CN107846015A - Intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication - Google Patents
Intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication Download PDFInfo
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- CN107846015A CN107846015A CN201711113849.XA CN201711113849A CN107846015A CN 107846015 A CN107846015 A CN 107846015A CN 201711113849 A CN201711113849 A CN 201711113849A CN 107846015 A CN107846015 A CN 107846015A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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Abstract
The invention discloses a kind of intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication, comprise the following steps：Step 1：Intelligent terminal makees periodicity inspection to circuit, judge circuit whether normal operation, if normally, terminal continue self-test, it is abnormal then to enter step 2；Step 2：Fault location, fault identification are carried out by intelligent terminal, and then complete failure removal, Fault Isolation success, then into step 3；Step 3：Turn supply program into failure, according to can turn for voltage and trouble point PRE-FAULT CURRENT information at bar coupler, a plurality of turn is judged for path, show that Optimal Load turn supplies path；Step 4：EP (end of program).This method can carry out Optimal Load to dead electricity load and turn to supply automatically, without need dispatcher come by rule of thumb it is cumbersome select to turn supply path, largely the workload of reduction dispatcher, improves operating efficiency and accuracy.
Description
Technical field
The present invention relates to field of power distribution, more particularly to a kind of intelligent distribution network load transfer based on peer-to-peer communication is optimal
Routing resource.
Background technology
With the fast development of China's low-voltage network, power supply reliability directly influences the production and life of society.
In power distribution network, connection of ring power network mode is that the most typically have standby wiring type, while dual power supply and more power supplys supply in power distribution network
The mode of connection of electricity is also more and more common.When distribution bus, switch or ring main unit need overhauled or its somewhere occur therefore
During barrier, except needing to carry out isolating corresponding failure region, should also load transfer be carried out to dead electricity region, will by Loop Closing Operation
On the transfer of dead electricity the load other buses or feeder line that are attached thereto, so as to realize the load that do not have a power failure down, when reducing failure, maintenance pair
The entire effect of power distribution network.
Electrical equipment in power distribution network is various, and connection type becomes increasingly complex, and turning for wall scroll feeder line is also obvious for path
Increase, thus form can mutually fall the supply network supplied between huge, numerous circuits, and a faulty line often occur can be by
The problem of a plurality of circuit is supplied.Turn to supply problem for above-mentioned circuit multipath, although dispatcher can be by calculating in advance
The method in be possible to load transfer path carries out judgement selection, but due to the complexity of power distribution network running situation, works as distribution
When net breaks down and needs quick select to turn for path to recover to isolate dead electricity region, dispatcher also needs to consider feeder line
Loading condition and current electric grid topological structure can just judge.Thus, the workload of dispatcher will be aggravated significantly, and work is lost
Rate can also increase by mistake, it is impossible to meet the needs of modern power systems.
The content of the invention
In order to solve the above-mentioned technical problem, a kind of operating efficiency of present invention offer is high, the degree of accuracy is high is led to based on peer-to-peer
The intelligent distribution network load transfer optimal route selection method of news.
Technical proposal that the invention solves the above-mentioned problems is：A kind of intelligent distribution network load transfer based on peer-to-peer communication
Optimal route selection method, comprise the following steps：
Step 1：Intelligent terminal makees periodicity inspection to circuit, judge circuit whether normal operation, if normally, terminal continue
Self-test, it is abnormal then to enter step 2；
Step 2：Fault location, fault identification are carried out by intelligent terminal, and then complete failure removal, Fault Isolation success, is then entered
Enter step 3；
Step 3：Turn to supply program into failure, believe according to that can turn to supply voltage and trouble point PRE-FAULT CURRENT at bar coupler
Breath, a plurality of turn is judged for path, show that Optimal Load turns to supply path；
Step 4：EP (end of program).
The above-mentioned intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication, in the step 1,
When circuit is normal, intelligent terminal makees periodicity inspection, while checks the communication condition between adjacent end, if only side is whole
End can not communicate, then using the neighbours of the neighbor terminal neighbor terminal new as oneself, while each terminal will update network topology letter
Breath.
The above-mentioned intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication, in the step 2,
Intelligent terminal possesses perfect fault location, identification, isolation features, intelligent terminal collection corresponding information, sentences according to various failures
According to, failure is positioned and recognized, and then completion failure removal, isolation work.
The above-mentioned intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication, the step 3 are specific
Step is：
3-1）When short trouble occurs for somewhere on distribution line, intelligent terminal will act power distribution room I, the distribution of the both sides at short circuit
Interconnection switch tripping operation in room II, realizes the isolation of failure, the power distribution room II away from transformer station loses on this failure distribution line
Go to power；
3-2）Intelligent terminal will search for whole the power supply blocks and interconnection switch adjacent with power distribution room II, it is assumed that be obtained through search
It is with interconnection switch power supply blocknIt is individual；
3-3）Each intelligent terminal is exchanged corresponding information, obtained each other by peer to peer communication modenAt individual power supply block interconnection switch
Voltagev k ,v k For voltage at k-th of power supply block interconnection switch, k≤n；The place's PRE-FAULT CURRENT that breaks down is obtained simultaneouslyi 0、nIt is individual
Electric current at the ring main unit of power supply block bus endi j,i jForjElectric current at individual power supply block end-rings net cabinet,j≤n；
3-4）ComparenVoltage swing at individual power supply block interconnection switch, magnitude of voltage is bigger, turns higher for Path selection priority；
3-5）According to 3-4）Transfer supplies priority, selecting priority highest power supply block m, m≤n,i mPower block end for this
Hold electric current at ring main unit；
3-6）Into electric current comparing element, the maximum current that order power supply block m allows isi mmax, intelligent terminal multilevel iudge (i 0+i m)/i mmaxWhether 1 is less than, if so, then closure power supply block m bar coupleres close a floodgate, output turns to supply path, as optimal turn
For path；If it is not, then selecting low one-level priority power supply block to repeat electric current multilevel iudge, meet bar until searching
Part turn supply path, as optimal turn supplies path.
The beneficial effects of the present invention are：The present invention is made up of different peer-to-peer communication network, self-healing intelligent terminal
Difference ring carries out fault location, Fault Identification and Fault Isolation；After Fault Isolation success, the interconnection switch in search dead electricity region,
According to relevant voltage, electric current criterion, each interconnection switch combined floodgate priority is drawn, optimal turn is selected and supplies path.This method can
Automatically Optimal Load is carried out to dead electricity load to turn to supply, without need dispatcher come by rule of thumb it is cumbersome select to turn to supply path, very greatly
The workload of dispatcher is reduced in degree, improves operating efficiency and accuracy.
Brief description of the drawings
Fig. 1 is intelligent distribution network illustraton of model in the embodiment of the present invention.
Fig. 2 is load transfer optimal route selection method flow chart in the embodiment of the present invention.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, a kind of intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication,
Comprise the following steps：
Step 1：Intelligent terminal makees periodicity inspection to circuit, judge circuit whether normal operation, if normally, terminal continue
Self-test, it is abnormal then to enter step 2.
When circuit is normal, intelligent terminal makees periodicity inspection, while checks the communication condition between adjacent end, if only
There is a lateral terminal to communicate, then using the neighbours of the neighbor terminal neighbor terminal new as oneself, while each terminal will update net
Network topology information.
Step 2：Fault location, fault identification are carried out by intelligent terminal, and then complete failure removal, Fault Isolation success,
Then enter step 3.Intelligent terminal possesses perfect fault location, identification, isolation features, and intelligent terminal gathers corresponding information, according to
According to various failure criterions, failure is positioned and recognized, and then complete failure removal, isolation work.
Step 3：Turn supply program into failure, according to can turn for electric before voltage at bar coupler and failure point failure
Stream information, a plurality of turn is judged for path, show that Optimal Load turns to supply path.
Concretely comprise the following steps：
3-1）As shown in figure 1, when short trouble occurs on distribution line at F1, intelligent terminal will act the #7 of the both sides at short circuit
Interconnection switch S19 tripping operations in interconnection switch S18, #8 power distribution room in power distribution room, realize the isolation of failure, this failure distribution
The #8 power distribution rooms away from transformer station lose power supply on circuit, need to carry out failure in next step and turn to supply；
3-2）Intelligent terminal will search for whole the power supply blocks and interconnection switch adjacent with #8 power distribution rooms, in this example, through search
Obtained power supply block is transformer station A and B；
3-3）Each intelligent terminal exchanges corresponding information, obtains voltage at interconnection switch S7 each other by peer to peer communication modev 1With
Voltage at interconnection switch S15v 2, while obtain F1 PRE-FAULT CURRENTsi 0, electric current at #3 loadsi 1With electric current at #6 loadsi 2；
3-4）Compare voltage swing at 2 power supply block interconnection switches, magnitude of voltage is bigger, turns higher for Path selection priority；
3-5）According to 3-4）Transfer supplies priority, selecting priority highest power supply block；Ifv 1≤v 2When, then it is directly entered change
Power station B electric current comparing elements, into step 3-6）；Ifv 1>v 2When, then into transformer station A electric current comparing elements, into step 3-
7）；
3-6）In transformer station B electric current comparing elements, the maximum current that making transformer station B allows isi Bmax, terminal multilevel iudge (i 0
+i 2)/i BmaxWhether 1 is less than, if (i 0+i 2)/i Bmax<1, then interconnection switch S15 is closed, is powered by transformer station B for #8 power distribution rooms,
Output turns to supply path；If (i 0+i 2)/i Bmax>=1, then terminate program, exported without turn for path；
3-7）In transformer station A electric current comparing elements, the maximum current that making transformer station A allows isi Amax, terminal multilevel iudge (i 0
+i 1)/i AmaxWhether 1 is less than, if (i 0+i 1)/i Amax<1, then interconnection switch S7 is closed, is powered by transformer station A for #8 power distribution rooms, it is defeated
Go out and turn to supply path；If (i 0+i 1)/i Amax>=1, then terminate program, exported without turn for path.
Step 4：EP (end of program).
In summary, the present invention obtains corresponding electrical quantity on the basis of intelligent terminal by peer-to-peer communication network
Information, carry out adjusting judgement according to the inventive method, you can realize and carry out the optimal turn of selection for path to dead electricity load automatically,
And then restore electricity, load transfer is continually carried out by rule of thumb without dispatcher.
Claims (4)
1. a kind of intelligent distribution network load transfer optimal route selection method based on peer-to-peer communication, comprises the following steps：
Step 1：Intelligent terminal makees periodicity inspection to circuit, judge circuit whether normal operation, if normally, terminal continue
Self-test, it is abnormal then to enter step 2；
Step 2：Fault location, fault identification are carried out by intelligent terminal, and then complete failure removal, Fault Isolation success, is then entered
Enter step 3；
Step 3：Turn to supply program into failure, believe according to that can turn to supply voltage and trouble point PRE-FAULT CURRENT at bar coupler
Breath, a plurality of turn is judged for path, show that Optimal Load turns to supply path；
Step 4：EP (end of program).
2. the intelligent distribution network load transfer optimal route selection method according to claim 1 based on peer-to-peer communication,
It is characterized in that：In the step 1, when circuit is normal, intelligent terminal makees periodicity inspection, while inspection and adjacent end
Between communication condition, if only a lateral terminal can not communicate, using the neighbours of the neighbor terminal neighbor terminal new as oneself, together
When each terminal will update network topological information.
3. the intelligent distribution network load transfer optimal route selection method according to claim 1 based on peer-to-peer communication,
It is characterized in that：In the step 2, intelligent terminal possesses perfect fault location, identification, isolation features, intelligent terminal collection
Corresponding information, according to various failure criterions, failure is positioned and recognized, and then complete failure removal, isolation work.
4. the intelligent distribution network load transfer optimal route selection method according to claim 1 based on peer-to-peer communication,
It is characterized in that：The step 3 concretely comprises the following steps：
3-1）When short trouble occurs for somewhere on distribution line, intelligent terminal will act power distribution room I, the distribution of the both sides at short circuit
Interconnection switch tripping operation in room II, realizes the isolation of failure, the power distribution room II away from transformer station loses on this failure distribution line
Go to power；
3-2）Intelligent terminal will search for whole the power supply blocks and interconnection switch adjacent with power distribution room II, it is assumed that be obtained through search
It is with interconnection switch power supply blocknIt is individual；
3-3）Each intelligent terminal is exchanged corresponding information, obtained each other by peer to peer communication modenAt individual power supply block interconnection switch
Voltagev k ,v k For voltage at k-th of power supply block interconnection switch, k≤n；The place's PRE-FAULT CURRENT that breaks down is obtained simultaneouslyi 0、nIt is individual
Electric current at the ring main unit of power supply block bus endi j,i jForjElectric current at individual power supply block end-rings net cabinet,j≤n；
3-4）ComparenVoltage swing at individual power supply block interconnection switch, magnitude of voltage is bigger, turns higher for Path selection priority；
3-5）According to 3-4）Transfer supplies priority, selecting priority highest power supply block m, m≤n,i mPower block end for this
Electric current at ring main unit；
3-6）Into electric current comparing element, the maximum current that order power supply block m allows isi mmax, intelligent terminal multilevel iudge (i 0+i m)/i mmaxWhether 1 is less than, if so, then closure power supply block m bar coupleres close a floodgate, output turns to supply path, as optimal turn
For path；If it is not, then selecting low one-level priority power supply block to repeat electric current multilevel iudge, meet bar until searching
Part turn supply path, as optimal turn supplies path.
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| CN108988341A (en) * | 2018-09-05 | 2018-12-11 | 国网山东省电力公司枣庄供电公司 | Distribution equipment malfunction adjusting method and device |
| CN110601188A (en) * | 2019-09-20 | 2019-12-20 | 国网天津市电力公司 | Rapid processing method for large-area power failure of power distribution network based on optimal regional load transfer strategy |
| CN111882126A (en) * | 2020-07-24 | 2020-11-03 | 贵州电网有限责任公司 | N-1-1 static security check optimization method and system |
| CN112134263A (en) * | 2020-08-20 | 2020-12-25 | 南京因泰莱电器股份有限公司 | Distribution network self-healing method based on peer-to-peer information interaction |
| CN112134353A (en) * | 2020-09-01 | 2020-12-25 | 珠海欧力配网自动化股份有限公司 | Distributed power distribution method based on GOOSE and power distribution automation terminal |
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| CN108988341A (en) * | 2018-09-05 | 2018-12-11 | 国网山东省电力公司枣庄供电公司 | Distribution equipment malfunction adjusting method and device |
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