CN202503277U - Short-circuit current limiting device - Google Patents
Short-circuit current limiting device Download PDFInfo
- Publication number
- CN202503277U CN202503277U CN2012201134546U CN201220113454U CN202503277U CN 202503277 U CN202503277 U CN 202503277U CN 2012201134546 U CN2012201134546 U CN 2012201134546U CN 201220113454 U CN201220113454 U CN 201220113454U CN 202503277 U CN202503277 U CN 202503277U
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- circuit current
- short
- short circuit
- restraint device
- rheostat
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Abstract
The utility model relates to a short-circuit current limiting device, comprising a bypass disconnecting link, isolation disconnecting links, an electric reactor, an insulating platform, and a bypass breaker. The insulating platform and the bypass breaker are connected in parallel and then are successively connected in series with the isolation disconnecting links and the electric reactor; and the whole connection is connected in parallel with the bypass disconnecting link. Compared with the prior art, the technology employed in the utility model enables the short-circuit current limiting device to have advantages of simple structure and good economical effect and the like.
Description
Technical field
The utility model relates to a kind of electric power system and send the power transformation field, especially relates to a kind of restraint device of short circuit current.
Background technology
Along with the continuous development of electric power system, the continuous rising of generate output, the electric power system electric current that causes that is short-circuited is very big, and is very big to the harm of electric power bear.Therefore, reduce short circuit current, can reduce the extent of damage of power equipment when short circuit, improve the stability of electric power system.
Patent of invention number is: 2003101235398 " superconduction saturated core fault current limiter " proposed a kind of saturation characteristics of magnetic saturation reactor iron core of utilizing and constituted demand limiter; But this fault current limiter needs superconductor; Expensive, the superconductor unstable properties, service equipment is complicated.Patent of invention number is: 2004100802846 " a kind of fault current limiter " also proposed a kind of saturation characteristic of magnetic saturation reactor iron core of utilizing and constituted demand limiter, but the shortcoming of this demand limiter is: the complicated circuit that direct current is provided to dc coil; The effect of limiting short-circuit current is limited; Have only the effect of limiting short-circuit current, cost performance is not high or the like.Patent of invention number is: 2008101604501 " a kind of short-circuit current limiting device of magnetic saturation reactor "; 2008101592788 " short-circuit current limiting device and method "; 2011100018162 " a kind of three-phase current restraint device and method "; Various current limiting devices that differ from one another and method have been proposed.As if but these device economy are good inadequately, simple inadequately.
The utility model content
The purpose of the utility model is exactly the restraint device that a kind of short circuit current of simple in structure and good economy performance is provided in order to overcome the defective that above-mentioned prior art exists.
The purpose of the utility model can realize through following technical scheme:
A kind of restraint device of short circuit current; It is characterized in that; Comprise by-pass knife switch, isolation switch, reactor, insulated platform and bypass breaker, connect with isolation switch, reactor successively after described insulated platform and the bypass breaker parallel connection, parallelly connected with by-pass knife switch again.
Described isolation switch has two.
Described insulated platform comprises capacitor group, rheostat, damper, thyristor valve and spark gap, and described capacitor group is parallelly connected with rheostat, thyristor valve and spark gap respectively, and described damper is located between rheostat and the thyristor valve.
Described capacitor group comprises four capacitors, wherein carries out parallel connection after the series connection in twos.
Compared with prior art, the simple in structure and good economy performance of the utility model.
Description of drawings
Fig. 1 is the principle schematic of the utility model.
Among the figure: 1-spark gap, 2-insulated platform, 3-reactor, K1-by-pass knife switch, K2-first isolation switch, K3-second isolation switch, D1-bypass breaker, D2-thyristor valve, D3-damper, R1-rheostat, C-capacitor group.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1; A kind of restraint device of short circuit current; Comprise by-pass knife switch K1, isolation switch, reactor 3, insulated platform 2 and bypass breaker D1, connect with isolation switch and reactor 3 after insulated platform 2 and the bypass breaker D1 parallel connection, parallelly connected with by-pass knife switch K1 again.
Described isolation switch comprises the first isolation switch K1 and the second isolation switch K2.
Claims (4)
1. the restraint device of a short circuit current; It is characterized in that; Comprise by-pass knife switch, isolation switch, reactor, insulated platform and bypass breaker, connect with isolation switch, reactor successively after described insulated platform and the bypass breaker parallel connection, parallelly connected with by-pass knife switch again.
2. the restraint device of a kind of short circuit current according to claim 1 is characterized in that, described isolation switch has two.
3. the restraint device of a kind of short circuit current according to claim 1; It is characterized in that; Described insulated platform comprises capacitor group, rheostat, damper, thyristor valve and spark gap; Described capacitor group is parallelly connected with rheostat, thyristor valve and spark gap respectively, and described damper is located between rheostat and the thyristor valve.
4. the restraint device of a kind of short circuit current according to claim 3 is characterized in that, described capacitor group comprises four capacitors, wherein carries out parallel connection after the series connection in twos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201134546U CN202503277U (en) | 2012-03-22 | 2012-03-22 | Short-circuit current limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201134546U CN202503277U (en) | 2012-03-22 | 2012-03-22 | Short-circuit current limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202503277U true CN202503277U (en) | 2012-10-24 |
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ID=47039877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201134546U Expired - Lifetime CN202503277U (en) | 2012-03-22 | 2012-03-22 | Short-circuit current limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202503277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743069A (en) * | 2016-04-20 | 2016-07-06 | 安徽尚途电力保护设备有限公司 | Series resonance zero-loss current limiting device |
-
2012
- 2012-03-22 CN CN2012201134546U patent/CN202503277U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743069A (en) * | 2016-04-20 | 2016-07-06 | 安徽尚途电力保护设备有限公司 | Series resonance zero-loss current limiting device |
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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: 20121024 |