CN203312816U - Shunt reactor compensation circuit for substation - Google Patents
Shunt reactor compensation circuit for substation Download PDFInfo
- Publication number
- CN203312816U CN203312816U CN2013203076709U CN201320307670U CN203312816U CN 203312816 U CN203312816 U CN 203312816U CN 2013203076709 U CN2013203076709 U CN 2013203076709U CN 201320307670 U CN201320307670 U CN 201320307670U CN 203312816 U CN203312816 U CN 203312816U
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- Prior art keywords
- shunt reactor
- switch
- turn
- lightning arrester
- circuit
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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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Abstract
The utility model discloses a shunt reactor compensation circuit for a substation. The compensation circuit comprises a non-load busbar which is connected with a first switch and a second switch by circuits. The first switch is connected with one end of a shunt reactor through a first cable, and the other end of the shunt reactor is three-phase short-circuited to be a neutral point. The shunt reactor is connected with a turn-to-turn lightning arrester in parallel. One end of the turn-to-turn lightning arrester is connected with a lightning arrester by circuits, and the other end of the lightning arrester is grounded. The second switch is connected with a capacitance-resistance absorber through a second cable by circuits, and the other end of the capacitance-resistance absorber is grounded. According to the shunt reactor compensation circuit provided by the utility model, the capacitance-resistance absorber is added on the side of the non-load busbar, and the reactor is connected with the turn-to-turn lightning arrester in parallel, so that the over-voltage on the busbar side and the load side during the switching of the shunt reactor can be reduced simultaneously, thereby protecting the safety of the shunt reactor equipment and system.
Description
Technical field
The utility model relates to a kind of compensation circuit, relates in particular to a kind of shunt reactor compensation circuit of transformer station.
Background technology
For regulation voltage and idle, it for the 110kV outlet, is the 220kV transformer station of cable, electrical network is generally at 35kV side configuration shunt reactor at present, fling-cut switch equipment generally adopts vacuum circuit-breaker, be arranged in switch gear room, and shunt reactor (as oil-immersed electric reactor, dry-type air-core reactor etc.), being arranged on open air, fling-cut switch equipment is connected with shunt reactor by long cable.
Vacuum circuit-breaker cut-offs and during the small inductor load such as anti-, first open and there will be mutually damming in various degree, make load-side occur that overvoltage causes first opening resume combustion occurs mutually, due to continuous resume combustion and pass through Coupling Between Phases, the equivalence that causes rear two-phase is dammed, make load-side more serious overvoltage occur, cause and anti-breakdown between adjacent turns such as even burns at the fault.If system is uncharge aircraft carrier line, because the bus bar side direct-to-ground capacitance is less, bus bar side is shaken, serious overvoltage appears, cause that bus bar side institute loss on transmission is ruined or high-voltage wire iron-melting fusing, bus are pressed to uprise and pressed fuse failure, the fault such as bus direct short-circuit even, have a strong impact on 35kV anti-normal operation and system safety.
The utility model content
For addressing the above problem; the purpose of this utility model is to provide a kind of shunt reactor compensation circuit of transformer station; by the empty bus bar side of system, increase rc absorber, reactor two ends turn-to-turn lightning arrester in parallel; the overvoltage of bus and load-side in the time of can reducing simultaneously the shunt reactor switching, protection shunt reactor equipment and system safety.
The utility model is the purpose that reaches above-mentioned, and the utility model adopts following technical scheme:
A kind of shunt reactor compensation circuit of transformer station, comprise the aircraft carrier line, and described aircraft carrier line is connected with the first switch, second switch circuit respectively; Wherein said the first switch is connected with shunt reactor one end by the first cable, and described shunt reactor other end three-phase short circuit is neutral point; Described shunt reactor is in parallel with the turn-to-turn lightning arrester, and an end of described turn-to-turn lightning arrester is connected with the lightning arrester circuit, the other end ground connection of described lightning arrester; Described second switch is connected with the rc absorber circuit by the second cable, the other end ground connection of described rc absorber.
Described the first switch is the first switch of vacuum circuit-breaker or the first switch of SF6 circuit breaker.
Described second switch is the second switch of vacuum circuit-breaker or the second switch of SF6 circuit breaker.
Described rc absorber comprises resistance, electric capacity, and described resistance one end is connected with second switch by the second cable, and the described resistance other end is connected with electric capacity; The other end ground connection of described electric capacity.
Described resistance is the resistance of 10 Ω-100 Ω, and described electric capacity is the electric capacity of 0.2 μ F-0.8 μ F.
The beneficial effects of the utility model are: the utility model provides a kind of shunt reactor compensation circuit of transformer station, enters rc absorber at system aircraft carrier line side joint, increases the system direct-to-ground capacitance; The turn-to-turn lightning arrester in parallel at the shunt reactor two ends, absorb the turn-to-turn overvoltage of shunt reactor, thus the overvoltage of bus and load-side while reducing the shunt reactor switching, protection shunt reactor equipment and system safety.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment 1
As shown in Figure 1, the shunt reactor compensation circuit of a kind of transformer station that the present embodiment provides, comprise aircraft carrier line 1, and described aircraft carrier line 1 is connected with the first switch 2 of vacuum circuit-breaker, second switch 7 circuits of vacuum circuit-breaker respectively; The first switch 2 of wherein said vacuum circuit-breaker is connected with shunt reactor 4 one ends by the first cable 3, and described shunt reactor 4 other end three-phase short circuits are neutral point; Described shunt reactor 4 is in parallel with turn-to-turn lightning arrester 6, and an end of described turn-to-turn lightning arrester 6 is connected with lightning arrester 5 circuits, the other end ground connection of described lightning arrester 5; The second switch 7 of described vacuum circuit-breaker is connected with rc absorber 9 circuits by the second cable 8, the other end ground connection of described rc absorber 9.
Described rc absorber 9 comprises the electric capacity 11 of resistance 10, the 0.2 μ F of 20 Ω, and resistance 10 1 ends of described 20 Ω are connected with the second switch 7 of vacuum circuit-breaker by the second cable 8, and resistance 10 other ends of described 20 Ω are connected with the electric capacity 11 of 0.2 μ F; The other end ground connection of the electric capacity 11 of described 0.2 μ F.
Bus is aircraft carrier line 1, and namely it is not with outlet or zero load.Described turn-to-turn lightning arrester 6 plays the effect of turn-to-turn overvoltage protection.For the 35kV system busbar, its parameter is: continuous operating voltage: 28kV; Lightning arrester rated voltage: 35 kV; Direct current 1mA voltage: 48 kV; Switching impulse current residual voltage 30/60 μ s:70 kV; Lightning impulse current residual voltage: 90 kV; Rectangular impulse current tolerance 2ms:800A.
A kind of compensation method of shunt reactor compensation circuit of transformer station, comprise the steps:
1) when transformer station load lighter, system voltage is higher, needs to drop into perception idle when carrying out reactive power compensation or regulation voltage, first switch 2 that at first closes, put shunt reactor 4 into operation; Now second switch 7 is in off-state, and namely rc absorber 9 is in state out of service.
2) increase when transformer station load, system voltage reduces, and needs excision perceptual when idle, the second switch 7 that at first closes, and rc absorber 9 puts into operation; Then disconnect the first switch 2, shunt reactor 4 is out of service; Then disconnect second switch 7, make rc absorber 9 out of service.Due to shunt reactor 4 when out of service, aircraft carrier line 1 side with rc absorber 9 to increase the system direct-to-ground capacitance, and shunt reactor 4 two ends are parallel with turn-to-turn lightning arrester 6 to absorb the turn-to-turn overvoltage, thereby can effectively reduce the overvoltage of shunt reactor 4 switching space-time buses 1 and load-side.
The shunt reactor compensation circuit of the described a kind of transformer station of the present embodiment, enter rc absorber at the system busbar side joint, increases the system direct-to-ground capacitance; The turn-to-turn lightning arrester in parallel at the shunt reactor two ends, absorb the turn-to-turn overvoltage of shunt reactor, thus the overvoltage of bus and load-side while reducing the shunt reactor switching, protection shunt reactor equipment and system safety.
Embodiment 2
As shown in Figure 1, the shunt reactor compensation circuit of a kind of transformer station that the present embodiment provides, comprise aircraft carrier line 1, and described aircraft carrier line 1 is connected with the first switch 2 of SF6 circuit breaker, second switch 7 circuits of SF6 circuit breaker respectively; The first switch 2 of wherein said SF6 circuit breaker is connected with shunt reactor 4 one ends by the first cable 3, and described shunt reactor 4 other end three-phase short circuits are neutral point; Described shunt reactor 4 is in parallel with turn-to-turn lightning arrester 6, and an end of described turn-to-turn lightning arrester 6 is connected with lightning arrester 5 circuits, the other end ground connection of described lightning arrester 5; The second switch 7 of described SF6 circuit breaker is connected with rc absorber 9 circuits by the second cable 8, the other end ground connection of described rc absorber 9.
Described rc absorber 9 comprises the electric capacity 11 of resistance 10, the 0.6 μ F of 50 Ω, and resistance 10 1 ends of described 50 Ω are connected with the second switch 7 of SF6 circuit breaker by the second cable 8, and resistance 10 other ends of described 50 Ω are connected with the electric capacity 11 of 0.6 μ F; The other end ground connection of the electric capacity 11 of described 0.6 μ F.
Bus 1 is the aircraft carrier line, and namely it is not with outlet or zero load.Described turn-to-turn lightning arrester 6 plays the effect of turn-to-turn overvoltage protection.For the 35kV system busbar, its parameter is: continuous operating voltage: 28kV; Lightning arrester rated voltage: 35 kV; Direct current 1mA voltage: 48 kV; Switching impulse current residual voltage 30/60 μ s:70 kV; Lightning impulse current residual voltage: 90 kV; Rectangular impulse current tolerance 2ms:800A.
A kind of compensation method of shunt reactor compensation circuit of transformer station, comprise the steps:
1) when transformer station load lighter, system voltage is higher, needs to drop into perception idle when carrying out reactive power compensation or regulation voltage, first switch 2 that at first closes, put shunt reactor 4 into operation; Now second switch 7 is in off-state, and namely rc absorber 9 is in state out of service.
2) increase when transformer station load, system voltage reduces, and needs excision perceptual when idle, the second switch 7 that at first closes, and rc absorber 9 puts into operation; Then disconnect the first switch 2, shunt reactor 4 is out of service; Then disconnect second switch 7, make rc absorber 9 out of service.Due to shunt reactor 4 when out of service, aircraft carrier line 1 side with rc absorber 9 to increase the system direct-to-ground capacitance, and shunt reactor 4 two ends are parallel with turn-to-turn lightning arrester 6 to absorb the turn-to-turn overvoltage, thereby can effectively reduce the overvoltage of shunt reactor 4 switching space-time buses 1 and load-side.
The shunt reactor compensation circuit of the described a kind of transformer station of the present embodiment, enter rc absorber at the system busbar side joint, increases the system direct-to-ground capacitance; The turn-to-turn lightning arrester in parallel at the shunt reactor two ends, absorb the turn-to-turn overvoltage of shunt reactor, thus the overvoltage of bus and load-side while reducing the shunt reactor switching, protection shunt reactor equipment and system safety.
Claims (5)
1. the shunt reactor compensation circuit of a transformer station, it is characterized in that: comprise aircraft carrier line (1), described aircraft carrier line (1) is connected with the first switch (2), second switch (7) circuit respectively; Wherein said the first switch (2) is connected with shunt reactor (4) one ends by the first cable (3), and described shunt reactor (4) other end three-phase short circuit is neutral point; Described shunt reactor (4) is in parallel with turn-to-turn lightning arrester (6), and an end of described turn-to-turn lightning arrester (6) is connected with lightning arrester (5) circuit, the other end ground connection of described lightning arrester (5); Described second switch (7) is connected with rc absorber (9) circuit by the second cable (8), the other end ground connection of described rc absorber (9).
2. the shunt reactor compensation circuit of a kind of transformer station according to claim 1, it is characterized in that: described the first switch (2) is the first switch of the first switch of vacuum circuit-breaker or SF6 circuit breaker.
3. the shunt reactor compensation circuit of a kind of transformer station according to claim 1, it is characterized in that: described second switch (7) is the second switch of the second switch of vacuum circuit-breaker or SF6 circuit breaker.
4. the shunt reactor compensation circuit of a kind of transformer station according to claim 1, it is characterized in that: described rc absorber (9) comprises resistance, electric capacity, described resistance one end is connected with second switch (7) by the second cable (8), and the described resistance other end is connected with electric capacity; The other end ground connection of described electric capacity.
5. the shunt reactor compensation circuit of a kind of transformer station according to claim 4, it is characterized in that: described resistance is the resistance (10) of 10 Ω-100 Ω, described electric capacity is the electric capacity (11) of 0.2 μ F-0.8 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203076709U CN203312816U (en) | 2013-05-31 | 2013-05-31 | Shunt reactor compensation circuit for substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203076709U CN203312816U (en) | 2013-05-31 | 2013-05-31 | Shunt reactor compensation circuit for substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312816U true CN203312816U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203076709U Expired - Lifetime CN203312816U (en) | 2013-05-31 | 2013-05-31 | Shunt reactor compensation circuit for substation |
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| Country | Link |
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| CN (1) | CN203312816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280819A (en) * | 2013-05-31 | 2013-09-04 | 国家电网公司 | Paralleling reactor compensation loop of transformer substation and compensation method of paralleling reactor compensation loop of transformer substation |
-
2013
- 2013-05-31 CN CN2013203076709U patent/CN203312816U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280819A (en) * | 2013-05-31 | 2013-09-04 | 国家电网公司 | Paralleling reactor compensation loop of transformer substation and compensation method of paralleling reactor compensation loop of transformer substation |
| CN103280819B (en) * | 2013-05-31 | 2014-12-03 | 国家电网公司 | Paralleling reactor compensation loop of transformer substation and compensation method of paralleling reactor compensation loop of transformer substation |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |