CN203312750U - Lightning arrester for turn-to-turn over-voltage protection of shunt reactor - Google Patents
Lightning arrester for turn-to-turn over-voltage protection of shunt reactor Download PDFInfo
- Publication number
- CN203312750U CN203312750U CN2013203078475U CN201320307847U CN203312750U CN 203312750 U CN203312750 U CN 203312750U CN 2013203078475 U CN2013203078475 U CN 2013203078475U CN 201320307847 U CN201320307847 U CN 201320307847U CN 203312750 U CN203312750 U CN 203312750U
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- lightning arrester
- turn
- shunt reactor
- arrester body
- post insulator
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Abstract
The utility model discloses a lightning arrester for turn-to-turn over-voltage protection of a shunt reactor. The lightning arrester comprises a lightning arrester body, wherein the lightning arrester body is connected with a supporting insulator; and a counter is mounted at the joint of the lightning arrester body and the supporting insulator, and is connected with the lightning arrester body and the supporting insulator. According to the utility model, the lightning arrester can significantly lower the level of turn-to-turn over-voltage of the shunt reactor, thereby effectively ensuring the safety of the shunt reactor working in the condition of over-voltage.
Description
Technical field
The utility model relates to a kind of lightning arrester, relates in particular to a kind of shunt reactor turn-to-turn overvoltage protection lightning arrester.
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.
The utility model content
For addressing the above problem, the purpose of this utility model is to provide a kind of shunt reactor turn-to-turn overvoltage protection lightning arrester, significantly reduces shunt reactor turn-to-turn overvoltage level, the safety under effective guarantee 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 turn-to-turn overvoltage protection lightning arrester, comprise lightning arrester body, and described lightning arrester body is connected with post insulator; The link of described lightning arrester body and post insulator is equipped with counter, and described counter is connected with lightning arrester body, post insulator circuit respectively.
Described lightning arrester body is the zero-clearance zinc oxide lightning arrester body.
Described post insulator is the 35KV post insulator.
The beneficial effects of the utility model are: the utility model provides a kind of shunt reactor turn-to-turn overvoltage protection lightning arrester; the reactor two ends turn-to-turn Overvoltage Amplitude caused in 35kV shunt reactor interrupting process switching overvoltage is restricted to the 75kV left and right from 150 kV left and right; significantly reduce shunt reactor turn-to-turn overvoltage level, the safety under effective guarantee shunt reactor switching overvoltage.
The accompanying drawing explanation
Fig. 1 is the structural representation of utility model.
Embodiment
As shown in Figure 1, a kind of shunt reactor turn-to-turn overvoltage protection lightning arrester that the present embodiment provides, comprise lightning arrester body, and described lightning arrester body is connected with post insulator; The link of described lightning arrester body and post insulator is equipped with counter, and described counter is connected with lightning arrester body, post insulator circuit respectively.Described lightning arrester body is zero-clearance zinc oxide lightning arrester body 1.Described post insulator is 35KV post insulator 2.
Described a kind of shunt reactor turn-to-turn overvoltage protection installation method of lightning arrester; comprise the following steps: shunt reactor at first is installed in series on circuit breaker; then the top of zero-clearance zinc oxide lightning arrester body 1 is connected with the side of shunt reactor, then the link of zero-clearance zinc oxide lightning arrester body 1 and 35KV post insulator 2 is connected with the neutral end of shunt reactor.
The specified technical parameter of described lightning arrester is as follows: 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.
The described a kind of shunt reactor turn-to-turn overvoltage protection lightning arrester of the present embodiment; the reactor two ends turn-to-turn Overvoltage Amplitude caused in 35kV shunt reactor interrupting process switching overvoltage is restricted to the 75kV left and right from 150 kV left and right; significantly reduce shunt reactor turn-to-turn overvoltage level, the safety under effective guarantee shunt reactor switching overvoltage.
Claims (3)
1. shunt reactor turn-to-turn overvoltage protection lightning arrester, it is characterized in that: comprise lightning arrester body, described lightning arrester body is connected with post insulator; The link of described lightning arrester body and post insulator is equipped with counter (3), and described counter (3) is connected with lightning arrester body, post insulator circuit respectively.
2. a kind of shunt reactor turn-to-turn overvoltage protection lightning arrester according to claim 1, it is characterized in that: described lightning arrester body is zero-clearance zinc oxide lightning arrester body (1).
3. a kind of shunt reactor turn-to-turn overvoltage protection lightning arrester according to claim 1, it is characterized in that: described post insulator is 35KV post insulator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203078475U CN203312750U (en) | 2013-05-31 | 2013-05-31 | Lightning arrester for turn-to-turn over-voltage protection of shunt reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203078475U CN203312750U (en) | 2013-05-31 | 2013-05-31 | Lightning arrester for turn-to-turn over-voltage protection of shunt reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312750U true CN203312750U (en) | 2013-11-27 |
Family
ID=49618925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203078475U Expired - Lifetime CN203312750U (en) | 2013-05-31 | 2013-05-31 | Lightning arrester for turn-to-turn over-voltage protection of shunt reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312750U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269051A (en) * | 2013-05-31 | 2013-08-28 | 国家电网公司 | Lightning arrester for shunt reactor interturn over voltage protection and installing method of lightning arrester |
| CN103743939A (en) * | 2013-12-20 | 2014-04-23 | 保定天威保变电气股份有限公司 | Dry-type smoothing reactor arrester light insulator counter lead-out structure |
| CN106205899A (en) * | 2016-07-15 | 2016-12-07 | 江苏远航电缆附件有限公司 | A kind of band gap compound needle type insulator |
-
2013
- 2013-05-31 CN CN2013203078475U patent/CN203312750U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269051A (en) * | 2013-05-31 | 2013-08-28 | 国家电网公司 | Lightning arrester for shunt reactor interturn over voltage protection and installing method of lightning arrester |
| CN103743939A (en) * | 2013-12-20 | 2014-04-23 | 保定天威保变电气股份有限公司 | Dry-type smoothing reactor arrester light insulator counter lead-out structure |
| CN103743939B (en) * | 2013-12-20 | 2016-05-11 | 保定天威保变电气股份有限公司 | Dry smoothing reactor arrester light insulator counter deriving structure |
| CN106205899A (en) * | 2016-07-15 | 2016-12-07 | 江苏远航电缆附件有限公司 | A kind of band gap compound needle type insulator |
| CN106205899B (en) * | 2016-07-15 | 2017-07-28 | 江苏远航电缆附件有限公司 | A kind of band gap compound needle type insulator |
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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 |