CN102842913A - Mixed switch control type medium-high voltage dynamic reactive power compensator - Google Patents
Mixed switch control type medium-high voltage dynamic reactive power compensator Download PDFInfo
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- CN102842913A CN102842913A CN2012103467740A CN201210346774A CN102842913A CN 102842913 A CN102842913 A CN 102842913A CN 2012103467740 A CN2012103467740 A CN 2012103467740A CN 201210346774 A CN201210346774 A CN 201210346774A CN 102842913 A CN102842913 A CN 102842913A
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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 invention discloses a mixed switch control type medium-high voltage dynamic reactive power compensator. On-off and operation of multiple groups of capacitors are controlled by an isolating switch, a group of thyristor switch and multiple groups of contactor switches; the isolating switch QS is connected with a power network; each group of capacitors comprises three capacitors; each phase branch of each capacitor is connected in series with an electric reactor to form a group of capacitors; each group of capacitors are connected with two three-phase contactor switches; a primary switch of each group of capacitors is connected between the isolating switch QS and the contactor switch KM0; a secondary switch of each group of capacitors is connected between the thyristor switch KT; one end of the thyristor switch KT is connected with the contactor switch KM and the other end of the thyristor switch KT is connected with the secondary switch of each group of capacitors; and a plurality of thyristors are connected in series to form the thyristor switch KT. The mixed switch control type medium-high voltage dynamic reactive power compensator has the advantages of high reliability, low cost, high efficiency and high flexibility.
Description
Technical field:
The invention belongs to the electric automatization field, be specifically related to the mesohigh dynamic reactive compensator of a kind of thyristor switch and contactless contactor control.
Technical background:
Reactive power compensation improves operation of power networks stability to improving the power equipment utilance, guarantees that supply voltage level has crucial meaning.Reactive-load compensation equipment commonly used mainly can be divided into passive and active two kinds, and inactive component adopts electric capacity or reactor as basic compensating element, based on traditional electrical theory, can adopt contactor or thyristor to control, and cost is relatively low; Active equipment can realize two-way continuous dynamic compensation, but cost is higher based on the electronic power inversion technology.
Thyristor switched capacitor (TSC) adopts thyristor as switch element; The capacitor group is carried out switch control; Belong to the passive reactive-load compensation equipment,, be widely used in the reactive power compensation of low-voltage power distribution network because of its relatively low cost and compensation effect preferably.In recent years, thyristor switched capacitor also obtains increasing application in middle pressure grade power grids, and this mode has following advantage: thyristor switch can be accomplished switch control in 20ms, switching speed is fast, is applicable to the occasion that needs frequent switch; Thyristor switch adopts the zero passage switch mode, and switch non-impact current and transient process have prolonged useful life of capacitor; (TCR) compares with thyristor-controlled reactor, and thyristor switched capacitor does not produce harmonic wave, can not cause secondary pollution to system.
But when thyristor switched capacitor was applied to the mesohigh system, because each phase switch need form switch valve group by a plurality of thyristor series connection, just brought a series of problem: each organizes the switch switch needed a large amount of thyristors, has increased system cost; The series connection operation technique of thyristor switch requires high, has increased the fault point, has reduced reliability; Thyristor switch is as the switch switch of capacitor, and it is bigger when conducting, to consume energy, and has reduced the efficient of whole device.Therefore, need a kind of device can obtain the good switch performance of thyristor switched capacitor, can reduce cost again, raise the efficiency and reliability.
Summary of the invention:
The objective of the invention is to propose a kind ofly can realize that switch does not have impact, can reduce cost again, raise the efficiency hybrid switch control type mesohigh dynamic reactive compensator with reliability.
For realizing above-mentioned purpose; Technical solution of the present invention is: a kind of hybrid switch control type mesohigh dynamic reactive compensator, by isolating switch, one group of thyristor switch and many windings tentaculum switch multiple unit capacitor is carried out switch and operation control, and it is characterized in that: said isolating switch QS is connected with electrical network; Three electric capacity are set in said every group capacitor; The equal tandem reactor of each phase branch road constitutes a group capacitor in each electric capacity, and every group capacitor inserts two three-phase contactor switches, and the main switch of said every group capacitor is connected between isolating switch QS and the contactless contactor KM0; The auxiliary switch of said every group capacitor links to each other with thyristor switch KT; Thyristor switch KT one termination contactor KM0, the other end is connected with the auxiliary switch of each group capacitor, and said thyristor switch KT is in series by a plurality of thyristors.
The present invention has following advantage: adopt thyristor switch to carry out zero passage switch, no current impacts and transient process, and reliability is high; Only need one group of thyristor switch, cooperate contactless contactor to mix control, cost is low; Inserted by contactor after the capacitor group input, avoided the energy loss of thyristor switch, efficient is high; When thyristor switch breaks down, can run on the contactless contactor pattern, flexibility is good.
Description of drawings:
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment:
As shown in Figure 1; The isolating switch QS of this hybrid switch control type mesohigh dynamic reactive compensator is connected with electrical network, and isolating switch QS and contactless contactor KM0 join, and be as shown in Figure 1; Be provided with multiple unit capacitor in this device; Three electric capacity are set in every group capacitor, and the equal tandem reactor of each phase branch road constitutes a group capacitor in each electric capacity, and every group capacitor inserts two three-phase contactor switches; The main switch of said every group capacitor is connected between isolating switch QS and the contactless contactor KM0; The auxiliary switch of said every group capacitor links to each other with thyristor switch KT, thyristor switch KT one termination contactor KM0, and the other end is connected with the auxiliary switch of each group capacitor.Said thyristor switch KT is in series by a plurality of thyristors, to bear higher voltage.Above-mentioned thyristor switch KT can have only two by a plurality of thyristor series connection, also can be a plurality of thyristor series connection by three-phase.Referring to shown in Figure 1; First group capacitor is made up of the road of each phase of three capacitor C A1, CB1, CC1 all corresponding tandem reactor LA1, LB1, LC1; Second group capacitor is made up of the road of each phase of three capacitor C A2, CB2, CC2 all corresponding tandem reactor LA2, LB2, LC2; And the like; Refer to that the N group capacitor is made up of the road of each phase of three capacitor C AN, CBN, CCN all corresponding tandem reactor LAN, LBN, LCN; Two three-phase contact-making switches of access that every group capacitor is all corresponding, the main switch KMN1 of the main switch KM11 of first group capacitor, the main switch KM21 of second group capacitor and N group capacitor is connected between isolating switch QS and the contactless contactor KM0; The auxiliary switch KM12 of the auxiliary switch capacitor of the auxiliary switch KM12 of said first group capacitor, the auxiliary switch KM22 of first group capacitor and N group capacitor links to each other with thyristor switch KT, and each group capacitor can be star-like connection, also can be connected into the angle type.
When using hybrid switch control type mesohigh dynamic reactive compensator of the present invention, specifically need to add or reduce the capacitor group, can detect the idle of required compensation through controller, calculating needs to add or reduce the capacitor group.
The method that adds the capacitor group is: check that at first KMn1 is in off-state, connect KMn2, drop into capacitor through thyristor switch KT, connect KMn1 then, break off thyristor switch KT and KMn2, the capacitor group is accomplished and is added;
The method that reduces the capacitor group is: inspection KMn1 is in on-state, connects KMn2 and thyristor switch KT, breaks off KMn1 then, through thyristor switch KT excision capacitor group, breaks off KMn2 again, and the capacitor group is accomplished excision.
Claims (3)
1. hybrid switch control type mesohigh dynamic reactive compensator; By isolating switch, one group of thyristor switch and many windings tentaculum switch multiple unit capacitor is carried out switch and operation control; It is characterized in that: said isolating switch QS is connected with electrical network, and three electric capacity are set in said every group capacitor, and the equal tandem reactor of each phase branch road constitutes a group capacitor in each electric capacity; Every group capacitor inserts two three-phase contactor switches; The main switch of said every group capacitor is connected between isolating switch QS and the contactless contactor KM0, and the auxiliary switch of said every group capacitor links to each other with thyristor switch KT, thyristor switch KT one termination contactor KM0; The other end is connected with the auxiliary switch of each group capacitor, and said thyristor switch KT is in series by a plurality of thyristors.
2. a kind of hybrid switch control type mesohigh dynamic reactive compensator according to claim 1 is characterized in that: said thyristor switch KT has two by a plurality of thyristor series connection, perhaps has three-phase to be a plurality of thyristor series connection.
3. a kind of hybrid switch control type mesohigh dynamic reactive compensator according to claim 1 is characterized in that: said every group capacitor can or be connected into the angle type for star-like connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012103467740A CN102842913A (en) | 2012-09-18 | 2012-09-18 | Mixed switch control type medium-high voltage dynamic reactive power compensator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103467740A CN102842913A (en) | 2012-09-18 | 2012-09-18 | Mixed switch control type medium-high voltage dynamic reactive power compensator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247959Y (en) * | 2008-08-25 | 2009-05-27 | 西安森宝电气工程有限公司 | Stillness type high voltage reactive compensator of control transformer based on thyristor |
| CN201345549Y (en) * | 2009-01-21 | 2009-11-11 | 潘传粉 | High-voltage dynamic filtering compensation device |
| WO2010115470A1 (en) * | 2009-04-09 | 2010-10-14 | Abb Technology Ag | An arrangement for exchanging power |
| CN201877840U (en) * | 2010-12-20 | 2011-06-22 | 宋爽 | Three-phase unbalance regulation and reactive power compensation device for power distribution transformer |
| CN202034781U (en) * | 2011-01-22 | 2011-11-09 | 安徽绿能电气科技有限公司 | Chopped-mode reactive power continuous compensation device |
| CN202797999U (en) * | 2012-09-18 | 2013-03-13 | 西安西博电气有限公司 | Hybrid switch control medium-high voltage dynamic reactive power compensator |
-
2012
- 2012-09-18 CN CN2012103467740A patent/CN102842913A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247959Y (en) * | 2008-08-25 | 2009-05-27 | 西安森宝电气工程有限公司 | Stillness type high voltage reactive compensator of control transformer based on thyristor |
| CN201345549Y (en) * | 2009-01-21 | 2009-11-11 | 潘传粉 | High-voltage dynamic filtering compensation device |
| WO2010115470A1 (en) * | 2009-04-09 | 2010-10-14 | Abb Technology Ag | An arrangement for exchanging power |
| CN201877840U (en) * | 2010-12-20 | 2011-06-22 | 宋爽 | Three-phase unbalance regulation and reactive power compensation device for power distribution transformer |
| CN202034781U (en) * | 2011-01-22 | 2011-11-09 | 安徽绿能电气科技有限公司 | Chopped-mode reactive power continuous compensation device |
| CN202797999U (en) * | 2012-09-18 | 2013-03-13 | 西安西博电气有限公司 | Hybrid switch control medium-high voltage dynamic reactive power compensator |
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Application publication date: 20121226 |