CN105470939A - Filtering-type dynamic reactive compensation adjustment arc-extinguishing system - Google Patents
Filtering-type dynamic reactive compensation adjustment arc-extinguishing system Download PDFInfo
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- CN105470939A CN105470939A CN201510862462.9A CN201510862462A CN105470939A CN 105470939 A CN105470939 A CN 105470939A CN 201510862462 A CN201510862462 A CN 201510862462A CN 105470939 A CN105470939 A CN 105470939A
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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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- 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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The invention provides a filtering-type dynamic reactive compensation adjustment arc-extinguishing system, and the system comprises a TCT-type Z-type transformer and a phase control type arc-extinguishing coil in electrical connection with the TCT-type Z-type transformer. The phase control type arc-extinguishing coil is grounded. The secondary side of the TCT-type Z-type transformer is provided with a first winding and a second winding. The harmonic phase angles of the first and second windings are opposite in phase, and the phase angle is zero after the harmonic phase angles of the first and second windings are superposed. The system provided by the invention enables the phase angle after superposition to be zero through enabling the harmonic phase angles of the first and second windings to be opposite in phase when an inductive reactive compensation demand is higher, and eliminates fifth-order and seventh-order harmonic waves, thereby achieving the purpose of reducing the total harmonic distortion. The system provided by the invention can achieve the inductive reactive adjustment through one device, also can achieve the adjustment of the grounding capacitance current, saves a large number of land resources, and also saves the investment.
Description
Technical field
The present invention relates to arc-extinguishing system technical field, more specifically, relate to the arc-extinguishing system that a kind of filtering type dynamic passive compensation regulates.
Background technology
In the non-welding system of 10kV or 35kV, when outlet is many or cable outlet is long, this system capacitive earth current is just caused to haggle over greatly.For reply said circumstances, need to install arc suppression coil additional in this system transformer station, to improve single-phase earthing process arc light capacity for quenching, avoid the extension of fault.The wiring schematic diagram of arc suppression coil as shown in Figure 1.
When there is single phase ground fault, by regulating the equivalent inductance of neutral point place arc suppression coil, the output of inductance current can be realized, thus reaches the effect of arc extinguishing.Because the low-pressure side of power transformer generally adopts angle scheme, therefore need by grounding transformer, arc suppression coil to be linked in isolated neutral system.The mode of connection of grounding transformer often adopts Z-type wiring, and therefore, the grounding transformer of Z-type connection type is called Z-type transformer.The wiring schematic diagram of Z-type transformer as shown in Figure 2.When adopting Z-type transformer to be linked in isolated neutral system by arc suppression coil, drawing primary side neutral point O by Z-type transformer, thus arc suppression coil L is connected between neutral point O and ground connection.When there is single file ground connection, by the compensation regulating the equivalent inductance at L place in arc suppression coil can realize the direct-to-ground capacitance capacity current to zero sequence loop in non-effectively earthed system.
When the voltage of non-effectively earthed system is higher and when needing to regulate system voltage, need to install a set of dynamic inductive reactive power compensation device in addition additional, as TCT, TCR, MCR or SVG etc., to realize regulating system perception is idle.Not only can increase a large amount of money investments when installing dynamic inductive reactive power compensation device additional, but also need to take a large amount of transformer station's land resource, cause waste.Meanwhile, when inductive reactive power compensation demand is larger, while large capacity I CT regulation output inductive reactive power compensation, 5,7 larger subharmonic currents can be produced, thus the problem that access electric pressure harmonic voltage resultant distortion rate is larger can be caused.
Summary of the invention
The object of this invention is to provide the arc-extinguishing system that a kind of filtering type dynamic passive compensation regulates, with solve described in background technology when inductive reactive power compensation demand is larger, large capacity I CT regulation output inductive reactive power compensation can cause the problem that access electric pressure harmonic voltage resultant distortion rate is larger.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The invention provides the arc-extinguishing system that a kind of filtering type dynamic passive compensation regulates, the arc-extinguishing system that described filtering type dynamic passive compensation regulates comprises: TCT type Z-type transformer and the phase-control type arc suppression coil be electrically connected with described TCT type Z-type transformer; Described phase-control type arc suppression coil ground connection; The secondary side of described TCT type Z-type transformer is provided with the first winding and the second winding; Described first winding and described second around harmonic phase angle anti-phase, and superposition after phase angle be zero.
Preferably, described first winding and described second winding form 12 pulse wave structures.
Preferably, described first winding adopts star-connection martingale.
Preferably, described second winding adopts the wiring of the triangular form mode of connection.
The invention provides the arc-extinguishing system that a kind of filtering type dynamic passive compensation regulates, the phase-control type arc suppression coil that described arc-extinguishing system comprises TCT type Z-type transformer and is electrically connected with described TCT type Z-type transformer, described phase-control type arc suppression coil ground connection; The secondary side of described TCT type Z-type transformer is provided with the first winding and the second winding; The harmonic phase angle of described first winding and described second winding is anti-phase, and after superposition, phase angle is zero.The arc-extinguishing system that filtering type dynamic passive compensation provided by the present invention regulates is anti-phase by the harmonic phase angle of the first winding and the second winding, and the phase angle of harmonic wave after superposition is zero, thus eliminate 5,7 subharmonic, and then reach the object reducing total harmonic distortion factor.Simultaneously, the arc-extinguishing system that filtering type dynamic passive compensation provided by the present invention regulates only can not only realize the idle adjustment of perception but also the adjustment that can realize capacitive earth current by set of device, has not only saved a large amount of land resource but also has saved the input of money.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of arc suppression coil;
Fig. 2 is the wiring schematic diagram of Z-type transformer;
Fig. 3 is the wiring schematic diagram of TCT type controlled reactor;
Fig. 4 is the wiring schematic diagram of the arc-extinguishing system of the filtering type dynamic passive compensation adjustment that the embodiment of the present invention provides;
Symbol represents:
1-TCT type Z-type transformer, 2-phase-control type arc suppression coil, 3-first winding, 4-second winding.
Embodiment
The arc-extinguishing system that the filtering type dynamic passive compensation that the embodiment of the present invention provides regulates, solves when inductive reactive power compensation demand is larger, and large capacity I CT regulation output inductive reactive power compensation can cause the problem that access electric pressure harmonic voltage resultant distortion rate is larger.
Technical scheme in the embodiment of the present invention is understood better in order to make those skilled in the art person, and enable the above-mentioned purpose of the embodiment of the present invention, feature and advantage become apparent more, below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is described in further detail.
Please refer to accompanying drawing 4, the wiring schematic diagram of the arc-extinguishing system that the filtering type dynamic passive compensation that fig. 4 illustrating the embodiment of the present invention provides regulates.Embodiments provide the arc-extinguishing system that a kind of filtering type dynamic passive compensation regulates, the phase-control type arc suppression coil 2 that the arc-extinguishing system that described filtering type dynamic passive compensation regulates comprises TCT type Z-type transformer 1 and is electrically connected with described TCT type Z-type transformer 1, described phase-control type arc suppression coil 2 ground connection; The secondary side of described TCT type Z-type transformer 1 is provided with the first winding 3 and the second winding 4; The harmonic phase angle of described first winding 3 and described second winding 4 is anti-phase, and after superposition, phase angle is zero.
Wherein, when normally running, can realize the idle adjustment of perception by regulating TCT type Z-type transformer 1, and can realize the idle adjustment of continually varying perception, namely dynamic reactive regulates; When breaking down, can by the adjustment regulating phase-control type arc suppression coil 2 to realize capacitive earth current.When inductive reactive power compensation demand is larger, jumbo TCT type Z-type transformer 1 can carry out adjustment compensation to perception is idle, simultaneously, first winding 3 of TCT type Z-type transformer 1 secondary side and the harmonic phase angle of the second winding 4 anti-phase, the harmonic current waveforms angle of TCT type Z-type transformer 1 secondary side is changed, and then make the phase angle of the harmonic wave after superposition be zero, thus eliminate the distortion of the current waveform caused by 5,7 subharmonic of TCT type Z-type transformer 1 primary side, and then reach the object reducing total harmonic distortion factor.Simultaneously, the arc-extinguishing system that filtering type dynamic passive compensation provided by the present invention regulates only just can realize the idle adjustment of perception by set of device, but also the adjustment that can realize capacitive earth current, not only save a large amount of land resource but also saved the input of money.
At present, can realize having TCT (ThyristorControlledTrarlsfomer, i.e. TCT type controlled reactor), TCR, MCR and SVG etc. to the equipment master of the idle dynamic passive compensation regulated of system perception.Because TCT type controlled reactor has good reliability and non-maintaining property, thus become the trend that following dynamic reactive power compensator uses.Please refer to accompanying drawing 3, figure 3 show the wiring schematic diagram of TCT type controlled reactor.Can find out the first side winding delta connection of TCT type controlled reactor from accompanying drawing 3, and secondary side winding is three-phase and four-line star connection, Y connection, the controlled range of IGBT group delay angle is 90 °≤α≤180 °.Secondary side neutral point links together, often independent mutually, mutual deviation 120 ° between three-phase current.TCT type controlled reactor can be realized the primary side continuous adjustment that dynamically perception is idle by the angle of flow controlling secondary side thyristor.In the arc-extinguishing system that the filtering type dynamic passive compensation provided in the embodiment of the present invention regulates, TCT type Z-type transformer 1 be secondary side joint first thyristor 3 that the operation principle of reference TCT type controlled reactor is prepared in Z-type transformer.Short-circuit impedance can be brought up to 100% by 4%-10% by the TCT type Z-type transformer 1 adopting the embodiment of the present invention to provide, and passes through the angle of flow of control first thyristor 3, just can realize the idle adjustment of system perception.
First winding 3 of the arc-extinguishing system that the filtering type dynamic passive compensation that the embodiment of the present invention provides regulates and the second winding 4 groups form 12 pulse wave structures.In an ac cycle, export 12 half-waves, thus form 12 pulse wave structures.12 pulse wave structures can make the phase angle of harmonic wave be zero, thus eliminate 5,7 subharmonic, and then reach the object reducing total harmonic distortion factor.
Further, the first winding 3 adopts star-connection martingale, and the second winding 4 adopts the wiring of the triangular form mode of connection.Two windings can form 12 pulse wave structures by star-connection mode and the triangular form mode of connection, thus eliminate 5,7 subharmonic, and then reach the object reducing total harmonic distortion factor.
Comprehensive foregoing description is known, the arc-extinguishing system that the filtering type dynamic passive compensation that the embodiment of the present invention provides regulates is anti-phase by the harmonic phase angle of the first winding and the second winding when inductive reactive power compensation demand is larger, after making superposition, phase angle is zero, eliminate 5,7 subharmonic, and then reach the object reducing total harmonic distortion factor.The arc-extinguishing system set of device that filtering type dynamic passive compensation provided by the present invention regulates just can realize the idle adjustment of perception, the adjustment to capacitive earth current can also be realized, not only saved a large amount of land resource but also saved the input of money.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. an arc-extinguishing system for filtering type dynamic passive compensation adjustment, is characterized in that, the arc-extinguishing system that described filtering type dynamic passive compensation regulates comprises:
TCT type Z-type transformer (1) and the phase-control type arc suppression coil (2) be electrically connected with described TCT type Z-type transformer (1);
Described phase-control type arc suppression coil (2) ground connection;
The secondary side of described TCT type Z-type transformer (1) is provided with the first winding (3) and the second winding (4);
The harmonic phase angle of described first winding (3) and described second winding (4) is anti-phase, and after superposition, phase angle is zero.
2. the arc-extinguishing system of filtering type dynamic passive compensation adjustment according to claim 1, it is characterized in that, described first winding (3) and described second winding (4) form 12 pulse wave structures.
3. the arc-extinguishing system of filtering type dynamic passive compensation adjustment according to claim 2, it is characterized in that, described first winding (3) adopts star-connection martingale.
4. the arc-extinguishing system of filtering type dynamic passive compensation adjustment according to claim 2, is characterized in that, described second winding (4) adopts the wiring of the triangular form mode of connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510862462.9A CN105470939B (en) | 2015-11-30 | 2015-11-30 | A kind of arc-extinguishing system that filtering type dynamic passive compensation is adjusted |
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| CN201510862462.9A CN105470939B (en) | 2015-11-30 | 2015-11-30 | A kind of arc-extinguishing system that filtering type dynamic passive compensation is adjusted |
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| CN105470939A true CN105470939A (en) | 2016-04-06 |
| CN105470939B CN105470939B (en) | 2018-08-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110112752A (en) * | 2019-06-14 | 2019-08-09 | 河北旭辉电气股份有限公司 | A kind of dynamic reactive and extinguishing arc comprehensive compensation method |
| CN110544931A (en) * | 2019-10-18 | 2019-12-06 | 云南电网有限责任公司电力科学研究院 | earth fault current compensation system and method for self-generating power phase power supply |
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| CN101675569A (en) * | 2007-05-18 | 2010-03-17 | Abb技术有限公司 | Static var compensator apparatus |
| CN203278226U (en) * | 2013-05-30 | 2013-11-06 | 西安科技大学 | Capacitance regulating type automatic tuning arc extinguishing device |
| CN205141653U (en) * | 2015-11-30 | 2016-04-06 | 云南电网有限责任公司电力科学研究院 | Arc extinction device that filtering formula dynamic reactive compensation adjusted |
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| CN101675569A (en) * | 2007-05-18 | 2010-03-17 | Abb技术有限公司 | Static var compensator apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112752A (en) * | 2019-06-14 | 2019-08-09 | 河北旭辉电气股份有限公司 | A kind of dynamic reactive and extinguishing arc comprehensive compensation method |
| CN110544931A (en) * | 2019-10-18 | 2019-12-06 | 云南电网有限责任公司电力科学研究院 | earth fault current compensation system and method for self-generating power phase power supply |
| CN110544931B (en) * | 2019-10-18 | 2022-08-02 | 云南电网有限责任公司电力科学研究院 | Earth fault current compensation system and method for self-generating power phase power supply |
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| CN105470939B (en) | 2018-08-07 |
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