CN1564414A - High-low voltage power harmonic two-way suppresser - Google Patents
High-low voltage power harmonic two-way suppresser Download PDFInfo
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- CN1564414A CN1564414A CNA2004100143783A CN200410014378A CN1564414A CN 1564414 A CN1564414 A CN 1564414A CN A2004100143783 A CNA2004100143783 A CN A2004100143783A CN 200410014378 A CN200410014378 A CN 200410014378A CN 1564414 A CN1564414 A CN 1564414A
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- circuit
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- inductor
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- resonant circuit
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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
Abstract
Technical issue to be solved in the invention is to prevent each high order harmonic and noise on power network from entering into devices on terminal user side and vice versa. Main technical point is that between power network and devices on terminal user side, following circuits are connected: series resonance circuit X1 includes capacitor C1 and inductor L1; parallel resonance circuit X2 includes capacitor C2 and inductor L2; series resonance circuit X3 includes capacitor C3 and inductor L3; circuit X1 is cascaded to paralleled connected circuit X2 and circuit X3. The disclosed circuit is ideal circuit for restraining harmonic.
Description
Technical field: the present invention relates to a kind of filter, the two-way restraining device of particularly a kind of high and low pressure electric harmonic.
Background technology: the harmonic wave in the utility network (being harmonic current and harmonic voltage) is the pollution very serious to power grid environment.The mains by harmonics source mainly comes from following three aspects: the one, and energy source generation harmonic wave of low quality; The 2nd, electrical power trans mission/distribution system produces harmonic wave; The 3rd, the harmonic wave that power consumption equipment produces.Wherein the harmonic wave that produces of power consumption equipment at most (wherein the content with 3 subharmonic is maximum again, and harm is maximum, can reach first-harmonic 30%).Show by statistics: the harmonic wave that is produced by rectifying device accounts for the nearly 40% of all harmonic waves, and this is maximum harmonic source.Household electrical appliance: television set, video tape recorder, computer, dimming lamp, temperature adjustment cooker etc. because of having the voltage regulating rectifier device, all can produce darker odd harmonic.The variation of unsymmetrical current has in the equipment of winding at washing machine, electric fan, air conditioner etc., because of also can make waveform change.Though these household electrical appliance power are less, enormous amount is a topmost harmonic source in the utility network.Along with power electronic equipment use increasingly extensive, the harmonic pollution in the electrical network is on the rise.Harmonic wave reduces the efficient of electrical energy production, transmission and utilization; Make device of overheating of electrical, produce vibration and noise, and make its ageing of insulation, reduce useful life, even break down or burn, and harmonic wave also can cause relay protection and automatics misoperation, and electric energy metrical is caused confusion.For the electric power system outside, harmonic wave can produce serious the interference to communication equipment and electronic equipment, and the harmonic pollution that power electronic equipment produced has become the major obstacles that hinders the power electronic technology self-growth.In view of various countries' electric power system, electric power enterprise and power consumer to the above-mentioned electric harmonic ground contamination electrical network that is on the rise, electric power enterprise and power consumer are all to the stage that can not continue to bear.The electric power scientific and technical personnel have developed all kinds filter at the harm of harmonic wave, have obtained certain effect, but all fail to tackle the problem at its root.
Technical problem to be solved by this invention is: provide a kind of and can stop that each high order harmonic component and clutter enter end user device on the electrical network, make power supply pure, clean; Each high order harmonic component and the clutter that can stop end user device to produce again do not return transmission network, make electrical network reduce the humorous two-way restraining device of high and low pressure electric harmonic that clutter pollutes that involves.Its technical scheme is: the two-way restraining device of a kind of high and low pressure electric harmonic, it is characterized in that: be connected the series resonant circuit that is made of capacitor and inductor between power network line and end user device, antiresonant circuit that is made of capacitor and inductor and the series resonant circuit that is made of capacitor and inductor are connected in parallel after this series resonant circuit.Its technique effect is: because the series resonant circuit that is made of inductor and capacitor is equivalent to zero to the pressure drop of the electric network source of 50HZ, make it and to pass through smoothly, and each high order harmonic component and the clutter of 50HZ had very big impedance, make it can not by or be difficult to pass through.Therefore, this series resonant circuit can make electric network source deliver to end user device smoothly, and can stop each high order harmonic component and clutter on the electrical network to enter end user device.Simultaneously, each high order harmonic component and the clutter that end user device produced also intercepted, make it to enter electrical network; The antiresonant circuit that is made of inductor and capacitor is then just in time opposite with this series resonant circuit, and its electric network source to 50HZ has very big impedance, and very little to the impedance of each high order harmonic component of 50HZ and clutter.And the series resonant circuit that is connected in parallel with this antiresonant circuit, then resonance carries out filtering to the triple-frequency harmonics that electric equipment produced on the triple-frequency harmonics of the first-harmonic of harmonic content maximum.Therefore, this device can either carry out filtering to a small amount of each high order harmonic component and clutter by the 50HZ in the electric network source of series resonant circuit, again can be to being carried out filtering by each high order harmonic component that end user device produced and clutter that series resonant circuit intercepted, thereby prevent and reduce each high order harmonic component and the clutter pollution of electrical network from the source, guarantee power supply quality, realize the purpose of the two-way inhibition of high and low pressure electric harmonic.In addition, the two-way restraining device of high and low pressure electric harmonic of the present invention has good energy-conservation economic benefit and social benefit, be that electric harmonic suppresses desirable equipment, and circuit is simple, principle is clear, practical, suitable each high order harmonic component that equipment harmonic sources such as high and low pressure all kinds electromechanical equipment, household electrical appliance are produced suppresses and administers.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment:
As shown in Figure 1, be connected the series resonant circuit X1 that is made of capacitor C1 and inductor L1 between power network line and end user device, antiresonant circuit X2 that is made of capacitor C2 and inductor L2 and the series resonant circuit X3 that is made of capacitor C3 and inductor L3 are connected in parallel after this series resonant circuit.
Its operation principle: when electric network source by the series resonant circuit X1 that constitutes by capacitor C1 and inductor L1 when end user device is powered, this series resonant circuit is equivalent to zero to the pressure drop of the electric network source of 50HZ, make it and to pass through smoothly, and each high order harmonic component and the clutter of 50HZ had very big impedance, make it can not by or be difficult to pass through.Therefore, this series resonant circuit can make electric network source deliver to end user device smoothly, and can stop each high order harmonic component and clutter on the electrical network to enter end user device, pure, clean with the electric network source of guaranteeing to enter end user device.Simultaneously, when end user device in when work, each high order harmonic component and clutter that it produced are also intercepted by this series resonant circuit, make it to enter electrical network, are not polluted by each high order harmonic component and the clutter that this end user device produced to guarantee electric network source; Then just in time the series resonant circuit X1 with above-mentioned is opposite for the antiresonant circuit X2 that is made of inductor L2 and capacitor C2, and its electric network source to 50HZ has very big impedance, and very little to the impedance of each high order harmonic component of 50HZ and clutter.And the series resonant circuit X3 that is connected in parallel with this antiresonant circuit X2, then resonance carries out filtering to the triple-frequency harmonics that electric equipment produced on the triple-frequency harmonics of the first-harmonic of harmonic content maximum.Therefore, this device can either carry out filtering to a small amount of each high order harmonic component and clutter by the 50HZ in the electric network source of series resonant circuit, can carry out filtering to each high order harmonic component that end user device produced that is intercepted by series resonant circuit X1 again, thereby prevent and reduce the harmonic pollution of electrical network, guarantee power supply quality.
Claims (1)
1, the two-way restraining device of a kind of high and low pressure electric harmonic, it is characterized in that: between power network line and end user device, be connected the series resonant circuit (X1) that constitutes by capacitor (C1) and inductor (L1), the antiresonant circuit (X2) that constitutes by capacitor (C2) and inductor (L2) of being connected in parallel after this series resonant circuit and by the series resonant circuit (X3) of capacitor (C3) and inductor (L3) formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100143783A CN1564414A (en) | 2004-03-18 | 2004-03-18 | High-low voltage power harmonic two-way suppresser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100143783A CN1564414A (en) | 2004-03-18 | 2004-03-18 | High-low voltage power harmonic two-way suppresser |
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| Publication Number | Publication Date |
|---|---|
| CN1564414A true CN1564414A (en) | 2005-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2004100143783A Pending CN1564414A (en) | 2004-03-18 | 2004-03-18 | High-low voltage power harmonic two-way suppresser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427232A (en) * | 2008-07-25 | 2012-04-25 | 武汉大学 | Multiple-harmonic-source harmonic isolation device |
| CN104362629A (en) * | 2014-10-27 | 2015-02-18 | 国家电网公司 | Harmonic electric energy recycling device |
| CN104659786A (en) * | 2015-02-04 | 2015-05-27 | 贵州电网公司电网规划研究中心 | Device for separating and eliminating resonance between power distribution network and electric equipment, and using method of device |
| CN105896540A (en) * | 2016-04-13 | 2016-08-24 | 苏州立旭智能电气有限公司 | Voltage-dividing type harmonic suppression device |
-
2004
- 2004-03-18 CN CNA2004100143783A patent/CN1564414A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427232A (en) * | 2008-07-25 | 2012-04-25 | 武汉大学 | Multiple-harmonic-source harmonic isolation device |
| CN104362629A (en) * | 2014-10-27 | 2015-02-18 | 国家电网公司 | Harmonic electric energy recycling device |
| CN104659786A (en) * | 2015-02-04 | 2015-05-27 | 贵州电网公司电网规划研究中心 | Device for separating and eliminating resonance between power distribution network and electric equipment, and using method of device |
| CN105896540A (en) * | 2016-04-13 | 2016-08-24 | 苏州立旭智能电气有限公司 | Voltage-dividing type harmonic suppression device |
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