CN103280802B - Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit - Google Patents
Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit Download PDFInfo
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- CN103280802B CN103280802B CN201310211672.2A CN201310211672A CN103280802B CN 103280802 B CN103280802 B CN 103280802B CN 201310211672 A CN201310211672 A CN 201310211672A CN 103280802 B CN103280802 B CN 103280802B
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- switching
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007935 neutral effect Effects 0.000 claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 238000012546 transfer Methods 0.000 claims description 8
- 230000001052 transient effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000032767 Device breakage Diseases 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention discloses a paralleling reactor operation overvoltage managing circuit and a managing method of the paralleling reactor operation overvoltage managing circuit. The paralleling reactor operation overvoltage managing circuit comprises a bus which is provided with a first switch. The first switch is connected with a paralleling reactor through a cable. The paralleling reactor is connected with one end of a second switch in a circuited mode. The other end of the second switch undergoes three-phase short circuit and is a neutral point. The paralleling reactor is connected with one end of an arrester between the paralleling reactor and the second switch. The other end of the arrester is connected to the ground. According to the paralleling reactor operation overvoltage managing circuit and the managing method of the paralleling reactor operation overvoltage managing circuit, the first switch is arranged to protect switch-off and the second switch is used for carrying out normal switching. The aim of managing operation overvoltage is achieved by hindering continuous development of restriking of a first open phase. The paralleling reactor operation overvoltage managing circuit and the managing method of the paralleling reactor operation overvoltage managing circuit are especially effective in managing switching of an empty bus and threats posed by the paralleling reactor operation overvoltage to the bus.
Description
Technical field
The present invention relates to a kind of shunt reactor switching overvoltage and administer loop and administering method thereof, belong to electric power system defeated change distribution technique field.
Background technology
For regulation voltage and idle, China's electrical network is generally at 220kV transformer station 35kV side configuration shunt reactor, and adopt vacuum circuit-breaker switching, shunt reactor is connected by cable with vacuum circuit-breaker.
When vacuum circuit-breaker cut-offs 35kV isolated neutral system shunt reactor, due to freely shaking of load-side, first open the phase fracture recovery voltage rate of climb when normally cut-offfing and be far longer than arc control device fracture dielectric strength growth rate, within the overwhelming majority arcing time, first open and all generation resume combustion is punctured mutually.
First open after there is resume combustion mutually, owing to there is overvoltage effect, resume combustion is recurred, intensity constantly strengthens, the transient current that resume combustion causes due to three alternate interaction couplings be added to after on biphase current, cause rear biphase current equivalence to dam, cause strong equivalent cut-off overvoltage, cause the Continuous Breakdown of circuit breaker three-phase fracture, affect circuit breaker both sides all devices.
Simulation Evaluation shows, vacuum circuit-breaker cut-offs 35kV shunt reactor switching overvoltage, and relatively overvoltage is at about 100kV in reactor side, and alternate overvoltage is at about 200 kV, and reactor turn-to-turn overvoltage is at about 150 kV; When system is the aircraft carrier line without circuit, relatively overvoltage is at about 100kV for bus bar side, and alternate overvoltage is at about 180 kV.
Field measurement shows, vacuum circuit-breaker cut-offs 35kV shunt reactor, first opens and mutually about 90% there will be resume combustion, and about 80% shows as and first opens mutually continuously resume combustion → rear two equivalent and dam, and causes strong overvoltage.First opening that continuously resume combustion → rear two equivalent are dammed mutually is that vacuum circuit-breaker cut-offs the topmost overvoltage form of expression of 35kV shunt reactor, all can cause reactor side lightning arrestor movement, be and the root of anti-switching overvoltage accident or exception.When system is the aircraft carrier line without circuit, because bus bar side system direct-to-ground capacitance is very little, the Continuous Breakdown of circuit breaker produces strong impact to bus bar side simultaneously.
Actual motion shows, vacuum circuit-breaker cut-offs 35kV shunt reactor switching overvoltage phenomenon ubiquity, shunt reactor turn-to-turn short circuit is frequently caused to damage, and aircraft carrier line cut-offs and resists typical faults such as causing that bus bar side institute loss on transmission is ruined, especially to aircraft carrier line switching and anti-bus bar side forms special risk, have a strong impact on 35kV and the normal operation of anti-device and system safety, in the urgent need to administering.
Actual measurement and assessment show, conventional vacuum circuit breaker performance has been in mature and stable, and the resume combustion phenomenon of cut-offfing 35kV shunt reactor is unavoidable.The conventional administering method such as reactor side installing RC rc absorber, overvoltage protection device adopted all is not enough to effectively to administer vacuum circuit-breaker and cut-offs 35kV shunt reactor switching overvoltage.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of shunt reactor switching overvoltage to administer loop and administering method thereof, its first switch arranged is born protection and is cut-off, and second switch bears normal switching; First opened the continuous development of phase resume combustion by containment, realize the object of administering switching overvoltage, effective especially for the threat of bus bar side to improvement aircraft carrier line switching shunt reactor switching overvoltage.
The present invention reaches above-mentioned object, and the present invention adopts following technical scheme:
A kind of shunt reactor switching overvoltage administers loop, comprises bus, described bus is provided with the first switch; Described first switch is connected with shunt reactor by cable, and described shunt reactor is connected with second switch one end line, and the other end three-phase short circuit of described second switch is as neutral point; Described shunt reactor is connected with lightning arrester one end with between second switch, and described lightning arrester other end ground connection.
Described bus is aircraft carrier line.
Described a kind of shunt reactor switching overvoltage administers the administering method in loop, comprises the steps: first the first switch combined floodgate power transmission; When the normal switching of needs, by the neutral point side switching of second switch at shunt reactor; First open when cut-offfing and only occur 1 time mutually or all transfer power frequency continued flow to after resume combustion for several times, normally cut-off after first opening phase transfer, the equivalence being difficult to the continuous resume combustion and rear two-phase first opening phase is dammed, overvoltage evolution is contained, in shunt reactor and the only lower switching overvoltage of neutral point side, in bus bar side because shunt reactor is to the blocking action of high frequency transient, overvoltage can be ignored, thus realizes the object of administering shunt reactor switching overvoltage.
Beneficial effect of the present invention is: the invention provides a kind of shunt reactor switching overvoltage and administer loop and administering method thereof, and its first switch arranged is born protection and cut-off, and second switch bears normal switching, by adopting circuit breaker in the method for reactor neutral point side switching, change system---circuit breaker---reactor transient state loop characteristic when shunt reactor interrupting process circuit breaker punctures, realization develops into power frequency continued flow after first opening phase resume combustion, normally cut-off after first opening phase transfer, block the initiation first opening the continuous development of phase resume combustion phenomenon and rear two equivalent and dam, realize administering and the object of anti-switching overvoltage, thoroughly can eliminate aircraft carrier line switching shunt reactor switching overvoltage to the threat of bus bar side, the normal operation of effective guarantee system and parallel reactor device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of shunt reactor switching overvoltage that the present embodiment provides administers loop, comprises aircraft carrier line 1, described aircraft carrier line 1 is provided with the first switch 2; Described first switch 2 is connected with shunt reactor 4 by cable 3, and described shunt reactor 4 is connected with second switch 5 one end line, and the other end three-phase short circuit of described second switch 5 is as neutral point; Described shunt reactor 4 is connected with lightning arrester 6 one end with between second switch 5, and described lightning arrester 6 other end ground connection.
Described a kind of shunt reactor switching overvoltage administers the administering method in loop, comprises the steps: first the 2-in-1 lock power transmission of the first switch; When the normal switching of needs, by the neutral point side switching of second switch 5 at shunt reactor 4; First open when cut-offfing and only occur 1 time mutually or all transfer power frequency continued flow to after resume combustion for several times, normally cut-off after first opening phase transfer, the equivalence being difficult to the continuous resume combustion and rear two-phase first opening phase is dammed, overvoltage evolution is contained, in shunt reactor 4 and the only lower switching overvoltage of neutral point side, in the blocking action of bus bar side due to shunt reactor 4 pairs of high frequency transients, overvoltage can be ignored, thus realizes the object of administering shunt reactor 4 switching overvoltage.
A kind of shunt reactor switching overvoltage described in the present embodiment administers loop and administering method thereof, and its first switch arranged is born protection and cut-off, and second switch bears normal switching, by adopting circuit breaker in the method for reactor neutral point side switching, change system---circuit breaker---reactor transient state loop characteristic when shunt reactor interrupting process circuit breaker punctures, realization develops into power frequency continued flow after first opening phase resume combustion, normally cut-off after first opening phase transfer, block the initiation first opening the continuous development of phase resume combustion phenomenon and rear two equivalent and dam, realize administering and the object of anti-switching overvoltage, thoroughly can eliminate aircraft carrier line switching shunt reactor switching overvoltage to the threat of bus bar side, the normal operation of effective guarantee system and parallel reactor device.
Claims (1)
1. shunt reactor switching overvoltage administers the administering method in loop, comprises bus, described bus is provided with the first switch (2); Described first switch (2) is connected with shunt reactor (4) by cable (3), and described shunt reactor (4) is connected with second switch (5) end line, and the other end three-phase short circuit of described second switch (5) is as neutral point; Be connected with lightning arrester (6) one end between described shunt reactor (4) with second switch (5), and described lightning arrester (6) other end ground connection, described bus is aircraft carrier line (1), it is characterized in that: comprise the steps: first the first switch (2) combined floodgate power transmission; When the normal switching of needs, by the neutral point side switching of second switch (5) at shunt reactor (4); First open when cut-offfing and only occur 1 time mutually or all transfer power frequency continued flow to after resume combustion for several times, normally cut-off after first opening phase transfer, the equivalence being difficult to the continuous resume combustion and rear two-phase first opening phase is dammed, overvoltage evolution is contained, in shunt reactor (4) and the only lower switching overvoltage of neutral point side, in bus bar side because shunt reactor (4) is to the blocking action of high frequency transient, overvoltage can be ignored, thus realizes the object of administering shunt reactor (4) switching overvoltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211672.2A CN103280802B (en) | 2013-05-31 | 2013-05-31 | Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211672.2A CN103280802B (en) | 2013-05-31 | 2013-05-31 | Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit |
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| Publication Number | Publication Date |
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| CN103280802A CN103280802A (en) | 2013-09-04 |
| CN103280802B true CN103280802B (en) | 2015-03-11 |
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| CN201310211672.2A Active CN103280802B (en) | 2013-05-31 | 2013-05-31 | Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332963A (en) * | 2014-11-18 | 2015-02-04 | 句容华源电器设备有限公司 | Prevention method for switching overvoltage of vacuum breaker |
| CN105988062A (en) * | 2015-02-15 | 2016-10-05 | 国家电网公司 | Switch operation over-voltage inhibition method for impedance low-voltage ride through detection device |
| CN110474345B (en) * | 2019-08-15 | 2023-05-12 | 宁波宁变电力科技股份有限公司 | Auxiliary structure and method for reducing switching overvoltage of shunt reactor |
| CN111007308B (en) * | 2019-12-28 | 2022-02-15 | 广东电网有限责任公司电力科学研究院 | Overvoltage monitoring method, device and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202474863U (en) * | 2011-12-13 | 2012-10-03 | 上海韦欧韦滤波设备有限公司 | Low voltage filtering type dynamic reactive power compensation device |
| CN202940579U (en) * | 2012-10-19 | 2013-05-15 | 东营市河口区供电公司 | Protection device of series reactor for parallel capacitors |
| CN203312809U (en) * | 2013-05-31 | 2013-11-27 | 国家电网公司 | Operation overvoltage treating circuit for shunt reactor |
-
2013
- 2013-05-31 CN CN201310211672.2A patent/CN103280802B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202474863U (en) * | 2011-12-13 | 2012-10-03 | 上海韦欧韦滤波设备有限公司 | Low voltage filtering type dynamic reactive power compensation device |
| CN202940579U (en) * | 2012-10-19 | 2013-05-15 | 东营市河口区供电公司 | Protection device of series reactor for parallel capacitors |
| CN203312809U (en) * | 2013-05-31 | 2013-11-27 | 国家电网公司 | Operation overvoltage treating circuit for shunt reactor |
Non-Patent Citations (2)
| Title |
|---|
| 35kV空母线系统中真空断路器投切电抗器相关问题分析;陈梁金等;《高压电器》;20100930;第46卷(第9期);103-106 * |
| 真空断路器投切并联电抗器试验研究;李召家等;《广东电力》;20080831;第16卷(第4期);29-33 * |
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| CN103280802A (en) | 2013-09-04 |
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