CN104124672A - Power restoration method for voltage type fault section front end - Google Patents
Power restoration method for voltage type fault section front end Download PDFInfo
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- CN104124672A CN104124672A CN201410362059.5A CN201410362059A CN104124672A CN 104124672 A CN104124672 A CN 104124672A CN 201410362059 A CN201410362059 A CN 201410362059A CN 104124672 A CN104124672 A CN 104124672A
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Abstract
Disclosed is a power restoration method for a voltage type fault section front end. Time from reclosing to tripping is calculated according to transformer substation protection trip time, first reclosing time, and transformer substation re-tripping time; calculation is performed according to the time and time limit set parameters of a voltage type switch device on lines so as to determine a specific section of a fault section; when a fault is located in a first section, a master station system shuts switching-on of a transformer substation line outlet switch; when the fault is located in a non-first section, the master station system sends out a switching-on instruction in a remote control mode. According to the power restoration method for the voltage type fault section front end, under the condition that the transformer substation line outlet switch lacks secondary reclosing, the fault section is automatically judged by using a distribution automation system; under the condition that secondary reclosing of a transformer substation protection device is not transformed, the problem of power restoration of the voltage type feeder automation fault section can be solved, meanwhile, modification of a transformer substation reclosing device can be avoided, expenses for changing settings or replacing devices are reduced, and an influence on operation of the transformer substation protection device is avoided.
Description
Technical field
the present invention relates to a kind of distribution network failure treatment technology, specifically a kind of method restoring electricity for voltage-type fault section front end.
Background technology
The feeder automation of existing normal voltage time type is taking voltage as failure criterion, transformer station's tripping operation in the time breaking down, after transformer station's reclosing, terminal is passed through time-delay closing step by step, be incorporated into fault section after transformer station again trip, identification fault section; Transformer station again close a floodgate after terminal time-delay closing step by step again, the locking of fault section front end terminal completes fault section isolation, realizes restoring electricity of fault section front end.
Under this operational mode, transformer station needs twice reclosing, realizes restoring electricity of fault section isolation and front end, and reclosing is realized the isolation of fault section for the first time, and reclosing is realized fault section front end and restored electricity for the second time.But operation power code has specified some on-the-spot service conditions and has not allowed to overlap for the second time, as cable line does not allow to overlap.Therefore, can not realize reclosing function for the second time, cause the step that fault section front end restores electricity not realize, thereby can not realize voltage-type feeder automation function.Therefore, need to solve transformer station's problem of reclosing for the second time.
Summary of the invention
The shortcoming existing in order to overcome above-mentioned prior art; the invention provides a kind of method restoring electricity for voltage-type fault section front end; it,, in the case of the secondary reclosing of not transforming transforming plant protecting and arranging, both can solve the voltage-type feeder automation fault section problem that restores electricity.
In order to address the above problem, the present invention by the following technical solutions: a kind of method restoring electricity for voltage-type fault section front end, it is characterized in that, comprise the following steps:
The method restoring electricity for voltage-type fault section front end, is characterized in that being to comprise:
A, transforming plant primary reclosing attribute is set, voltage-type operational mode attribute is set, transformer station is set and occurs switch spring energy storage time t1;
B, adopt power distribution automation main station system troubleshooting function, according to topology information, transforming plant protecting trip time, reclosure time, transformer station trip time again for the first time, the first interval accident of calculating is judged time limit T;
C, judge time limit T according to the first interval accident, calculate with the time limit parameters of voltage-type switchgear on circuit, judge the concrete section of fault section;
D, when the fault section calculating is positioned at first when interval, main station system locking transformer station outlet switch closes a floodgate;
E, when the fault section calculating is positioned at non-first when interval, reclosing command is sent in main station system remote control.
Further; the computational methods that the first interval accident in described step b is judged the time limit as: in the time that power distribution network has an accident; the time that outlet switch reclosing action for the first time, switch are closed a floodgate is designated as t2; being again incorporated into fault point; the transforming plant protecting action outlet switch trip time is designated as t3, and the first interval accident is judged time limit T=t3-t2.
Further, described step c comprises: according to the x time limit between Second Region in the definite outlet of the x time limit of first block switch collecting, be designated as tq1, if T<tq1*5/7, be judged to be the first interval accident, if T>=tq1*5/7, is judged to be non-the first interval accident.
The invention has the beneficial effects as follows: do not have at transformer station's outlet switch under the condition of secondary reclosing; adopt distribution automation system automatic decision fault section; recover the power supply of fault section front end; realize voltage-type feeder automation function; in the case of not transforming the secondary reclosing that transforming plant protecting arranges, both can solve the voltage-type feeder automation fault section problem that restores electricity.It can also avoid revising transformer station's reclosing device, and minimizing change setting or the more expense of changing device, avoid affecting the operation of transforming plant protecting device.
Brief description of the drawings
below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is voltage-type transmission line structure schematic diagram;
Fig. 2 is flow chart of the present invention.
Embodiment
below in conjunction with accompanying drawing, the present invention is described in further details:
In Fig. 1, FCB is transformer station 10 kV outgoing line switch, and PVS is voltage-type block switch, and A and F are the first intervals, and B-E is non-the first interval.In conjunction with the flow chart of Fig. 2, method of the present invention is explained again below:
The Integral Thought of the method for the invention is: adopt power distribution automation main station system troubleshooting function, according to topology information, transforming plant protecting trip time, reclosure time, transformer station trip time again for the first time, calculate the time that overlaps to tripping operation.Then according to this time, calculate with the time limit parameters of voltage-type switchgear on circuit, judge the concrete section of fault section.
In the time that the fault section calculating is arranged in the first interval (as the A interval of Fig. 1), main station system locking transformer station outlet switch closes a floodgate.
When the fault section calculating is arranged in (as the B interval of Fig. 1) between Second Region or later when interval, reclosing command is sent in main station system remote control.Issuing of reclosing command, according to the spring energy-storage Time Calculation of transformer station's outlet switch, requires to be greater than the spring energy-storage time.
After transformer station's outlet switch closes a floodgate, the fault section front end of realizing voltage-type feeder automation restores electricity, thereby realizes voltage-type feeder automation function.
Concrete steps of the present invention are as follows:
Step 1, in electrical power distribution automatization system configuration transformer station, reclosing is a coincidence system.
Step 2, be voltage-type in the feeder automation operational mode of power distribution automation main station system configuration outlet.
Step 3, at the spring energy-storage time t1 of power distribution automation main station system configuration transformer station outlet switch.
Step 4, in the time that power distribution network 10KV fault occurs, outlet switch (FCB1 in Fig. 1) tripping operation, afterwards, system overlaps for the first time, the time that outlet switch FCB1 reclosing action for the first time, switch are closed a floodgate is designated as t2.In the time overlapping to fault place, outlet switch FCB1 can trip again, and the current trip time of transforming plant protecting action outlet switch FCB1 is designated as to t3.
The x time limit of first block switch that step 5, basis collect is determined the x time limit between Second Region in outlet, is designated as tq1.
Step 6, determine that the first interval accident judges time limit T=t3-t2.
If step 7 T<tq1*5/7, is judged to be the first interval accident, locking transformer station closes a floodgate, and transformer station 10 kV outgoing line circuit breaker lock, can not close a floodgate, and accident treatment completes.
If step 8 T>=tq1*5/7, is judged to be non-the first interval accident, waiting for that after the t1 time, electrical power distribution automatization system is sent out reclosing command, the outlet switch FCB1 of transformer station that closes, accident treatment completes.
The above is the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also regarded as protection scope of the present invention.
Claims (3)
1. the method restoring electricity for voltage-type fault section front end, is characterized in that being to comprise:
A, transforming plant primary reclosing attribute is set, voltage-type operational mode attribute is set, transformer station is set and occurs switch spring energy storage time t1;
B, adopt power distribution automation main station system troubleshooting function, according to topology information, transforming plant protecting trip time, reclosure time, transformer station trip time again for the first time, the first interval accident of calculating is judged time limit T;
C, judge time limit T according to the first interval accident, calculate with the time limit parameters of voltage-type switchgear on circuit, judge the concrete section of fault section;
D, when the fault section calculating is positioned at first when interval, main station system locking transformer station outlet switch closes a floodgate;
E, when the fault section calculating is positioned at non-first when interval, reclosing command is sent in main station system remote control.
2. the method restoring electricity for voltage-type fault section front end according to claim 1; it is characterized in that; the computational methods that the first interval accident in described step b is judged the time limit as: in the time that power distribution network has an accident; the time that outlet switch reclosing action for the first time, switch are closed a floodgate is designated as t2; being again incorporated into fault point; the transforming plant protecting action outlet switch trip time is designated as t3, and the first interval accident is judged time limit T=t3-t2.
3. the method restoring electricity for voltage-type fault section front end according to claim 1, it is characterized in that, described step c comprises: according to the x time limit between Second Region in the definite outlet of the x time limit of first block switch collecting, be designated as tq1, if T<tq1*5/7, be judged to be the first interval accident, if T>=tq1*5/7 is judged to be non-the first interval accident.
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| CN201410362059.5A CN104124672B (en) | 2014-07-28 | 2014-07-28 | For the method that voltage-type fault section front end restores electricity |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105137294A (en) * | 2015-09-25 | 2015-12-09 | 国网山东省电力公司济南供电公司 | Voltage type power distribution system single-phase grounding fault elimination method |
| CN107453317A (en) * | 2017-09-21 | 2017-12-08 | 国网山东省电力公司 | A kind of three times reclosing method of distribution line |
| CN108548990A (en) * | 2018-04-04 | 2018-09-18 | 国电南瑞科技股份有限公司 | Telegram in reply Proposals method based on electric network fault behavioural analysis |
| CN110224882A (en) * | 2019-04-25 | 2019-09-10 | 国网江苏省电力有限公司电力科学研究院 | A kind of energy-accumulating power station remote control time delay measuring method and device |
| CN112003232A (en) * | 2020-08-17 | 2020-11-27 | 国网安徽省电力有限公司黄山供电公司 | Transformer substation tripping coincidence determination method based on network topology |
| CN113690835A (en) * | 2021-07-14 | 2021-11-23 | 广西电网有限责任公司电力科学研究院 | Detection method for short-circuit fault section of in-situ overlapping type feeder automation line |
| CN113690834A (en) * | 2021-07-14 | 2021-11-23 | 广西电网有限责任公司电力科学研究院 | Overlapping type feeder automation line short circuit fault interval detection system on spot |
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| CN102916409A (en) * | 2012-11-13 | 2013-02-06 | 山东电力集团公司济南供电公司 | Voltage-time type feeder automation running method based on parameter adjustment |
| CN103746353A (en) * | 2013-12-31 | 2014-04-23 | 宏秀电气有限公司 | Self-healing control system of intelligent distribution network and working method thereof |
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| CN102005819A (en) * | 2010-11-12 | 2011-04-06 | 南京因泰莱配电自动化设备有限公司 | Fault isolation method of electric distribution network |
| CN102916409A (en) * | 2012-11-13 | 2013-02-06 | 山东电力集团公司济南供电公司 | Voltage-time type feeder automation running method based on parameter adjustment |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137294A (en) * | 2015-09-25 | 2015-12-09 | 国网山东省电力公司济南供电公司 | Voltage type power distribution system single-phase grounding fault elimination method |
| CN105137294B (en) * | 2015-09-25 | 2018-08-31 | 国网山东省电力公司济南供电公司 | A kind of voltage-type distribution system single phase earthing troubleshooting methodology |
| CN107453317A (en) * | 2017-09-21 | 2017-12-08 | 国网山东省电力公司 | A kind of three times reclosing method of distribution line |
| CN108548990A (en) * | 2018-04-04 | 2018-09-18 | 国电南瑞科技股份有限公司 | Telegram in reply Proposals method based on electric network fault behavioural analysis |
| CN110224882A (en) * | 2019-04-25 | 2019-09-10 | 国网江苏省电力有限公司电力科学研究院 | A kind of energy-accumulating power station remote control time delay measuring method and device |
| CN110224882B (en) * | 2019-04-25 | 2021-01-22 | 国网江苏省电力有限公司电力科学研究院 | Energy storage power station remote control time delay test method and device |
| CN112003232A (en) * | 2020-08-17 | 2020-11-27 | 国网安徽省电力有限公司黄山供电公司 | Transformer substation tripping coincidence determination method based on network topology |
| CN112003232B (en) * | 2020-08-17 | 2022-07-01 | 国网安徽省电力有限公司黄山供电公司 | Transformer substation tripping coincidence determination method based on network topology |
| CN113690835A (en) * | 2021-07-14 | 2021-11-23 | 广西电网有限责任公司电力科学研究院 | Detection method for short-circuit fault section of in-situ overlapping type feeder automation line |
| CN113690834A (en) * | 2021-07-14 | 2021-11-23 | 广西电网有限责任公司电力科学研究院 | Overlapping type feeder automation line short circuit fault interval detection system on spot |
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Inventor after: Lin Qirong Inventor after: Liu Bo Inventor after: Fan Yongyan Inventor after: Wang Qiaoqiao Inventor after: Guan Ti Inventor after: Yin Aihui Inventor after: Liu Hongxia Inventor after: Ding Lecheng Inventor after: Lin Lin Inventor after: Li Huicong Inventor after: Zhang Qiang Inventor before: Lin Qirong Inventor before: Wang Qiaoqiao Inventor before: Liu Hongxia Inventor before: Wang Jingchuan Inventor before: Dong Chenhui Inventor before: Wang Xiaojun Inventor before: Lin Lin |
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