CN205791504U - A kind of intelligent trouble current limiter for 10KV electrical network - Google Patents
A kind of intelligent trouble current limiter for 10KV electrical network Download PDFInfo
- Publication number
- CN205791504U CN205791504U CN201620517518.7U CN201620517518U CN205791504U CN 205791504 U CN205791504 U CN 205791504U CN 201620517518 U CN201620517518 U CN 201620517518U CN 205791504 U CN205791504 U CN 205791504U
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- current
- limiting reactor
- speed switch
- solid
- voltage limiter
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Abstract
nullThis utility model provides a kind of intelligent trouble current limiter for 10KV electrical network，There is dual current-limiting protection，First heavily protection branch road is by solid-state switch GTO、Current-limiting reactor L1、Voltage limiter MOV1、Normally opened high-speed switch K1、Capacitor C in combination forms，Second heavily protection branch road is by current-limiting reactor L2、Voltage limiter MOV2、Normally closed high-speed switch K2 combines，Solid circuit breaker SSCB series connection enters main circuit，Can action in 40US，Current limliting and the effect of fast shut-off fault current is reached from main circuit，Play triple protection effect，Not only short circuit current can be restricted to reduced levels，There is operational reliability high、Operational mode can the advantage such as flexible modulation，And reduce voltage limiter MOV due to overvoltage、High temperature and cause the risk of device failure，Improve the safety and reliability of distribution line.
Description
Technical field
This utility model relates to controlling intelligent grid field, particularly relates to a kind of intelligent trouble current limiter for 10KV electrical network.
Background technology
Along with the complexity day by day of electric network composition and improving constantly of electric pressure, voltage and idle regulation rely solely on the automatic voltage regulator of electromotor and have been nowhere near, it is necessary to strengthen the ability of regulation and control of electrical network itself.At present, one of reactive power compensator being most widely used in power system is shunt reactor.The topmost effect of reactor is when system is short-circuited fault, limits transformer station's short circuit current, and inoperative under system health.But existing supertension shunt reactor majority is non-controllable, it all the time line attachment and not excise, when line failure breaking-closing operating, switching overvoltage can be produced, reactive current can cause additional electric energy loss in electrical network, even can affect other power supply unit properly functioning, reduce the economic benefit of electrical network, also do not reach the effect limiting short-circuit current.In existing market, existing minority can cut into/excise the fault current limiter of circuit, such as current-limiting apparatus based on MOV.But this type of current-limiting apparatus is during switching, MOV, owing to can increase sharply by electric current in very short time, can produce amount of heat, makes MOV voltage limiter produce high temperature, easily causes MOV to damage, not only affect current limitation effect, even can affect whole electric line safety.
Summary of the invention
This utility model to solve above technical problem, it is provided that a kind of intelligent trouble current limiter for 10KV electrical network.
nullFor solving above-mentioned technical problem，The technical solution adopted in the utility model is: a kind of intelligent trouble current limiter for 10KV electrical network，Including solid-state switch GTO、Solid circuit breaker SSCB、Current-limiting reactor L1、Voltage limiter MOV1、Normally opened high-speed switch K1、Capacitor C、Current-limiting reactor L2、Voltage limiter MOV2、Normally closed high-speed switch K2、Amperometric and controller，Described normally opened high-speed switch K1、Described current-limiting reactor L1、Described current-limiting reactor L2、Described amperometric and described solid circuit breaker SSCB are sequentially connected in series，Described solid-state switch GTO is connected in parallel on described normally opened high-speed switch K1 and the series arm two ends of described current-limiting reactor L1，Described voltage limiter MOV1 is connected in parallel on the two ends of described solid-state switch GTO，Described capacitor C is connected in parallel on the two ends of described solid-state switch GTO，Described voltage limiter MOV2 is connected in parallel on the two ends of described current-limiting reactor L2，Described normally closed high-speed switch K2 is connected in parallel on the two ends of described current-limiting reactor L2，Described controller respectively with described amperometric、Described solid-state switch GTO、Described normally opened high-speed switch K1 is connected with described normally closed high-speed switch K2.
Described amperometric model is AD8214.
This utility model has the advantage that with good effect: a kind of intelligent trouble current limiter for 10KV electrical network has dual current-limiting protection, first heavily protection branch road is by solid-state switch GTO, current-limiting reactor L1, voltage limiter MOV1, normally opened high-speed switch K1, the protection branch road of capacitor C in combination, second heavily protection branch road is by current-limiting reactor L2, voltage limiter MOV2, the protection branch road that normally closed high-speed switch K2 combines, solid circuit breaker SSCB series connection enters main circuit, can action in 40US, current limliting and the effect of fast shut-off fault current is reached from main circuit, play triple protection effect.A kind of intelligent trouble current limiter for 10KV electrical network; not only short circuit current can be restricted to reduced levels; have that operational reliability is high, operational mode can the advantage such as flexible modulation; and provide twin failure to protect; reduce voltage limiter MOV and cause the risk of device failure due to overvoltage, high temperature, improve the safety and reliability of distribution line.
Accompanying drawing explanation
Fig. 1 is the connection diagram of a kind of intelligent trouble current limiter for 10KV electrical network.
Detailed description of the invention
Below in conjunction with the accompanying drawings specific embodiment of the utility model is elaborated.
nullAs shown in Figure 1，A kind of intelligent trouble current limiter for 10KV electrical network，Including solid-state switch GTO、Solid circuit breaker SSCB、Current-limiting reactor L1、Voltage limiter MOV1、Normally opened high-speed switch K1、Capacitor C、Current-limiting reactor L2、Voltage limiter MOV2、Normally closed high-speed switch K2、Amperometric and controller，Described normally opened high-speed switch K1、Described current-limiting reactor L1、Described current-limiting reactor L2、Described amperometric and described solid circuit breaker SSCB are sequentially connected in series，Described solid-state switch GTO is connected in parallel on described normally opened high-speed switch K1 and the series arm two ends of described current-limiting reactor L1，Described voltage limiter MOV1 is connected in parallel on the two ends of described solid-state switch GTO，Described capacitor C is connected in parallel on the two ends of described solid-state switch GTO，Described voltage limiter MOV2 is connected in parallel on the two ends of described current-limiting reactor L2，Described normally closed high-speed switch K2 is connected in parallel on the two ends of described current-limiting reactor L2，Described controller respectively with described amperometric、Described solid-state switch GTO、Described normally opened high-speed switch K1 is connected with described normally closed high-speed switch K2.Described amperometric model is AD8214.
A kind of intelligent trouble current limiter for 10KV electrical network has dual current-limiting protection, first heavily protection branch road is by solid-state switch GTO, current-limiting reactor L1, voltage limiter MOV1, normally opened high-speed switch K1, the protection branch road of capacitor C in combination, second heavily protection branch road is by current-limiting reactor L2, voltage limiter MOV2, the protection branch road that normally closed high-speed switch K2 combines, its operation principle is: when under system health, solid-state switch GTO is in channel status, normally closed high-speed switch K2, it is in closure state, current-limiting reactor L1 and current-limiting reactor L2 is shorted, current-limiting reactor is zero, failure current limit branch road cuts out main circuit；During system short-circuit fault, during amperometric detection short-circuit current signal, fault-signal sends to controller, controller sends close command to normally opened high-speed switch K1, sealing in main circuit to solid-state switch GTO cut-off signal, current-limiting reactor L1 and normally closed high-speed switch K2, current-limiting reactor is L1, play series resonance metering function, fault current limiting.When amperometric detection short-circuit current signal reaches more greatly and the protection threshold value that second heavily protects branch road; second heavily protection branch road is triggered signal transmission to controller by amperometric; controller sends open command to normally closed high-speed switch K2; current-limiting reactor L2 and current-limiting reactor L1 series connection enter main circuit, fault current limiting.
Solid circuit breaker SSCB series connection enters main circuit, can action in 40US, from main circuit, reach current limliting and the effect of fast shut-off fault current, play triple protection effect.
A kind of intelligent trouble current limiter for 10KV electrical network; not only short circuit current can be restricted to reduced levels; have that operational reliability is high, operational mode can the advantage such as flexible modulation; and provide twin failure to protect; reduce voltage limiter MOV and cause the risk of device failure due to overvoltage, high temperature, improve the safety and reliability of distribution line.
Above embodiment of the present utility model is described in detail, but described content has been only preferred embodiment of the present utility model, it is impossible to be considered for limiting practical range of the present utility model.All impartial changes made according to this utility model scope and improvement etc., within all should still belonging to this patent covering scope.
Claims (2)
- null1. the intelligent trouble current limiter for 10KV electrical network，It is characterized in that: include solid-state switch GTO、Solid circuit breaker SSCB、Current-limiting reactor L1、Voltage limiter MOV1、Normally opened high-speed switch K1、Capacitor C、Current-limiting reactor L2、Voltage limiter MOV2、Normally closed high-speed switch K2、Amperometric and controller，Described normally opened high-speed switch K1、Described current-limiting reactor L1、Described current-limiting reactor L2、Described amperometric and described solid circuit breaker SSCB are sequentially connected in series，Described solid-state switch GTO is connected in parallel on described normally opened high-speed switch K1 and the series arm two ends of described current-limiting reactor L1，Described voltage limiter MOV1 is connected in parallel on the two ends of described solid-state switch GTO，Described capacitor C is connected in parallel on the two ends of described solid-state switch GTO，Described voltage limiter MOV2 is connected in parallel on the two ends of described current-limiting reactor L2，Described normally closed high-speed switch K2 is connected in parallel on the two ends of described current-limiting reactor L2，Described controller respectively with described amperometric、Described solid-state switch GTO、Described normally opened high-speed switch K1 is connected with described normally closed high-speed switch K2.
- A kind of intelligent trouble current limiter for 10KV electrical network the most according to claim 1, it is characterised in that: described amperometric model is AD8214.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620470363 | 2016-05-23 | ||
| CN2016204703636 | 2016-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205791504U true CN205791504U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620517518.7U Expired - Fee Related CN205791504U (en) | 2016-05-23 | 2016-06-01 | A kind of intelligent trouble current limiter for 10KV electrical network |
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| CN (1) | CN205791504U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711979A (en) * | 2017-01-10 | 2017-05-24 | 中国电力科学研究院 | DC power transmission system commutation failure suppression method and system |
| CN110265986A (en) * | 2019-06-04 | 2019-09-20 | 上海交通大学 | Direct current limiter topological structure suitable for flexible HVDC transmission system |
| CN110535133A (en) * | 2019-09-24 | 2019-12-03 | 全球能源互联网研究院有限公司 | A kind of flexibility multimode switching device and system |
-
2016
- 2016-06-01 CN CN201620517518.7U patent/CN205791504U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711979A (en) * | 2017-01-10 | 2017-05-24 | 中国电力科学研究院 | DC power transmission system commutation failure suppression method and system |
| CN106711979B (en) * | 2017-01-10 | 2020-04-17 | 中国电力科学研究院 | Method and system for suppressing commutation failure of direct-current power transmission system |
| CN110265986A (en) * | 2019-06-04 | 2019-09-20 | 上海交通大学 | Direct current limiter topological structure suitable for flexible HVDC transmission system |
| CN110535133A (en) * | 2019-09-24 | 2019-12-03 | 全球能源互联网研究院有限公司 | A kind of flexibility multimode switching device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20170601 |
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| CF01 | Termination of patent right due to non-payment of annual fee |