CN101588069A - Harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device - Google Patents
Harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device Download PDFInfo
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- CN101588069A CN101588069A CNA2009100230483A CN200910023048A CN101588069A CN 101588069 A CN101588069 A CN 101588069A CN A2009100230483 A CNA2009100230483 A CN A2009100230483A CN 200910023048 A CN200910023048 A CN 200910023048A CN 101588069 A CN101588069 A CN 101588069A
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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
- Y02E40/20—Active power filtering [APF]
Abstract
The present invention relates to a kind of harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device.It is made up of mechanical switched capacitor MSC, the static reacance generator SVG and the Active Power Filter-APF APF that are connected on the electrical network 1.The present invention has replaced thyristor-controlled reactor TCR in existing harmonic wave and the Reactive-current General Compensation system with SVG, because producing reactive power by transformation of electrical energy, SVG carries out reactive power compensation, so it does not need energy-storage travelling wave tubes such as jumbo reactor, capacitor, make the capacity of MSC and SVG reduce half at least, reduced the volume and the cost that has reduced system of system effectively.Simultaneously, SVG uses full-controlled switch device IGBT, and response speed is fast, and its system response time is better than TCR greatly less than 20ms, because SVG does not produce harmonic current, the capacity of APF is reduced again, further reduces the volume of system and reduces cost.
Description
Technical field
The present invention relates to a kind of electrical network dynamic reactive compensation device, specifically, it is a kind of harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device.
Background technology
In prior art, domestic public use a kind of based on thyristor-controlled reactor type reactive power compensator (be called for short SVC) harmonic wave and the idle dynamic comprehensive compensation system as shown in Figure 4, it is made up of the Thyristor Controlled Reactor (being called for short TCR), Active Power Filter-APF (being called for short APF), the mechanical switched capacitor (being called for short MSC) that are connected on the electrical network 1.In this system, the reactive compensation capacity of MSC, TCR is identical with the maximum reactive capability of the required compensation of electrical network.The system that is 2M with a capacity is that example illustrates below, and the maximum reactive capability of the required compensation of electrical network is 2M, and then the reactive capability of MSC and TCR also need be designed to 2M in the system.The fixing switching of the capacitive reactive power capacity of MSC wherein, exportable idle capacitive capacity is 0 or 2M, TCR is 0～2M by regulating exportable perceptual reactive capability, so the reactive compensation capacity of system's output can change at capacitive 2M, thereby realize the capacitive and the perceptual two-way dynamic passive compensation of electrical network between perceptual 2M.APF in the system is used for the harmonic wave of filtering electrical network.Harmonic source in the electrical network comes from two places, the one, come from load, the 2nd, come from TCR (because the control element among the TCR is a thyristor, its capacitive is to realize by the angle of flow of regulating thyristor with the voltage output of perception, this adjusting makes the wave distortion of output voltage, so produce harmonic wave), therefore, the capacity of APF will be determined according to the harmonic compensation capacity of load and TCR, can realize the dynamic filter of 2～25 subharmonic.The harmonic wave of similar SVC and idle dynamic comprehensive compensation system also have Chinese patent application 200710192665.7.
The existing shortcoming of this system is:
1, the reactive capability of TCR and MSC is identical with the maximum reactive capability of the required compensation of electrical network, makes system bulk huge.
2, the control element of TCR---thyristor is a half control type device, every thyristor is triggered and changes once in the power frequency period of a line voltage, through measuring, the response time that this variation is the fastest is 10ms, the whole system response time is about 100ms, can't adapt to the needs that fast responding closes.
3, TCR produces a large amount of harmonic currents in running, and the burden of having aggravated APF has increased the capacity of APF, has further increased system bulk.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming in the above-mentioned prior art, provide a kind of improved harmonic wave and Reactive-current General Compensation system, with the generation of the volume that reduces system and cost, raising system response time, elimination system self harmonic current based on two-way dynamic reactive compensation device.
For achieving the above object, technical scheme of the present invention is as follows:
It is made up of the mechanical switched capacitor, static reacance generator and the Active Power Filter-APF that are connected on the electrical network.
Further improved technical scheme of the present invention is as follows:
Described Active Power Filter-APF is installed near load.
By technique scheme as can be seen, the present invention has replaced TCR with static reacance generator (being called for short SVG), this static reacance generator produces reactive power by transformation of electrical energy and reaches the reactive power compensation purpose, so it does not need energy-storage travelling wave tubes such as jumbo reactor, capacitor.Therefore, in general, the capacity of MSC and SVG can reduce half at least, has reduced the volume and the cost that has reduced system of system effectively.Simultaneously, SVG uses full-controlled switch device IGBT, and response speed is fast, and after tested, its system response time is better than TCR greatly less than 20ms, is applicable to any quick response reactive compensation system.In addition, SVG amplitude of output voltage, phase place and frequency be scalable all, and its waveform is undistorted in adjusting, so do not produce harmonic current, eliminated the harmonic source of system self, alleviated the compensatory pressure of APF, the capacity of APF reduced, further reduced system volume and reduce cost.
Description of drawings
Fig. 1, circuit theory diagrams of the present invention.
The control system block diagram of Fig. 2, reactive compensation system of the present invention.
The circuit diagram of Fig. 3, current source converter.
The circuit theory diagrams of Fig. 4, existing harmonic wave and Reactive-current General Compensation system.
Embodiment
Referring to Fig. 1, native system is made up of SVG, the MSC and the APF that are connected on the electrical network 1.Be the example explanation still below with a 2M system, the maximum reactive capability of the required compensation of electrical network is 2M, then the reactive capability of MSC and SVG respectively need be designed to 1M in the system, the fixing switching of the 1M capacitive reactive power capacity of MSC wherein, exportable idle capacitive capacity is 0 or 1M, SVG is by regulating exportable capacitive reactive power capacity 1M to perceptual capacity 1M, so the reactive compensation capacity of system's output can be at perceptual 1M to changing continuously between the capacitive 2M, satisfied the capacitive reactive power compensation of electrical network 2M, simultaneously, also can satisfy the inductive reactive power compensation of electrical network 1M.In general, the required perceptual compensation rate of electrical network is littler than capacitive compensation rate, so the perceptual compensation rate of half can be satisfied the demand.
Referring to Fig. 1,2, under the control of harmonic wave among Fig. 1 and Reactive-current General Compensation system control system in Fig. 2, harmonic wave in the electrical network 1 and reactive power are carried out dynamic comprehensive compensating.Its operation principle is: the control system among Fig. 2 is learnt the reactive capability and the harmonic current of the required compensation of electrical network by the voltage and current (sign among test point such as Fig. 1) of detection of grid, control the switching of MSC then with control switch QF1, simultaneously, dc voltage by detecting SVG and APF and the output that output current is regulated the SVG reactive capability and the output of APF harmonic current, make MSC and SVG export corresponding reactive compensation capacity, realization is to the reactive power compensation of electrical network, simultaneously, harmonic current with APF output, offset the harmonic current in the electrical network, reach the purpose of harmonic wave and Reactive-current General Compensation.Wherein the detection of SVG and APF and control are mature technologies.
Again referring to Fig. 1, described APF installs near load 2 as far as possible, and MSC and SVG can be installed in arbitrarily between electric network source 3 and the load 2, and wherein APF is near load, the harmonic current that can make the APF generation reaches the purpose of effective, accurate compensation not because of long Distance Transmission loss.
SVG shown in Figure 1 and the topology of APF are the voltage-type current transformer, and can also adopting as shown in Figure 3 in the practical application, current source converter replaces.
Claims (2)
1, a kind of harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device is characterized in that: it is made up of the mechanical switched capacitor (MSC), static reacance generator (SVG) and the Active Power Filter-APF (APF) that are connected on the electrical network (1).
2, harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device according to claim 1 is characterized in that: described Active Power Filter-APF (APF) is installed near load (2).
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| CNA2009100230483A CN101588069A (en) | 2009-06-26 | 2009-06-26 | Harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device |
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| CNA2009100230483A CN101588069A (en) | 2009-06-26 | 2009-06-26 | Harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545221A (en) * | 2011-04-06 | 2012-07-04 | 上海华盾石油工程技术有限公司 | Full-active dynamic harmonic suppression and reactive compensation system used for direct current motor-driven drilling machines |
| CN102946103A (en) * | 2012-10-16 | 2013-02-27 | 西安奥特迅电力电子技术有限公司 | Active electric power filter device with self-testing function and testing method |
| CN103354440A (en) * | 2013-06-19 | 2013-10-16 | 苏州经贸职业技术学院 | Dust collector controller with harmonic wave suppression |
| CN103515968A (en) * | 2013-09-29 | 2014-01-15 | 安徽华正电气有限公司 | Energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box |
| CN103606935A (en) * | 2013-11-26 | 2014-02-26 | 国家电网公司 | Dynamic direct-current voltage-stabilizing method for static synchronous reactive compensation device |
| CN103956738A (en) * | 2014-04-23 | 2014-07-30 | 国家电网公司 | Control method for battery energy storage system with both function of APF and function of SVG |
| CN106229977A (en) * | 2016-09-14 | 2016-12-14 | 山东华天电气有限公司 | Circuit electric energy quality optimizing device based on WIFI communication, method and system |
| CN106505570A (en) * | 2016-11-01 | 2017-03-15 | 中国矿业大学 | A kind of Large Copacity Active Power Filter-APF based on multiple-variable flow device group |
| CN113595099A (en) * | 2021-08-24 | 2021-11-02 | 郴州市东塘电气设备有限公司 | Device and system for managing transformer no-load reactive power |
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2009
- 2009-06-26 CN CNA2009100230483A patent/CN101588069A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545221A (en) * | 2011-04-06 | 2012-07-04 | 上海华盾石油工程技术有限公司 | Full-active dynamic harmonic suppression and reactive compensation system used for direct current motor-driven drilling machines |
| CN102545221B (en) * | 2011-04-06 | 2014-12-03 | 上海华盾石油工程技术有限公司 | Full-active dynamic harmonic suppression and reactive compensation system used for direct current motor-driven drilling machines |
| CN102946103A (en) * | 2012-10-16 | 2013-02-27 | 西安奥特迅电力电子技术有限公司 | Active electric power filter device with self-testing function and testing method |
| CN103354440A (en) * | 2013-06-19 | 2013-10-16 | 苏州经贸职业技术学院 | Dust collector controller with harmonic wave suppression |
| CN103515968A (en) * | 2013-09-29 | 2014-01-15 | 安徽华正电气有限公司 | Energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box |
| CN103606935A (en) * | 2013-11-26 | 2014-02-26 | 国家电网公司 | Dynamic direct-current voltage-stabilizing method for static synchronous reactive compensation device |
| CN103606935B (en) * | 2013-11-26 | 2015-11-04 | 国家电网公司 | A kind of dynamic DC voltage-stabilizing method of static state synchronization reactive compensator |
| CN103956738A (en) * | 2014-04-23 | 2014-07-30 | 国家电网公司 | Control method for battery energy storage system with both function of APF and function of SVG |
| CN103956738B (en) * | 2014-04-23 | 2015-12-02 | 国家电网公司 | A kind of battery energy storage system control method having APF and SVG function concurrently |
| CN106229977A (en) * | 2016-09-14 | 2016-12-14 | 山东华天电气有限公司 | Circuit electric energy quality optimizing device based on WIFI communication, method and system |
| CN106505570A (en) * | 2016-11-01 | 2017-03-15 | 中国矿业大学 | A kind of Large Copacity Active Power Filter-APF based on multiple-variable flow device group |
| CN113595099A (en) * | 2021-08-24 | 2021-11-02 | 郴州市东塘电气设备有限公司 | Device and system for managing transformer no-load reactive power |
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Open date: 20091125 |