CN203521107U - Parallel controllable reactance device - Google Patents
Parallel controllable reactance device Download PDFInfo
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- CN203521107U CN203521107U CN201320387616.XU CN201320387616U CN203521107U CN 203521107 U CN203521107 U CN 203521107U CN 201320387616 U CN201320387616 U CN 201320387616U CN 203521107 U CN203521107 U CN 203521107U
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- iron core
- reactance device
- controllable
- assisting
- electric reactor
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- 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
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Abstract
The utility model discloses a parallel controllable reactance device which comprises a controllable electric reactor, two direct-current magnetism-assisting IGBTs and a freewheel diode. The controllable electric reactor is a direct-current magnetism-assisting electric reactor, a main iron core limb in the middle of the controllable electric reactor is divided into two parts to be wound with an upper winding and a lower winding respectively, the middle portions are intersected and connected, the two direct-current magnetism-assisting IGBTs are symmetrically connected to center taps of the two windings on the two sides, and the freewheel diode stretches across the intersected endpoint of the division windings of the iron core limb of the electric reactor. According to the parallel controllable reactance device, the saturability of an iron core is controlled by changing the conduction angles of the IGBTs in the controllable electric reactor to change the equivalent inductance of the iron core, the capacity of the controllable electric reactor can be rapidly and continuously adjusted, the optimal effect of charging power compensation of an ultra-high voltage power transmission line is achieved, and the parallel controllable reactance device has the advantages of being low in price, easy to control and reliable in work.
Description
Technical field
The utility model belongs to ultra-high-tension power transmission line reactive power compensation technology field, particularly a kind of controllable reactance device in parallel.
Background technology
Reactive balance is most important to improving the economic benefit of electrical network and improving power supply quality, and the formation of the large electrical network of superhigh pressure and load variations aggravation require a large amount of adjustable reactive power sources of response fast to adjust voltage, maintain System Reactive Power trend balance, reduce loss, improve power supply reliability.
The utility model proposes a kind of parallel controllable reactor of ultra-high-voltage line, the saturation of controlling iron core by the Trigger Angle of thyristor in change controlled reactor is to change its equivalent inductance, realize the adjusting rapidly, continuously of reactor capacity, have cheap, control simple, the advantage of reliable operation, has wide application and market prospects.
Utility model content
The purpose of this utility model is to provide a kind of controlled reactor in parallel, can regulate rapidly, continuously self capacity, realizes the effect of best extra high voltage network charge power compensation.The purpose of this utility model is realized by following technical scheme:
A controllable reactance device in parallel, is characterized in that: comprising: controlled reactor, two direct current magnetism-assisting IGBT, fly-wheel diode; Controlled reactor is direct current magnetism-assisting formula reactor, and main iron core post is divided into two in the middle of it, respectively around with upper and lower two windings, mid portion interconnection; Two direct current magnetism-assisting IGBT are connected on the centre tap of two windings in both sides symmetrically, and fly-wheel diode is across on the intersection end points at reactor division stem stem winding.
As further technical scheme, the middle part of the main iron core post of described controlled reactor is provided with a small bore section.
As concrete technical scheme, the sectional area of described small bore section be main iron core column section long-pending 1/3rd.
The beneficial effects of the utility model are: the saturation of controlling iron core by the angle of flow of IGBT in change controlled reactor is to change its equivalent inductance, can regulate rapidly, continuously reactor self capacity, realize the effect of best extra high voltage network charge power compensation, device has cheap, control simple, the advantage of reliable operation, has wide application and market prospects.
Accompanying drawing explanation
The controllable reactance device circuit figure a kind of in parallel that Fig. 1 provides for embodiment.
The schematic diagram of iron core small bore in the controllable reactance device that Fig. 2 provides for embodiment.
Schematic diagram in the magnetic structure of the controllable reactance device small bore iron core that Fig. 3 provides for embodiment and operating state during small bore core sataration.
Schematic diagram in the magnetic structure of the controllable reactance device small bore iron core that Fig. 4 provides for embodiment and operating state during small bore iron core unsaturation.
The equivalent model of small bore iron core in the magnetic structure of the controllable reactance device small bore iron core that Fig. 5 provides for embodiment and operating state.
Embodiment
As shown in Figure 1, the controllable reactance device in parallel that the present embodiment provides comprises: controlled reactor 1, two direct current magnetism-assisting IGBT2, fly-wheel diode 3.The middle main iron core post of controlled reactor 1 is divided into two, respectively around with upper and lower two windings, mid portion interconnection.In addition, there is centre tap in winding, meets two direct current magnetism-assisting IGBT2 that are arranged symmetrically with in tap, and in figure, KPa and KPb are respectively the IGBT2 that controls controlled reactor 1 direct current magnetism-assisting; Consequent direct current magnetism-assisting oneself in two split core posts is closed and to side column iron core, do not flow out.
Continuation is referring to Fig. 1, the controllable reactance device in parallel that the present embodiment provides, mid portion at four windings passes through self coupling transformation and controlled rectification, produce the consistent direct current magnetism-assisting of direction, fly-wheel diode 3 is across on the intersection end points at reactor division stem stem winding, the afterflow task when completing IGBT and turn-offing.
The middle part of the main iron core post of controlled reactor 1 be provided with a small bore (sectional area be main iron core column section long-pending 1/3rd) section, to reach degree of depth saturation condition when magnetic flux is larger.By the angle of flow of adjusting thyristor, can regulate the saturation of core of reactor, realize the object of smooth adjustment reactor equivalent inductance.As shown in Figure 2, in figure, Ayt is small bore core section area, and Ay is core section area, and lt is small bore core length.Shown in Fig. 3, Fig. 4 and Fig. 5, in figure, F is magnetic potential, and φ is magnetic flux, and Rq is air reluctance, and Rt is iron core magnetic resistance.
Claims (3)
1. a controllable reactance device in parallel, is characterized in that: comprising: controlled reactor, two direct current magnetism-assisting IGBT, fly-wheel diode; Controlled reactor is direct current magnetism-assisting formula reactor, and main iron core post is divided into two in the middle of it, respectively around with upper and lower two windings, mid portion interconnection; Two direct current magnetism-assisting IGBT are connected on the centre tap of two windings in both sides symmetrically, and fly-wheel diode is across on the intersection end points at reactor division stem stem winding.
2. controllable reactance device in parallel according to claim 1, is characterized in that: the middle part of the main iron core post of described controlled reactor is provided with a small bore section.
3. controllable reactance device in parallel according to claim 2, is characterized in that: the sectional area of described small bore section be main iron core column section long-pending 1/3rd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320387616.XU CN203521107U (en) | 2013-06-30 | 2013-06-30 | Parallel controllable reactance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320387616.XU CN203521107U (en) | 2013-06-30 | 2013-06-30 | Parallel controllable reactance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521107U true CN203521107U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320387616.XU Expired - Fee Related CN203521107U (en) | 2013-06-30 | 2013-06-30 | Parallel controllable reactance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203521107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562984A (en) * | 2020-11-23 | 2021-03-26 | 国网浙江省电力有限公司杭州供电公司 | Curve magnetic valve structure, curve magnetic valve type controllable reactor and application |
-
2013
- 2013-06-30 CN CN201320387616.XU patent/CN203521107U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562984A (en) * | 2020-11-23 | 2021-03-26 | 国网浙江省电力有限公司杭州供电公司 | Curve magnetic valve structure, curve magnetic valve type controllable reactor and application |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20190630 |