CN203312809U - Operation overvoltage treating circuit for shunt reactor - Google Patents
Operation overvoltage treating circuit for shunt reactor Download PDFInfo
- Publication number
- CN203312809U CN203312809U CN2013203086679U CN201320308667U CN203312809U CN 203312809 U CN203312809 U CN 203312809U CN 2013203086679 U CN2013203086679 U CN 2013203086679U CN 201320308667 U CN201320308667 U CN 201320308667U CN 203312809 U CN203312809 U CN 203312809U
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- China
- Prior art keywords
- shunt reactor
- switch
- overvoltage
- switching
- reactor
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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
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- Emergency Protection Circuit Devices (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses an operation overvoltage treating circuit for a shunt reactor. The circuit comprises a bus. A first switch is mounted on the bus, and connected with the shunt reactor through a cable. The shunt reactor is connected with one end of a second switch by circuits, and the other end of the second switch is three-phase short-circuited as a neutral point. One end of a lightning arrester is interposed between and connected with the shunt reactor and the second switch, and the other end of the lightning arrester is grounded. According to the operation overvoltage treating circuit provided by the utility model, the first switch protects the connection and disconnection, and the second switch enables normal switching; and by inhibiting the continuously development of the re-arcing of the first pole, the purpose of treating operation overvoltage is achieved, and the threat of operation overvoltage on the bus side during the non-load bus switching of the shunt reactor is effectively treated.
Description
Technical field
The utility model relates to a kind of shunt reactor switching overvoltage and administers loop, belongs to the defeated change distribution technique of electric power system field.
Background technology
For regulation voltage and idle, China's electrical network generally, at the 35kV of 220kV transformer station side configuration shunt reactor, adopts the vacuum circuit-breaker switching, and 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, while normally cut-offfing, first open the phase fracture recovery voltage rate of climb and be far longer than arc control device fracture dielectric strength growth rate, in overwhelming majority arcing time scopes, first open and mutually resume combustion all will occur and puncture.
After first opening and mutually resume combustion occurring, owing to there being the overvoltage effect, resume combustion is recurred, intensity constantly strengthens, the transient current that resume combustion causes is added to due to three alternate interaction couplings on rear biphase current, causes that rear biphase current equivalence dams, and causes 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 in the 100kV left and right for the reactor side, and alternate overvoltage is in 200 kV left and right, and reactor turn-to-turn overvoltage is in 150 kV left and right; When system was the aircraft carrier line without circuit, relatively overvoltage was in the 100kV left and right for bus bar side, and alternate overvoltage is in 180 kV left and right.
Field measurement shows, vacuum circuit-breaker cut-offs the 35kV shunt reactor, first opens 90% left and right mutually and there will be resume combustion, and 80% left and right shows as and first opens resume combustion continuously → rear two equivalent mutually and dam, and causes strong overvoltage.First opening mutually that resume combustion → rear two equivalent are dammed continuously 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, is and anti-switching overvoltage accident or abnormal root.When system was the aircraft carrier line without circuit, because bus bar side system direct-to-ground capacitance is very little, the Continuous Breakdown of circuit breaker produced strong impact to bus bar side simultaneously.
Actual motion shows, vacuum circuit-breaker cut-offs 35kV shunt reactor switching overvoltage phenomenon ubiquity, frequently cause shunt reactor turn-to-turn short circuit damage, and the aircraft carrier line cut-offs and resists the typical fault such as cause that bus bar side institute loss on transmission is ruined, especially aircraft carrier line switching anti-bus bar side are formed to special risk, have a strong impact on normal operation and the system safety of 35kV anti-device, in the urgent need to administering.
The actual measurement and the assessment show, conventional vacuum circuit-breaker performance has been in mature and stable, the resume combustion phenomenon of cut-offfing the 35kV shunt reactor is unavoidable.The improvement methods such as the conventional reactor side installing RC rc absorber adopted, overvoltage protection device all are not enough to effectively administer vacuum circuit-breaker and cut-off 35kV shunt reactor switching overvoltage.
The utility model content
For addressing the above problem, the purpose of this utility model is to provide a kind of shunt reactor switching overvoltage to administer loop, and the first switch of its setting is born protection and cut-off, and second switch is born normal switching; By containment, first open the continuous development of phase resume combustion, realize administering the purpose of switching overvoltage, effective especially for the threat of bus bar side to administering aircraft carrier line switching shunt reactor switching overvoltage.
The utility model is the purpose that reaches above-mentioned, and the utility model adopts following technical scheme:
A kind of shunt reactor switching overvoltage is administered loop, comprises bus, and the first switch is installed on described bus; Described the 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; Between described shunt reactor and second switch, be connected with lightning arrester one end, and described lightning arrester other end ground connection.
Described bus is the aircraft carrier line.
The beneficial effects of the utility model are: the utility model provides a kind of shunt reactor switching overvoltage to administer loop, and the first switch of its setting is born protection and cut-off, and second switch is born normal switching, by adopting the method for circuit breaker at reactor neutral point side switching, system---circuit breaker---reactor transient state loop characteristic when change shunt reactor interrupting process circuit breaker punctures, realization develops into power frequency continued flow after first opening the phase resume combustion, after first opening phase transfer, normally cut-off, blocking-up first opens the continuous development of phase resume combustion phenomenon and the initiation that rear two equivalent are dammed, realize the purpose of improvement anti-switching overvoltage, can thoroughly eliminate the threat of aircraft carrier line switching shunt reactor switching overvoltage to bus bar side, the effectively normal operation of assurance system and parallel reactor device.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of shunt reactor switching overvoltage that the present embodiment provides is administered loop, comprises aircraft carrier line 1, and the first switch 2 is installed on described aircraft carrier line 1; Described the 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 lines, and the other end three-phase short circuit of described second switch 5 is as neutral point; Between described shunt reactor 4 and second switch 5, be connected with lightning arrester 6 one ends, and described lightning arrester 6 other end ground connection.
Described a kind of shunt reactor switching overvoltage is administered the improvement method in loop, comprises the steps: at first the first switch 2 combined floodgate power transmissions; When the normal switching of needs, by the neutral point side switching of second switch 5 at shunt reactor 4; While cut-offfing, first open only occur 1 time mutually or resume combustion for several times after all transfer power frequency continued flow to, after first opening phase transfer, normally cut-off, be difficult to first open the continuous resume combustion of phase and the equivalence of rear two-phase is dammed, the overvoltage evolution is contained, in shunt reactor 4 and neutral point side lower switching overvoltage only, in the blocking action of bus bar side due to 4 pairs of high frequency transients of shunt reactor, overvoltage can be ignored, thereby realizes administering the purpose of shunt reactor 4 switching overvoltages.
The described a kind of shunt reactor switching overvoltage of the present embodiment is administered loop, and the first switch of its setting is born protection and cut-off, and second switch is born normal switching, by adopting the method for circuit breaker at reactor neutral point side switching, system---circuit breaker---reactor transient state loop characteristic when change shunt reactor interrupting process circuit breaker punctures, realization develops into power frequency continued flow after first opening the phase resume combustion, after first opening phase transfer, normally cut-off, blocking-up first opens the continuous development of phase resume combustion phenomenon and the initiation that rear two equivalent are dammed, realize the purpose of improvement anti-switching overvoltage, can thoroughly eliminate the threat of aircraft carrier line switching shunt reactor switching overvoltage to bus bar side, the effectively normal operation of assurance system and parallel reactor device.
Claims (2)
1. a shunt reactor switching overvoltage is administered loop, it is characterized in that: comprise bus, the first switch (2) is installed on described bus; Described the 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 lines, and the other end three-phase short circuit of described second switch (5) is as neutral point; Between described shunt reactor (4) and second switch (5), be connected with lightning arrester (6) one ends, and described lightning arrester (6) other end ground connection.
2. a kind of shunt reactor switching overvoltage according to claim 1 is administered loop, and it is characterized in that: described bus is aircraft carrier line (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203086679U CN203312809U (en) | 2013-05-31 | 2013-05-31 | Operation overvoltage treating circuit for shunt reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203086679U CN203312809U (en) | 2013-05-31 | 2013-05-31 | Operation overvoltage treating circuit for shunt reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312809U true CN203312809U (en) | 2013-11-27 |
Family
ID=49618984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203086679U Expired - Lifetime CN203312809U (en) | 2013-05-31 | 2013-05-31 | Operation overvoltage treating circuit for shunt reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312809U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280802A (en) * | 2013-05-31 | 2013-09-04 | 国家电网公司 | Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit |
| CN108092282A (en) * | 2018-01-02 | 2018-05-29 | 日新电机（无锡）有限公司 | Integrated compact type high-voltage shunt reactor complexes |
| CN109004628A (en) * | 2018-07-26 | 2018-12-14 | 国网黑龙江省电力有限公司伊春供电公司 | Protect collocation structure and the guard method of shunt reactor equipment and system safety |
-
2013
- 2013-05-31 CN CN2013203086679U patent/CN203312809U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280802A (en) * | 2013-05-31 | 2013-09-04 | 国家电网公司 | Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit |
| CN103280802B (en) * | 2013-05-31 | 2015-03-11 | 国家电网公司 | Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit |
| CN108092282A (en) * | 2018-01-02 | 2018-05-29 | 日新电机（无锡）有限公司 | Integrated compact type high-voltage shunt reactor complexes |
| CN109004628A (en) * | 2018-07-26 | 2018-12-14 | 国网黑龙江省电力有限公司伊春供电公司 | Protect collocation structure and the guard method of shunt reactor equipment and system safety |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |