CN201378736Y - Passive filter compensation device - Google Patents
Passive filter compensation device Download PDFInfo
- Publication number
- CN201378736Y CN201378736Y CN200920106788U CN200920106788U CN201378736Y CN 201378736 Y CN201378736 Y CN 201378736Y CN 200920106788 U CN200920106788 U CN 200920106788U CN 200920106788 U CN200920106788 U CN 200920106788U CN 201378736 Y CN201378736 Y CN 201378736Y
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- China
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- loop
- utility
- power
- 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
- Y02E40/30—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
本实用新型涉及一种无源滤波补偿装置，在三相交流电源的每两项之间接有电感L与电容C串联而成的LC回路，并将该LC回路与非线性负载并联，从而达到补偿无功，吸收谐波电流的作用。本实用新型既能消除谐波，又能进行无功补偿，提高功率因数；同时根据功率因数的大小，进行分级投入，安全可靠；本装置还能进行多台并联扩容，减少扩容投资。
The utility model relates to a passive filter compensation device, in which an LC loop formed by series connection of an inductance L and a capacitor C is connected between every two items of a three-phase AC power supply, and the LC loop is connected in parallel with a nonlinear load to achieve compensation Reactive power, the role of absorbing harmonic current. The utility model can not only eliminate harmonics, but also perform reactive power compensation and improve the power factor; at the same time, according to the size of the power factor, it can be input in stages, which is safe and reliable; the device can also expand the capacity of multiple units in parallel to reduce the expansion investment.
Description
Technical field
The utility model relates to a kind of passive filtering compensation arrangement, is applied to electric power system controlling electric energy field.
Background technology
The popularization and application of power electronic equipment is harmonic wave source maximum in the electrical network, and along with the application of power electronic equipment is increasingly extensive, the harmonic pollution in the electrical network also is on the rise.Simultaneously, the power factor of most power electronic equipment is all lower, brings added burden to electrical network, has also influenced power supply quality.Therefore, how the filtering harmonic wave is the problem that power supply department, electric power system and electric utility all press for solution with improving power factor.
Summary of the invention
The purpose of this utility model is to improve above-mentioned deficiency of the prior art and a kind of passive filtering compensation arrangement is provided, thereby reaches compensating reactive power, absorbs the effect of harmonic current.
The purpose of this utility model reaches by following measure:
A kind of passive filtering compensation arrangement is characterized in that: between per two of three-phase alternating-current supply, be connected to the LC loop that inductance L and capacitor C are in series, and described LC loop is in parallel with nonlinear load.
Described nonlinear load termination has reactive power self-compensating controlling device.
Advantage of the present utility model is:
(1) both harmonic carcellation solves reactive power compensation again, improves power factor;
(2) according to the size of power factor, carry out the classification input, safe and reliable;
(3) many of device energy are parallel extended, reduce the dilatation investment;
Description of drawings
Fig. 1 is the utility model embodiment circuit theory schematic diagram.
Fig. 2 is the reactive power compensating controller elementary diagram.
Embodiment
Filter circuit of the present utility model is to be connected in parallel between utility network and the non-linear load being connected to the LC loop that reactance L and capacitor C be in series, realize the automatic switching of filter circuit by reactive power self-compensating controlling device, the mode of this three-phase centralized compensation, both realize the function that dynamic compensation is idle, reached the effect of harmonic carcellation again.
As shown in Figure 1, the utility model passive filtering compensation arrangement structure is to be connected to the circuit that inductance L is connected with capacitor C between per two of three-phase alternating-current supply, form the LC series loop, the LC loop is in parallel with nonlinear load, thus reach compensating reactive power, absorb the effect of harmonic current.
As shown in Figure 2, the nonlinear load end is connected with the voltage signal input US1 of reactive power self-compensating controlling device, US2 and current signal input IS1, IS2, a chip that can carry out signal operation is arranged in the controller, give electric current of controller and voltage signal, calculate reactive power and harmonic current that nonlinear load produces, at reactive power that is produced and harmonic current, set the circuit parameter and the switching feeder number in LC loop, the power factor of load is reached more than 90%, if the power of LC loop compensation has surpassed 100%, then be overcompensation, at this moment automatic disconnection LC loop under the effect of controller.LC loop resonance frequency is set on the harmonic frequency that needs filtering, on for example 5 times, 7 times, the 11 times resonance points, reaches the purpose of this 3 subharmonic of filtering.Reactive power compensation can be carried out to system in LC of the present utility model loop in the filtering harmonic wave, satisfy the requirement of dilatation simultaneously.
Claims (2)
1, a kind of passive filtering compensation arrangement is characterized in that: be connected to the LC loop that inductance L and capacitor C are in series between per two of three-phase alternating-current supply, described LC loop is attempted by the two ends of nonlinear load.
2, a kind of passive filtering compensation arrangement as claimed in claim 1, it is characterized in that: described nonlinear load termination has reactive power self-compensating controlling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106788U CN201378736Y (en) | 2009-04-10 | 2009-04-10 | Passive filter compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106788U CN201378736Y (en) | 2009-04-10 | 2009-04-10 | Passive filter compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378736Y true CN201378736Y (en) | 2010-01-06 |
Family
ID=41518856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920106788U Expired - Lifetime CN201378736Y (en) | 2009-04-10 | 2009-04-10 | Passive filter compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378736Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005761A (en) * | 2010-11-27 | 2011-04-06 | 国网南自控股（杭州）有限公司 | Special filtering-compensation complete equipment for short net |
| CN104901310A (en) * | 2014-03-07 | 2015-09-09 | 中国人民解放军海军电磁兼容研究检测中心 | Three-phase composite passive harmonic wave filtering device |
-
2009
- 2009-04-10 CN CN200920106788U patent/CN201378736Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005761A (en) * | 2010-11-27 | 2011-04-06 | 国网南自控股（杭州）有限公司 | Special filtering-compensation complete equipment for short net |
| CN104901310A (en) * | 2014-03-07 | 2015-09-09 | 中国人民解放军海军电磁兼容研究检测中心 | Three-phase composite passive harmonic wave filtering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100106 |