CN104734159A - High-frequency harmonic absorbing device - Google Patents
High-frequency harmonic absorbing device Download PDFInfo
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- CN104734159A CN104734159A CN201510150874.XA CN201510150874A CN104734159A CN 104734159 A CN104734159 A CN 104734159A CN 201510150874 A CN201510150874 A CN 201510150874A CN 104734159 A CN104734159 A CN 104734159A
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- 230000001629 suppression Effects 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims description 27
- 230000004907 flux Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 abstract description 4
- 230000001052 transient effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- -1 traffic Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Power Conversion In General (AREA)
Abstract
The invention relates to a high-frequency harmonic absorbing device. The device comprises a gas discharge tube, a high frequency absorbing circuit, an oscillation suppression loop and an indicating circuit, a circuit parallel connection mode is adopted, the whole device is connected between a phase line L and a midcourt line N through fuses, the gas discharge tube, the high frequency absorbing circuit and the oscillation suppression loop are connected in parallel, and the indicating circuit in connected in the oscillation suppression loop in parallel. The device has an inhibiting effect to high-frequency harmonic and high-frequency noise which are generated by electric equipment, and meanwhile the device restrains transient signals and surge signals in a power grid. The parallel connection mode is adopted, and the field installation is convenient.
Description
Technical field
The present invention relates to a kind of power filter technology, particularly a kind of high-frequency harmonic absorption plant.
Background technology
Along with the development of power electronic technology, power consumption equipment that be made up of electronic power switch in a large number, that have nonlinear characteristic is widely used in the industrial circles such as metallurgy, iron and steel, traffic, chemical industry, as electrolysis unit, electric locomotive, rolling mill, coreless induction furnace etc.These equipment create a large amount of high-frequency harmonics in the process used, and these high-frequency harmonics all produce very large interference to equipment and electrical network.And along with the development of power electronic technology, Semiconductor Converting Technology is high frequency day by day, the impact that high-frequency harmonic is disturbed is more and more serious.
High-frequency harmonic in electrical network, transition, surge and high-frequency noise produce many harm to electrical network and subscriber equipment.Concerning electrical network, the high-frequency harmonic electric current in transmission line will produce larger supplementary load loss on transmission line, make insulation accelerated aging, and leakage current increases, and serious even causes discharge breakdown; The eddy current loss of transformer is increased, and temperature rise is increased; High order harmonic component in electrical network can cause electric rotating machine overheated, makes power capacitor bank work abnormal, even causes thermal breakdown to damage; Also there is very large harm to the generator in electric power system, compensator, relay protection automatic unit and electric energy metrical etc., equipment malfunction can be caused time serious and do, cause a serious accident; Harmonic pollution is to communication, computer system, high accuracy processing equipment, and the power consumption equipments such as detecting instrument also have serious interference.Therefore, the high-frequency harmonic eliminated in electrical network must be taken effective measures.
At present, the domestic existing research of this respect, generally adopt power line filter, this structure has certain rejection ability to common and different mode signal, but only suppresses surge and transition interference with a nonlinear resistance, and rejection ability is very limited.In addition, this insertion concatenation type structure installment is inconvenient, applies very restricted.
Summary of the invention
The present invention be directed to existing power-supply filter installs inconvenient, the problem that rejection ability is very limited, propose a kind of high-frequency harmonic absorption plant, this harmonic absorption device, there is several functions, it both can absorb the dry and high-frequency harmonic of surge that electrical network inputs to power consumption equipment, spike, power consumption equipment can be suppressed again to produce high-frequency harmonic and inject electrical network.Simultaneously inhibited to common mode disturbances.
Technical scheme of the present invention is: a kind of high-frequency harmonic absorption plant, comprise gas discharge tube, high-frequency absorption circuit, vibration suppression loop, indicating circuit, whole device circuit parallel way is connected between phase line L and center line N by fuse, gas discharge tube, high-frequency absorption circuit, vibration suppress loop in parallel, and indicating circuit is connected in parallel on vibration to be suppressed in loop.
Described high-frequency absorption circuit connects current transformer respectively by two CBB electric capacity and forms.
Described vibration suppresses loop to be made up of the first loop CBB electric capacity, inductance, second servo loop CBB electric capacity and the resistance of connecting, and indicating circuit is connected in parallel on second servo loop CBB electric capacity and the resistance two ends of series connection.
Described current transformer magnetic core and inductance core adopt the annular minicrystal soft magnetic material of high initial magnetoconductivity, low-loss, high saturation magnetic flux density.
In described high-frequency absorption circuit, CBB electric capacity suppresses the CBB electric capacity in loop all to select high frequency capacitance CBB81 with vibration, and the capacitance difference of two of high-frequency absorption circuit electric capacity is within 1%.
Beneficial effect of the present invention is: high-frequency harmonic absorption plant of the present invention, and the high-frequency harmonic that this device produces power consumption equipment and high-frequency noise have inhibitory action, meanwhile, suppresses the transient signal in electrical network and surging signal.Adopt parallel, in-site installation is convenient.
Accompanying drawing explanation
Fig. 1 is high-frequency harmonic absorption plant circuit diagram of the present invention;
Fig. 2 is the power supply time domain beamformer that the present invention contains high-frequency harmonic;
Fig. 3 is the power supply time domain beamformer of the present invention after harmonic absorption device.
Embodiment
High-frequency harmonic absorption plant circuit diagram as shown in Figure 1, gas discharge tube 2 is directly connected between phase line L and center line N by fuse 1, and for eliminating the surge interference in electrical network, transient voltage killer tube 2 is for eliminating the interference of transition fast in electrical network.Two CBB electric capacity 3,4, an end is connected on one end of fuse 1, and the other end meets center line N respectively by current transformer 5, forms high-frequency absorption circuit, absorbing high-frequency harmonic wave; The CBB electric capacity 6 of connecting successively, inductance 7, CBB electric capacity 8 and resistance 9 form higher-order of oscillation damper, are directly eliminated the vibration interference of the high-frequency and high-voltage in electrical network by fuse 1 between phase-connecting wire L and center line N.Indicating circuit is composed in series with resistance 12 after diode 10 and light-emitting diode 11 parallel connected in reverse phase; resistance 12 plays current-limiting protection light-emitting diode 11; whole device is by fuse 1 and be connected in after in electrical network; light-emitting diode 11 is bright; device connects normal work; as the fuse go, light-emitting diode 11 goes out, device cisco unity malfunction.
Current transformer 5 magnetic core in apparatus of the present invention and inductance 7 magnetic core adopt the minicrystal soft magnetic material toroidal core with very high initial magnetoconductivity, low-loss, high saturation magnetic flux density (Bs=1.20T), can obtain volume is little, loss is little, it is low to generate heat and temperature stability is good current transformer and inductance, current transformer and inductance core are non-ly leaves gapped core.Electric capacity 3,4,6,8 adopts high frequency capacitance CBB81; the capacitance of the electric capacity 3,4 wherein in high-frequency absorption circuit needs coupling; two electric capacity value differences control in 1%; improve the assimilation effect of harmonic wave; resistance 12 is 100 ohm; for the protection of light-emitting diode 11, resistance 13 is 300k ohm, for residual voltage during cancellation element power down.When in electrical network the high-voltage high-speed ringing pulse interference that produces of power consumption equipment or surging signal time, being connected in parallel on gas discharge tube 2 on power supply has rapidly high resistant to become low-resistance, makes supply voltage be clamped on a predetermined value, suppresses the transient signal in electrical network and surging signal.
This device adopts parallel, and in-site installation is convenient.Test containing high-frequency harmonic time domain waveform power supply as shown in Figure 2, this device in parallel, its time domain waveform as shown in Figure 3, has good absorption to high-frequency harmonic.
Claims (5)
1. a high-frequency harmonic absorption plant, it is characterized in that, comprise gas discharge tube, high-frequency absorption circuit, vibration suppression loop, indicating circuit, whole device circuit parallel way is connected between phase line L and center line N by fuse, gas discharge tube, high-frequency absorption circuit, vibration suppress loop in parallel, and indicating circuit is connected in parallel on vibration to be suppressed in loop.
2. high-frequency harmonic absorption plant according to claim 1, it is characterized in that, described high-frequency absorption circuit connects current transformer respectively by two CBB electric capacity and forms.
3. high-frequency harmonic absorption plant according to claim 2, it is characterized in that, described vibration suppresses loop to be made up of the first loop CBB electric capacity, inductance, second servo loop CBB electric capacity and the resistance of connecting, and indicating circuit is connected in parallel on second servo loop CBB electric capacity and the resistance two ends of series connection.
4. high-frequency harmonic absorption plant according to claim 3, is characterized in that, described current transformer magnetic core and inductance core adopt the annular minicrystal soft magnetic material of high initial magnetoconductivity, low-loss, high saturation magnetic flux density.
5. high-frequency harmonic absorption plant according to claim 3, it is characterized in that, in described high-frequency absorption circuit, CBB electric capacity suppresses the CBB electric capacity in loop all to select high frequency capacitance CBB81 with vibration, and the capacitance difference of two of high-frequency absorption circuit electric capacity is within 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150874.XA CN104734159A (en) | 2015-04-01 | 2015-04-01 | High-frequency harmonic absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150874.XA CN104734159A (en) | 2015-04-01 | 2015-04-01 | High-frequency harmonic absorbing device |
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| Publication Number | Publication Date |
|---|---|
| CN104734159A true CN104734159A (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510150874.XA Pending CN104734159A (en) | 2015-04-01 | 2015-04-01 | High-frequency harmonic absorbing device |
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| Country | Link |
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| CN (1) | CN104734159A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245088A (en) * | 2018-10-29 | 2019-01-18 | 上海电力学院 | A kind of direct-current grid route invariant feature extracting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004222445A (en) * | 2003-01-16 | 2004-08-05 | Fuji Electric Device Technology Co Ltd | Power factor improvement circuit for power conversion device |
| CN2796213Y (en) * | 2005-05-27 | 2006-07-12 | 湖南大学 | Mixed high power active power filter |
| CN1933273A (en) * | 2005-09-12 | 2007-03-21 | 上海浩顺科技有限公司 | Power supply wave shape correcting filter |
| CN103427420A (en) * | 2013-08-30 | 2013-12-04 | 上海坤友电气有限公司 | Harmonic wave absorbing device |
| CN103701126A (en) * | 2013-12-26 | 2014-04-02 | 武汉光谷电气有限公司 | Three-phase five-wire system harmonic protector |
| CN204668949U (en) * | 2015-04-01 | 2015-09-23 | 上海电力学院 | A kind of high-frequency harmonic absorption plant |
-
2015
- 2015-04-01 CN CN201510150874.XA patent/CN104734159A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004222445A (en) * | 2003-01-16 | 2004-08-05 | Fuji Electric Device Technology Co Ltd | Power factor improvement circuit for power conversion device |
| CN2796213Y (en) * | 2005-05-27 | 2006-07-12 | 湖南大学 | Mixed high power active power filter |
| CN1933273A (en) * | 2005-09-12 | 2007-03-21 | 上海浩顺科技有限公司 | Power supply wave shape correcting filter |
| CN103427420A (en) * | 2013-08-30 | 2013-12-04 | 上海坤友电气有限公司 | Harmonic wave absorbing device |
| CN103701126A (en) * | 2013-12-26 | 2014-04-02 | 武汉光谷电气有限公司 | Three-phase five-wire system harmonic protector |
| CN204668949U (en) * | 2015-04-01 | 2015-09-23 | 上海电力学院 | A kind of high-frequency harmonic absorption plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245088A (en) * | 2018-10-29 | 2019-01-18 | 上海电力学院 | A kind of direct-current grid route invariant feature extracting method |
| CN109245088B (en) * | 2018-10-29 | 2021-03-02 | 上海电力学院 | Method for extracting line stability characteristics of direct-current micro-grid |
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Application publication date: 20150624 |
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