CN201820574U - Overcurrent protecting reactor for static volt-ampere reactive generator system - Google Patents
Overcurrent protecting reactor for static volt-ampere reactive generator system Download PDFInfo
- Publication number
- CN201820574U CN201820574U CN2010205346234U CN201020534623U CN201820574U CN 201820574 U CN201820574 U CN 201820574U CN 2010205346234 U CN2010205346234 U CN 2010205346234U CN 201020534623 U CN201020534623 U CN 201020534623U CN 201820574 U CN201820574 U CN 201820574U
- Authority
- CN
- China
- Prior art keywords
- reactor
- iron core
- overcurrent
- generator system
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an overcurrent protecting reactor for a static volt-ampere reactive generator system, which comprises a left iron core, a middle iron core and a right iron core. The left iron core is provided with an air gap, a main winding is sleeved on the middle iron core, one end of the main winding is connected with a power source while the other end of the main winding is connected with a load, and a control winding which is arranged on a side post of the right iron core is provided with a switch. An adjusting reactor is combined with an overcurrent reactor so that the overcurrent protecting reactor is high in protection speed, and protection effect of the reactor can not be affected even when an electronic element is damaged. Compared with a general reactor, the overcurrent protecting reactor is provided with the additional control winding and a gap-less high-magnetic conducting passage. When the static volt-ampere reactive generator system is normal operation, the reactor adjusts system current in low inductance mode; and when overcurrent failure of a circuit occurs, the reactor limits current of the main circuit in high inductance mode.
Description
Technical field
The utility model relates to a kind of static reacance generator (SVG) overcurrent protection reactor that is used for.
Background technology
Static reacance generator (SVG) system is a kind of electric network reactive-load automatic tracking and compensating and harmonic wave control equipment.Economic stability operation to electrical network plays a very important role.Since electric network fault, external interference, operating personnel's misoperation etc., and the SVG system failure that causes produces great short circuit current, thus damage the power electronic element in the SVG system.Can cause unnecessary economic loss like this, and may cause the SVG permanent failure, influence the stable operation of electric power system.Therefore, must effectively protect, to guarantee the stable operation of SVG system to the overcurrent of SVG system.
At present, overcurrent protection mainly is to cut off system power supply with A.C. contactor for the SVG system, and blocks two kinds of inverter pulses, and they respectively have pluses and minuses:
1, for cutting off system power supply with A.C. contactor, speed is slow, and to the power electronics protection poor effect of SVG internal system, the very difficult power electronic element of protecting is not damaged under short-circuit conditions;
2, locking pulse be the problem that can solve overcurrent protection, and speed is fast, also is the most basic protected mode, if but the overcurrent that causes owing to the power electronic element faults itself, this mode is also powerless.
Summary of the invention
Goal of the invention: the purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of static reacance generator system overcurrent protection reactor is provided, and it can effectively solve the electronic component of static reacance generator system under short-circuit conditions and damage problem.
Technical scheme: in order to solve the problems of the technologies described above, the utility model has adopted following technical scheme: a kind of static reacance generator overcurrent protection reactor, it comprises left side iron core, middle iron core and right side iron core, described left side iron core is provided with air gap, on middle iron core, be set with main winding, one termination power of main winding, a termination load; On the lateral column of right side iron core, be provided with the control winding, on the control winding, be provided with switch.
In the utility model, the cross section of described left side iron core is less than middle unshakable in one's determination, right side cross section unshakable in one's determination.
In the utility model, described left side iron core, middle iron core and right side iron core are silicon steel sheet.
Beneficial effect: static reacance generator of the present utility model overcurrent protection reactor is by the magnetic path parallel connection form, short circuit flux and reach the small inductor regulating system electric current in normal when operation, the purpose of the big current limit by inductance during overcurrent.To regulate reactor and be made in together with the overcurrent reactor, protection speed is fast, even power electronic element damages, also can not influence the protection effect; With the difference of the common reactor high magnetic conductance flux path of control winding that be many with no air gap, mainly be when system normally moves, small inductor regulating system electric current; In the time of circuit generation overcurrent fault, big inductance restriction main circuit current.
Description of drawings
Be illustrated as structural representation of the present utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model is done further explanation.
As shown in the figure; static reacance generator of the present utility model comprises left side unshakable in one's determination 1, middle unshakable in one's determination 2 and right side iron core 3 with the overcurrent protection reactor; described left side iron core 1 is provided with air gap 4; on middle unshakable in one's determination 2, be set with main winding 5; one termination power of main winding 5, a termination load is connected in the circuit; on the lateral column of right side iron core 3, be provided with control winding 6, on control winding 6, be provided with switch 7.The cross section of described left side iron core 1 is less than the cross section of middle iron core 2, right side iron core 3; And described left side iron core 1, middle iron core 2 and right side unshakable in one's determination 3 are silicon steel sheet.
Concrete operation principle is as follows:
When system's operate as normal, 6 short circuits of control winding, according to the law of electromagnetic induction, resultant flux amount in the right side iron core 3 is zero, be equivalent to right side magnetic circuit short circuit, this moment, whole reactor just was equivalent to a common reactor that has air gap, because air-gap reluctance is very big, for main circuit is exactly a very little linear inductance, makes the adjusting reactor of system and uses.
When system's generation overcurrent fault, control winding 6 open circuits on right side, the left side is with two magnetic path parallel connections in right side like this; because all being the silicon steel sheet of high magnetic permeability, the right side constitutes; magnetic resistance is very little, is exactly a very big inductance for main circuit, makes the overcurrent protection reactor of system and uses.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (2)
1. static reacance generator overcurrent protection reactor, it is characterized in that: it comprises left side (1) unshakable in one's determination, middle (2) and right side iron core (3) unshakable in one's determination, described left side iron core (1) is provided with air gap (4), on middle (2) unshakable in one's determination, be set with main winding (5), one termination power of main winding (5), a termination load; On the lateral column of right side iron core (3), be provided with control winding (6), on control winding (6), be provided with switch (7).
2. a kind of static reacance generator overcurrent protection reactor according to claim 1 is characterized in that: the cross section of described left side iron core (1) is less than the cross section of middle (2) unshakable in one's determination, right side iron core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205346234U CN201820574U (en) | 2010-09-16 | 2010-09-16 | Overcurrent protecting reactor for static volt-ampere reactive generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205346234U CN201820574U (en) | 2010-09-16 | 2010-09-16 | Overcurrent protecting reactor for static volt-ampere reactive generator system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201820574U true CN201820574U (en) | 2011-05-04 |
Family
ID=43918521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205346234U Expired - Fee Related CN201820574U (en) | 2010-09-16 | 2010-09-16 | Overcurrent protecting reactor for static volt-ampere reactive generator system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201820574U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820127A (en) * | 2012-09-04 | 2012-12-12 | 厦门振泰成科技有限公司 | Anti-direct-current magnetic core for current transformer and preparation method of current transformer with same |
| CN103280293A (en) * | 2013-06-19 | 2013-09-04 | 高海生 | Core valve type reactor |
| CN103489580A (en) * | 2013-09-25 | 2014-01-01 | 苏州康开电气有限公司 | Short-column silicon steel sheet and iron core adopting same |
| CN106449058A (en) * | 2016-09-28 | 2017-02-22 | 西安交通大学 | Short-circuit winding based vibration suppression method of iron core reactor |
-
2010
- 2010-09-16 CN CN2010205346234U patent/CN201820574U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820127A (en) * | 2012-09-04 | 2012-12-12 | 厦门振泰成科技有限公司 | Anti-direct-current magnetic core for current transformer and preparation method of current transformer with same |
| CN102820127B (en) * | 2012-09-04 | 2015-05-13 | 厦门振泰成科技有限公司 | Preparation method of current transformer of anti-direct-current magnetic core |
| CN103280293A (en) * | 2013-06-19 | 2013-09-04 | 高海生 | Core valve type reactor |
| CN103280293B (en) * | 2013-06-19 | 2015-08-19 | 高海生 | A kind of core valve type reactor |
| CN103489580A (en) * | 2013-09-25 | 2014-01-01 | 苏州康开电气有限公司 | Short-column silicon steel sheet and iron core adopting same |
| CN106449058A (en) * | 2016-09-28 | 2017-02-22 | 西安交通大学 | Short-circuit winding based vibration suppression method of iron core reactor |
| CN106449058B (en) * | 2016-09-28 | 2018-07-20 | 西安交通大学 | Iron core reactor vibration suppressing method based on short circuit winding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Abramovitz et al. | Prototyping and testing of a 15 kV/1.2 kA saturable core HTS fault current limiter | |
| CN105470911B (en) | A kind of direct current limiter | |
| Chen et al. | Reducing the fault current and overvoltage in a distribution system with distributed generation units through an active type SFCL | |
| CN201820574U (en) | Overcurrent protecting reactor for static volt-ampere reactive generator system | |
| CN102005749B (en) | Current limiting device with flexible switch characteristic and current limiting method | |
| US20170170648A1 (en) | Protective device for protecting a transformer against geomagnetically induced currents | |
| EP2983262A1 (en) | Current-limiting device | |
| Ning et al. | Analysis and reduction of magnetizing inrush current for switch-on unloaded transformer | |
| Patel | Fundamentals of transformer inrush | |
| CN204947951U (en) | A kind of generator linear resistance and nonlinear resistance mixing demagnetization circuit | |
| Jiang et al. | Research on fault current limiter based on fast switching technology | |
| Cvoric et al. | New saturable‐core fault current limiter topology with reduced core size | |
| WO2013123879A1 (en) | Method for protecting permanent magnet motor, and permanent magnet wind turbine generator set | |
| CN202424146U (en) | Ferroresonance-resistant control circuit of voltage transformer | |
| US20090273875A1 (en) | Apparatus for decreasing inrush current using SFCL and method for deciding optimal insertion resistance | |
| CN203164335U (en) | TPY current transformer transient characteristic testing circuit | |
| CN207339252U (en) | For quickly changing the transient reactance device of AC network middle impedance value | |
| CN205123273U (en) | Mine -used flameproof high pressure reactive power automatic compensation device | |
| CN204424886U (en) | A kind of three phase excitation incoming current suppression device | |
| CN203800859U (en) | Superconducting motor system | |
| CN106208006A (en) | A kind of transformator zero consumes degree of depth current-limiting method | |
| CN206225992U (en) | Wind turbines pusher side breaker and its surge protective device, Wind turbines | |
| CN204103456U (en) | A kind of magnetism elimination circuit for excitation system | |
| Yuan et al. | Design of induced power apparatus for monitoring system of dynamic increasing capacity of high-voltage transmission lines | |
| Du et al. | Design of a novel parallel circuit breakers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yan Sheng Inventor after: Yin Yuexin Inventor before: Yan Sheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YAN SHENG TO: YAN SHENG YIN YUEXIN |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20150916 |
|
| EXPY | Termination of patent right or utility model |