolation to the fault zone.The described step that Fault Isolation is carried out in the fault zone comprises following process: 1) communication management module of two ends, fault zone monitoring of electric power terminal issues trip signal by the CAN bus to data processing module; 2) data processing module receives and disconnects corresponding interconnection switch behind the trip signal, and returns to communication management module and to trip into function signal; 3) communication management module receives and trips into backward other monitoring of electric power terminal of function signal and send and trip into function signal.
Step S, 10, non-fault zone is restored electricity.The described step that non-fault zone is restored electricity comprises following process: 1) become function signal if monitoring of electric power terminal receives the tripping operation that is adjacent monitoring of electric power terminal other end interconnection switch, communication management module issues the order of closing a floodgate by the CAN bus to data processing module; 2) data processing module receives the corresponding interconnection switch that closes after the order of closing a floodgate, and returns to communication management module and to trip into function signal.
In the said method, described monitoring distribution line comprises the running status of monitoring distribution circuit electric voltage, electric current, zero-sequence current and distribution terminal equipment.
Fig. 3 is the schematic diagram of implementation distribution failure response of the present invention.As shown in Figure 3, suppose between interconnection switch S2 and the interconnection switch S3 phase fault to occur, the present invention is as follows to the processing procedure of this fault: 1) data processing module of distribution testing control terminal 1 will detect the phase fault electric current of interconnection switch S2 in the 40ms.
2) data processing module of distribution testing control terminal 1 sends to communication management module with fault-signal by the CAN bus immediately, transmits delay time＜100ms.
3) after the communication management module of distribution testing control terminal 1 is received fault-signal, fault-signal is sent to distribution testing control terminal 2 by ethernet network, transmit delay time＜20ms.
4) distribution testing control terminal 2 is received the switch fault signal of interconnection switch S2, and distribution testing control terminal 2 does not detect fault-signal, therefore thereby can judge that the fault zone finishes fault location at interconnection switch S2 and interconnection switch S.
5) communication management module of distribution testing control terminal 1 and distribution testing control terminal 1 issues trip signal to data processing module fast by the CAN bus, difference tripping interconnection switch S2 and interconnection switch S3, thus finish fault section isolation.
6) after distribution testing control terminal 3 receives that the tripping operation of the interconnection switch S3 of the interconnection switch S2 of distribution testing control terminal 1 and distribution testing control terminal 2 becomes function signal, its communication management module issues the order of closing a floodgate to data processing module fast by the CAN bus, the interconnection switch S5 that closes, thus the fast recovery of power supply of non-fault zone finished.
Because switchgear house monitoring circuit feeder number is more simultaneously, the monitoring capacity relative of separate unit monitoring of electric power terminal is fixed, therefore, the present invention it is also conceivable that and passes through dispersion treatment, the mode of centralized management realizes the monitoring of switchgear house, solves the multi-loop line monitoring problem by growth data processing module quantity.
Claims (4)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329502A (en) * | 2016-11-11 | 2017-01-11 | 东华大学 | Relay protection method based on PLC and CAN bus technology |
| CN111505442A (en) * | 2020-05-06 | 2020-08-07 | 北京科锐配电自动化股份有限公司 | A peer-to-peer communication-based distribution network fault handling method |
| CN119596077A (en) * | 2025-02-08 | 2025-03-11 | 清大智能（北京）科技有限公司 | A method and system for quickly locating, isolating and restoring ground faults in a distribution network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329502A (en) * | 2016-11-11 | 2017-01-11 | 东华大学 | Relay protection method based on PLC and CAN bus technology |
| CN111505442A (en) * | 2020-05-06 | 2020-08-07 | 北京科锐配电自动化股份有限公司 | A peer-to-peer communication-based distribution network fault handling method |
| CN119596077A (en) * | 2025-02-08 | 2025-03-11 | 清大智能（北京）科技有限公司 | A method and system for quickly locating, isolating and restoring ground faults in a distribution network |
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Application publication date: 20130403 |