CN104821584A - Higher harmonic suppression device - Google Patents
Higher harmonic suppression device Download PDFInfo
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- CN104821584A CN104821584A CN201510267482.1A CN201510267482A CN104821584A CN 104821584 A CN104821584 A CN 104821584A CN 201510267482 A CN201510267482 A CN 201510267482A CN 104821584 A CN104821584 A CN 104821584A
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- Prior art keywords
- harmonic
- suppression device
- nonlinear load
- harmonics
- higher harmonic
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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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- Supply And Distribution Of Alternating Current (AREA)
- Power Conversion In General (AREA)
Abstract
Provided is a higher harmonic suppression device which relates to the technical field of an electric control switch cabinet. The suppression device is characterized in that the suppression device comprises a power grid, an active harmonic regulator and a nonlinear load, wherein the power grid is connected with the nonlinear load through the active harmonic regulator. The higher harmonic suppression device can transmit a harmonic opposite to the harmonic generated by the nonlinear load to the power grid side, so that the effect of harmonic suppression is achieved.
Description
Technical field
The present invention relates to electric controling switch cabinet technical field, be specifically related to limitation of high harmonics device.
Background technology
In electric power network, owing to there is a large amount of nonlinear load, power network current waveform is caused to be no longer sinusoidal wave, this non-sinusoidal waveform can be decomposed into a DC quantity by Fourier series, first-harmonic sinusoidal quantity and a series of frequency are the high order harmonic component sinusoidal component sum of fundamental frequency integral multiple, for the voltage that current threephase alternator group sends, think that first-harmonic is sinusoidal wave, both in waveform substantially without DC quantity and higher harmonic components, but owing to there is harmonic source miscellaneous in electric power system, the interference of high order harmonic component is made to have become in current power system to affect one large " public hazards " of the quality of power supply.
Suppress mains by harmonics, the measure that tradition adopts has: 1, three-phase rectifier transformer adopts Yd or Dy to connect, and connection can eliminate the high order harmonic component of the integral multiple of 3 like this, but the harmonic current in electrical network only has the odd harmonics such as 5,7,11,13; 2, the number of phases of rectifier transformer secondary side is increased; 3, installing shunting filter; 4, static passive compensation device is filled, although above-mentioned four kinds of suppressor mode purifications to electrical network play certain effect, it has significant limitation, or only can not be confined within very little scope to harmonic wave comprehensive management, these modes are all passive, can not change with harmonic wave change.
Summary of the invention
The object of this invention is to provide limitation of high harmonics device, it can carry a harmonic wave contrary with the harmonic wave that nonlinear load produces to grid side, thus reaches the effect of harmonics restraint.
In order to solve the problem existing for background technology, the present invention is employing is adopt following technical problem: it comprises electrical network, active harmonics adjuster and nonlinear load, and electrical network is connected with nonlinear load by active harmonics adjuster.
Advantage of the present invention a: harmonic wave contrary with the harmonic wave that nonlinear load produces can be carried to grid side, thus reach the effect of harmonics restraint.
Accompanying drawing illustrates:
Fig. 1 is structure principle chart of the present invention.
Embodiment
With reference to Fig. 1, it comprises electrical network 1, active harmonics adjuster 2 and nonlinear load 3, and electrical network 1 is connected 3 by active harmonics adjuster 2 with nonlinear load.
Its main course of work is: sample to the harmonic wave that nonlinear load produces, then research and application, set up spectrogram, this spectrogram is sent signal as according to converter, a harmonic wave contrary with the harmonic wave that nonlinear load produces is carried to grid side, reach the object of harmonic inhabitation, active harmonics adjuster effectively can suppress the harmonic wave of 2--25 time, the phase angle of actual conditions to voltage and current waveform according to electrical network adjusts, correcting current waveform, improve power factor, thus the interference that effective harmonic inhabitation is formed electrical network.
Claims (1)
1. limitation of high harmonics device, is characterized in that comprising electrical network, active harmonics adjuster and nonlinear load, and electrical network is connected with nonlinear load by active harmonics adjuster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267482.1A CN104821584A (en) | 2015-05-25 | 2015-05-25 | Higher harmonic suppression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267482.1A CN104821584A (en) | 2015-05-25 | 2015-05-25 | Higher harmonic suppression device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104821584A true CN104821584A (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510267482.1A Pending CN104821584A (en) | 2015-05-25 | 2015-05-25 | Higher harmonic suppression device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104821584A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173474Y (en) * | 1993-11-12 | 1994-08-03 | 北京电力科学研究院 | Electric network harmonic wave active suppressing device |
| CN102386622A (en) * | 2011-11-03 | 2012-03-21 | 东南大学 | Fully active harmonic control device combining full compensation and fractionated compensation of a plurality of machines |
| CN103701127A (en) * | 2013-12-27 | 2014-04-02 | 国电南京自动化股份有限公司 | Novel active power filtering device and control method thereof |
| CN103872685A (en) * | 2014-03-11 | 2014-06-18 | 韩伟 | Harmonic current fractional frequency staggered compensation device and harmonic current fractional frequency giving algorithm thereof |
-
2015
- 2015-05-25 CN CN201510267482.1A patent/CN104821584A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173474Y (en) * | 1993-11-12 | 1994-08-03 | 北京电力科学研究院 | Electric network harmonic wave active suppressing device |
| CN102386622A (en) * | 2011-11-03 | 2012-03-21 | 东南大学 | Fully active harmonic control device combining full compensation and fractionated compensation of a plurality of machines |
| CN103701127A (en) * | 2013-12-27 | 2014-04-02 | 国电南京自动化股份有限公司 | Novel active power filtering device and control method thereof |
| CN103872685A (en) * | 2014-03-11 | 2014-06-18 | 韩伟 | Harmonic current fractional frequency staggered compensation device and harmonic current fractional frequency giving algorithm thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |