CN102288859A - 10-kilovolt feed line short circuit test method - Google Patents
10-kilovolt feed line short circuit test method Download PDFInfo
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- CN102288859A CN102288859A CN2011101710216A CN201110171021A CN102288859A CN 102288859 A CN102288859 A CN 102288859A CN 2011101710216 A CN2011101710216 A CN 2011101710216A CN 201110171021 A CN201110171021 A CN 201110171021A CN 102288859 A CN102288859 A CN 102288859A
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Abstract
The invention relates to a 10-kilovolt feed line short circuit test method. A real and controllable 10-kilovolt short circuit fault is formed by directly accessing a specially manufactured impedance element into a 10-kilovolt overhead feed line, so that a systematic test is performed on a power distribution automation fault process. The 10-kilovolt feed line short circuit test method is used for an on-site test on a fault process of a simple, practical, standard, integrated and intelligent power distribution automation system with an overhead line. A fault phenomenon is real; and the 10-kilovolt feed line short circuit test method can be used for systematic test on the fault process of a main station, a sub station, a terminal, a protection matching and backup power supply and a communication and feed line switch.
Description
Technical field
The present invention relates to a kind of phenomenon of the failure simulation of distribution automation system, the test method of fault treating procedure test, belong to electrical power distribution automatization system (DAS), fields such as power distribution network simulation test.
Background technology
At present, test to the distribution automation engineering generally is to adopt the method that distribution network automated main website, substation and terminal are tested respectively, but feeder automation many critical functions such as (FA) that distribution automation system has fault judgement, isolation and perfects regional restore funcitons must adopt the method for testing of system just can detect, and fault handling needs main website, substation, terminal, communication system and switchgear fellowship, cooperation.In addition, some application functions of distribution automation system, as: load prediction, economical operation, expansion power supply capacity etc. also lack effective means of testing.
Professor Liu Dong of Shanghai Communications University studies the electrical power distribution automatization system measuring technology, once published " electrical power distribution automatization system test " book, but the measuring technology and the delivery test method that mainly stress each production procedure of manufacturing enterprise, but be not suitable for carrying out the fielded system test.
Professor Liu Jian of Shaanxi Electric Power Research Institute has carried out certain research to the electrical power distribution automatization system measuring technology, has developed feeder automation experimental test platform, but this test board also is towards the laboratory, is difficult to carry out on-the-spot test.
Abroad do not appear in the newspapers in the achievement in research aspect the electrical power distribution automatization system test yet; situation about recognizing from the channel of investigation and academic exchange is: the way that adopts relay-protection tester simulation feeder fault is abroad arranged; but all be to carry out, be difficult to carry out on-the-spot test in the laboratory.Therefore need to study new, effective distribution automation system method of testing.
At present existing distribution automation Engineering Testing Technique is tested separately distribution network automated main website, substation and terminal respectively, the system detection method that lacks critical functions such as fault judgement, isolation and sound zone recovery to distribution automation system, lack method of testing, also lack the means of testing of application functions such as load prediction to distribution automation system, economical operation, expansion power supply capacity main website, substation, terminal, communication system and the common cooperation of switchgear in the fault treating procedure.Compared with the prior art,
Summary of the invention
The objective of the invention is at present distribution network automated shortage efficient system means of testing, a kind of 10kV feeder line short-circuit test method of testing is provided, by special impedor is directly inserted the 10kV overhead feeder, form true controlled 10kV short trouble, thereby the power distribution automation fault treating procedure is systematically tested.
Technical scheme of the present invention is achieved in that
1) preceding position and power supply transformer station's impedance and transformer short-circuit impedance according to selected overhead transmission line short dot of experiment calculated this short dot generation two-phase nonmetal character fault and short-circuit current and is limited in the required phase fault impedance magnitude of 500A-1000A;
2) with the 2 Europe reactor series and parallels of a plurality of permissions, obtain testing required short-circuit impedance by 1000A;
3) short-circuit impedance element and 10kV intelligent breaker direct serial are inserted the two alternate of 10kV overhead feeder;
4) by tripping again behind the closed 300ms of telechiric device control 10kV intelligent breaker, the two-phase transient fault of 10kV feeder line is tested;
5) by the closed and no longer tripping of telechiric device control 10kV intelligent breaker, the two-phase permanent fault of 10kV feeder line is tested.
This method of testing is calculated two-phase nonmetal character short-circuit current according to tested distribution feeder system impedance, dispose suitable high capacity short-circuit impedance, short-circuit current is reduced to below the 1000A, reduce the impact of short-circuit current to system, carry out the instantaneous and permanent short test of real power distribution network overhead feeder two-phase, the fault handling of comprehensive assessment electrical power distribution automatization system and Self healing Strategy function.
Advantage of the present invention is: the on-the-spot test means to the simple type that contains overhead transmission line, practical, standard form, integrated-type, intelligent electrical power distribution automatization system fault treating procedure are provided; System testing means to the fault treating procedure of distribution network automated main website, substation, terminal, protection cooperation, standby power supply, communication and feeder switch are provided, and phenomenon of the failure is true and reliable.
Description of drawings
Fig. 1 is a 10kV overhead feeder short-circuit test method synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Before the test, be limited in the required phase fault impedance magnitude of 500A-1000A according to the position of selected overhead transmission line short dot and power transformer station's impedance and this short dot generation two-phase nonmetal character fault of Calculation of transformer short-circuit impedance and short-circuit current, with a plurality of resistance values is 2 Europe reactor connection in series-parallel, obtains required short-circuit impedance flexibly.
10kV overhead feeder C is through 10kV intelligent breaker, current transformer, the high capacity short-circuit impedance (see figure 1) that is connected with A, and two-phase nonmetal character short trouble promptly takes place the 10kV intelligent breaker that closes under the control of intelligent remote control device.The branch time of closing of intelligent remote control device control 10kV intelligent breaker is caused 10kV overhead feeder two-phase transient fault or two-phase permanent fault during test.Test two-phase transient fault; only need the tripping again after (about 300ms) of closing a period of time of 10kV intelligent breaker; the breaker closing time is protected the time of action, the tripping of feeder line isolating switch greater than the 10kV overhead feeder, and separates before the action of 10kV overhead feeder isolating switch reclosing.Test two-phase permanent fault just can not separated after the 10kV intelligent breaker closes.
The control protective device of intelligent breaker prevents because of feeder line isolating switch tripping causing power distribution network supply transformer back-up protection action as one of safety precautions of excising fault in the test, causes power distribution network power failure expanded range, test to end.
Claims (1)
1. a 10kV feeder line short-circuit test method is characterized in that,
1) preceding position and power supply transformer station's impedance and transformer short-circuit impedance according to selected overhead transmission line short dot of experiment calculated this short dot generation two-phase nonmetal character fault and short-circuit current and is limited in the required phase fault impedance magnitude of 500A-1000A;
2) with the 2 Europe reactor series and parallels of a plurality of permissions, obtain testing required short-circuit impedance by 1000A;
3) short-circuit impedance element and 10kV intelligent breaker direct serial are inserted the two alternate of 10kV overhead feeder;
4) by tripping again behind the closed 300ms of telechiric device control 10kV intelligent breaker, the two-phase transient fault of 10kV feeder line is tested;
5) by the closed and no longer tripping of telechiric device control 10kV intelligent breaker, the two-phase permanent fault of 10kV feeder line is tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101710216A CN102288859A (en) | 2011-06-23 | 2011-06-23 | 10-kilovolt feed line short circuit test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101710216A CN102288859A (en) | 2011-06-23 | 2011-06-23 | 10-kilovolt feed line short circuit test method |
Publications (1)
| Publication Number | Publication Date |
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| CN102288859A true CN102288859A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101710216A Pending CN102288859A (en) | 2011-06-23 | 2011-06-23 | 10-kilovolt feed line short circuit test method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565592A (en) * | 2012-01-18 | 2012-07-11 | 绍兴电力局 | Technology-systematization verification short-circuit test method for intelligent substation |
| CN103219716A (en) * | 2013-05-08 | 2013-07-24 | 深圳市泰昂能源科技股份有限公司 | Protection method and device for short circuit and overload of feed line of power supply system of transformer substation |
| CN103454994A (en) * | 2013-07-25 | 2013-12-18 | 国家电网公司 | Control method suitable for multiple-seat 500kV transformer substation remote-control transmission |
| CN107607810A (en) * | 2017-09-01 | 2018-01-19 | 中铁电气化局集团有限公司 | A kind of rail traction supply current Distribution Test system |
| CN111194411A (en) * | 2017-10-30 | 2020-05-22 | 伊顿智能动力有限公司 | Method and apparatus for measuring expected short circuit current |
Citations (3)
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| US5103365A (en) * | 1989-11-16 | 1992-04-07 | Togami Electric Mfg. Co., Ltd. | Downed conductor automatic detecting device |
| JPH09130961A (en) * | 1995-10-31 | 1997-05-16 | Kyushu Electric Power Co Inc | Method and apparatus for supervising power line |
| CN201859584U (en) * | 2010-10-29 | 2011-06-08 | 河北省电力公司职业技术培训中心 | Cable fault simulation training device |
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2011
- 2011-06-23 CN CN2011101710216A patent/CN102288859A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5103365A (en) * | 1989-11-16 | 1992-04-07 | Togami Electric Mfg. Co., Ltd. | Downed conductor automatic detecting device |
| JPH09130961A (en) * | 1995-10-31 | 1997-05-16 | Kyushu Electric Power Co Inc | Method and apparatus for supervising power line |
| CN201859584U (en) * | 2010-10-29 | 2011-06-08 | 河北省电力公司职业技术培训中心 | Cable fault simulation training device |
Non-Patent Citations (4)
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| 施建东: "故障限流器的非线性稳定控制器设计", 《江苏电机工程》 * |
| 曾琦等: "利用故障限流器提高电力***稳定性的控制策略", 《继电器》 * |
| 邹立峰等: "电网三相短路试验与35KV超导限流器的限流效果分析", 《全国电力***配电技术协作网第二届年会论文集》 * |
| 郝志杰等: "新型固态故障限流器对电力***暂态稳定性的影响", 《电力***自动化》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565592A (en) * | 2012-01-18 | 2012-07-11 | 绍兴电力局 | Technology-systematization verification short-circuit test method for intelligent substation |
| CN102565592B (en) * | 2012-01-18 | 2015-09-30 | 绍兴电力局 | A kind of technology-systematization verification short-circuit test method for intelligent substation |
| CN103219716A (en) * | 2013-05-08 | 2013-07-24 | 深圳市泰昂能源科技股份有限公司 | Protection method and device for short circuit and overload of feed line of power supply system of transformer substation |
| CN103219716B (en) * | 2013-05-08 | 2015-08-19 | 深圳市泰昂能源科技股份有限公司 | The guard method of transformer station's power-supply system feeder line short circuit and overload and protective device thereof |
| CN103454994A (en) * | 2013-07-25 | 2013-12-18 | 国家电网公司 | Control method suitable for multiple-seat 500kV transformer substation remote-control transmission |
| CN107607810A (en) * | 2017-09-01 | 2018-01-19 | 中铁电气化局集团有限公司 | A kind of rail traction supply current Distribution Test system |
| CN111194411A (en) * | 2017-10-30 | 2020-05-22 | 伊顿智能动力有限公司 | Method and apparatus for measuring expected short circuit current |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20121107 |
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Effective date of registration: 20121107 Address after: 710054 No. 308 Youyi East Road, Shaanxi, Xi'an Applicant after: Shaanxi Electric Power Research Institute Applicant after: State Grid Corporation of China Address before: 710054 No. 308 Youyi East Road, Shaanxi, Xi'an Applicant before: Shaanxi Electric Power Research Institute |
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Application publication date: 20111221 |