CN202817739U - Three-phase short-circuit fault current limiter based on IGBT - Google Patents
Three-phase short-circuit fault current limiter based on IGBT Download PDFInfo
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- CN202817739U CN202817739U CN 201220476829 CN201220476829U CN202817739U CN 202817739 U CN202817739 U CN 202817739U CN 201220476829 CN201220476829 CN 201220476829 CN 201220476829 U CN201220476829 U CN 201220476829U CN 202817739 U CN202817739 U CN 202817739U
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Abstract
Disclosed is a three-phase short-circuit fault current limiter based on an IGBT, belonging to the technical field of electric power applications. The three-phase short-circuit fault current limiter is composed of six IGBT modules, three reactors, three capacitors and three current sensors. Three IGBT modules constitute an upper bridge arm and the other three IGBT modules constitute a lower bridge arm; collectors of the three IGBT modules of the upper bridge arm are respectively three wire inlet terminals of the upper bridge arm, and emitters of the three IGBT modules of the upper bridge arm, collectors of the three IGBT modules of the lower bridge arm and one ends of the three reactors are correspondingly connected together; emitters of the three IGBT modules of the lower bridge arm are connected together; the other ends of the three reactors pass through the three current sensors respectively to be three wire outlet terminals after being connected with one ends of the three capacitors respectively; and the other ends of the three capacitors are connected together. The three-phase short-circuit fault current limiter based on the IGBT can identify a short-circuit fault and respond quickly when the short-circuit fault occurs in a power system and can be applied to power grids of various voltage grades.
Description
Technical field
The utility model relates to the short-circuit fault of power system current limiting technique.Belong to the electric power system applied technical field.
Background technology
Continuous expansion along with electric power system capacity and scale, the short circuit current of electrical power trans mission/distribution system improves constantly, short trouble is also increasing to the harm of electric power system and coupled electric equipment, short circuit current may surpass the interrupting capacity of circuit breaker, and adopting short-circuit fault current limiter is the best solution that improves the power system operation reliability.In many short-circuit fault current limiter schemes, the short-circuit fault current limiter that is used for the flexible AC transmission technology based on the electronic power switch technology is one of following mainstream development direction, such as the 7th phase of the 30th volume " Automation of Electric Systems " April in 2006 disclosed " based on the solid-state bridge type short circuit fault current limiter of IGCT ".This bridge type short circuit fault current limiter with by-pass inductor, its half-controlled bridge switching device are all selected controllable silicon or integrated gate commutated thyristor (IGCT), and its direct current current-limiting reactor volume that plays main metering function is large, and cost is high, Heavy Weight.When electrical network was short-circuited, circuit breaker Cooperation with Relay intrinsic in the control method of itself and the electric power system was complicated, and drive circuit is complicated, and cost is high, was difficult to popularize be used in the electric power system.
The utility model content
The purpose of this utility model is the above-mentioned shortcoming that overcomes existing short-circuit fault current limiter, and a kind of simple in structure, three phase short circuit fault flow restricter based on IGBT that cost is low is provided.
The three phase short circuit fault flow restricter based on IGBT of realizing the utility model purpose is made of six IGBT modules, three reactors, three capacitors and three current sensors; In described six IGBT modules by brachium pontis on three IGBT module compositions, brachium pontis under other three IGBT module compositions; The collector electrode of three IGBT modules of described upper brachium pontis is respectively three input terminals of three phase short circuit fault flow restricter; The collector electrode of the emitter of three IGBT modules of upper brachium pontis and three IGBT modules of lower brachium pontis and an end of three reactors are connected respectively the mid point of the full-bridge circuit that consists of IGBT switch brachium pontis; The emitter of three IGBT modules of lower brachium pontis links together; The other end of three reactors is three outlet terminals of three phase short circuit fault flow restricter respectively with after passing respectively three current sensors after an end of three capacitors is connected separately; The other end of three capacitors links together.
The operation principle of this three phase short circuit fault flow restricter is as follows:
Three phase short circuit fault flow restricter serial connection is connected in the three phase network.
1, when electrical network normally moves, upper brachium pontis is in conducting state, and lower brachium pontis is in off state, and short-circuit fault current limiter is in the normally operating state.
2, when electrical network is short-circuited fault, the electric current that increases suddenly in the electrical network is sent instruction by the current sensor perception by control loop, and the pulse duration of three IGBT modules in the brachium pontis in the adjusting makes its electric current that passes through be not more than set point; Three IGBT modules, reactor, capacitors consist of continuous current circuit in the lower brachium pontis.At this moment short circuit current is controlled in the setting range, reaches the purpose of grid current limiting.
If 3 electric network faults disappear, the electric current that flows through in the short-circuit fault current limiter reduces, and then short-circuit fault current limiter is returned to the operating state of normally gradually by the pulse-width modulation state.
4, when the electrical network chromic trouble, at this moment the three-phase shortcircuit relaying protection of grid side action is gone up three IGBT modules in the brachium pontis and three IGBT modules in the lower brachium pontis and all is in off state, and short-circuit fault current limiter is not worked.
Major advantage of the present utility model is:
1, utilize IGBT to make switching device, when in electric power system, short trouble occurring, can identify fast, fast response, in current limliting, automatic harmonic carcellation, output waveform is sinusoidal wave.
2, the reactor in the continuous current circuit, inductance value is little, and cost is low.
3, simple, the fast response time of circuit structure, stable and reliable operation.
4, range of application is wide, can be applicable in the electrical network of various electric pressures.
Below in conjunction with drawings and Examples the utility model content is described in further details.
Description of drawings
This circuit diagram based on the three phase short circuit fault flow restricter of IGBT of Fig. 1
Embodiment:
Referring to Fig. 1, this three phase short circuit fault flow restricter is by six IGBT module T1, T2, T3, T4, T5, T6; Three reactor L1, L2, L3; Three capacitor C1, C2, C3 and three current sensor H1, H2, H3 consist of; Consist of upper brachium pontis by three IGBT module T1, T3, T5 in described six IGBT modules, other three IGBT module T2, T4, T6 consist of lower brachium pontis; Three IGBT module T1 of upper brachium pontis, the collector electrode of T3, T5 are respectively input terminal A01, B01, the C01 of three phase short circuit fault flow restricter; The end of three IGBT module T2 of the emitter of T1, T3, T5 and lower brachium pontis, the collector electrode of T4, T6 and three reactor L1, L2, L3 is connected respectively mid point U, V, the W of the full-bridge circuit that consists of IGBT switch brachium pontis; Three IGBT module T2 of lower brachium pontis, the emitter of T4, T6 link together; The other end of L1, L2, L3 is three outlet terminal A02, B02, the C02 of three phase short circuit fault flow restricter respectively with after passing respectively three current sensor H1, H2, H3 after the end of three capacitor C1, C2, C3 is connected separately; The other end of C1, C2, C3 links together.
Present embodiment three phase short circuit fault flow restricter is connected in series in the electrical network that needs short circuit current limitation.
1, when electrical network normally moves, T1, T3, T5 are in conducting state in the upper brachium pontis, and T2, T4, T6 are in off state in the lower brachium pontis, and the three phase short circuit fault flow restricter is in the normally operating state.
2, when electrical network is short-circuited fault, suddenly the electric current that increases in the electrical network is by current sensor H1, H2, H3 perception, send instruction by control loop, the pulse duration of three IGBT module T1, T3, T5 in the brachium pontis makes its electric current that passes through be not more than set point in the adjusting; Three IGBT module T2, T4, T6, reactor L1, L2, L3, capacitor C1, C2, C3 consist of continuous current circuit in the lower brachium pontis.At this moment short circuit current is controlled in the setting range, reaches the purpose of grid current limiting.
If 3 electric network faults disappear, the electric current that flows through in the three phase short circuit fault flow restricter reduces, and then the three phase short circuit fault flow restricter is returned to the operating state of normally gradually by the pulse-width modulation state.
4, when the electrical network chromic trouble, three-phase shortcircuit relaying protection action, at this moment three IGBT module T2, T4, T6 going up in three IGBT module T1, T3, T5 and the lower brachium pontis in the brachium pontis are in off state, and short-circuit fault current limiter is not worked.
Claims (1)
1. the three phase short circuit fault flow restricter based on IGBT is characterized in that described three phase short circuit fault flow restricter is made of six IGBT modules, three reactors, three capacitors and three current sensors; In described six IGBT modules by brachium pontis on three IGBT module compositions, brachium pontis under other three IGBT module compositions; The collector electrode of three IGBT modules of described upper brachium pontis is respectively three input terminals of three phase short circuit fault flow restricter; The collector electrode of the emitter of three IGBT modules of upper brachium pontis and three IGBT modules of lower brachium pontis and an end of three reactors are connected respectively the mid point of the full-bridge circuit that consists of IGBT switch brachium pontis; The emitter of three IGBT modules of lower brachium pontis links together; The other end of three reactors is three outlet terminals of three phase short circuit fault flow restricter respectively with after passing respectively three current sensors after an end of three capacitors is connected separately; The other end of three capacitors links together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476829 CN202817739U (en) | 2012-09-11 | 2012-09-11 | Three-phase short-circuit fault current limiter based on IGBT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476829 CN202817739U (en) | 2012-09-11 | 2012-09-11 | Three-phase short-circuit fault current limiter based on IGBT |
Publications (1)
| Publication Number | Publication Date |
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| CN202817739U true CN202817739U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220476829 Expired - Fee Related CN202817739U (en) | 2012-09-11 | 2012-09-11 | Three-phase short-circuit fault current limiter based on IGBT |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868153A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Three-phase short-circuit failure restrictor based on IGBT (Insulated Gate Bipolar Translator) |
| CN111009881A (en) * | 2019-12-11 | 2020-04-14 | 珠海格力电器股份有限公司 | IGBT protection method and motor system |
| CN112803384A (en) * | 2020-12-31 | 2021-05-14 | 国电南瑞科技股份有限公司 | Fault current limiter suitable for low-voltage direct-current system and control method |
-
2012
- 2012-09-11 CN CN 201220476829 patent/CN202817739U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868153A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Three-phase short-circuit failure restrictor based on IGBT (Insulated Gate Bipolar Translator) |
| CN111009881A (en) * | 2019-12-11 | 2020-04-14 | 珠海格力电器股份有限公司 | IGBT protection method and motor system |
| CN112803384A (en) * | 2020-12-31 | 2021-05-14 | 国电南瑞科技股份有限公司 | Fault current limiter suitable for low-voltage direct-current system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN JIALING ELECTRIC CO., LTD. Free format text: FORMER OWNER: WU JIALIN Effective date: 20140613 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610041 CHENGDU, SICHUAN PROVINCE TO: 610207 CHENGDU, SICHUAN PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140613 Address after: The Great Wall Road, Shuangliu County town of Chengdu city of Sichuan Province, No. 29 two 610207 Patentee after: Jialing Electric Co., Ltd. Address before: 610041 Sichuan city of Chengdu province Wuhou District City Road No. 33 building 31, unit 1, No. 601 Patentee before: Wu Jialin |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jialing Electric Co., Ltd. Assignor: Wu Jialin Contract record no.: 2014510000056 Denomination of utility model: Three-phase short-circuit failure restrictor based on IGBT (Insulated Gate Bipolar Translator) Granted publication date: 20130320 License type: Exclusive License Record date: 20140603 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Jialing Electric Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20150911 |
|
| EXPY | Termination of patent right or utility model |