CN102244388A - Reactive power compensation and filtering device with automatically adjustable inductance ratio - Google Patents
Reactive power compensation and filtering device with automatically adjustable inductance ratio Download PDFInfo
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- CN102244388A CN102244388A CN2011101949354A CN201110194935A CN102244388A CN 102244388 A CN102244388 A CN 102244388A CN 2011101949354 A CN2011101949354 A CN 2011101949354A CN 201110194935 A CN201110194935 A CN 201110194935A CN 102244388 A CN102244388 A CN 102244388A
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- inductance
- inductance rate
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- reactive power
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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
The invention relates to a reactive power compensation and filtering device with an automatically adjustable an inductance ratio. The reactive power compensation and filtering device comprises an ammeter, a current transformer, a voltage transformer, a controller and an inductance ratio adjustable reactive power compensation module, wherein the ammeter is connected with a power supply bus by the current transformer and the voltage transformer, and is connected with the controller; and the controller is connected with the inductance ratio adjustable reactive power compensation module which is connected with the power supply bus. Compared with the prior art, the reactive power compensation and filtering device has the advantages of solving the problems that the reactive power compensation and filtering device with a fixed inductance ratio may produce harmonic resonance under harmonic interference when field harmonic frequency is relatively more greatly changed and that the compensation and filtering device is overloaded and overheated, and the like.
Description
Technical field
The present invention relates to a kind of reactive power compensation and filter, especially relating to a kind of inductance rate can self-adjusting reactive power compensation and filter.
Background technology
Present reactive power compensation and the filter of producing, its reactance Rate is fixed, and is generally 7%, 14% etc. several.And on-the-spot actual conditions are when load change, and the Harmonic Interference frequency of its generation also will change thereupon, and the filter of constant reactance rate can't be adapted to, and as easy as rolling off a logly cause reactive power compensation and the damage of on-the-spot operational outfit under harmonic resonance.
In order to prevent that reactive power compensator from constituting serial or parallel connection resonance with the reactance of electric power system under Harmonic Interference, thereby cause the damage of reactive power compensator and power supply thereof and power consumption equipment, at present the reactive-load compensator of producing usually dress be that 7%, 14% reactor is formed by the constant reactance rate, to avoid the harmonic resonance more than three times or five times.
But occasion in the frequent change of load, its harmonic frequency that causes parasitic resonance changes, especially in the frequent occasion of stopping transport of some large-scale electric equipments, harmonic frequency can have greatly changed under different operational modes, the reactive power compensator of constant reactance rate in this case, aspect anti-Harmonic Interference, be difficult to obtain good effect.Be that actual harmonic frequency can bigger deviation take place with the natural frequency of the reactive power compensator that the constant reactance rate is housed, thereby cause reactive power compensator overload, heating and harmonic wave to amplify the fault that causes other power consumption equipments.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of inductance rate can self-adjusting reactive power compensation and filter in order to overcome the defective that above-mentioned prior art exists.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of inductance rate can self-adjusting reactive power compensation and filter, it is characterized in that, comprise ammeter, current transformer, voltage transformer, controller, the adjustable reactive compensation module of inductance rate, described ammeter is connected with power supply buses by current transformer, voltage transformer respectively, described ammeter is connected with controller, described controller is connected with the adjustable reactive compensation module of inductance rate, and the adjustable reactive compensation module of described inductance rate is connected with power supply buses;
Described ammeter is gathered electric current, the voltage signal of power supply buses by current transformer, voltage transformer, and electric current, voltage signal be transferred to controller, controller is through obtaining the percentage composition of power factor and each harmonic after calculating, decide the inductance rate of the adjustable reactive compensation module of inductance rate according to the maximum harmonic number of humorous content, and the adjustable reactive compensation module of control inductance rate places on this inductance rate power supply buses is carried out reactive power compensation.
The adjustable reactive compensation module of described inductance rate comprises resistance, a plurality of inductance rate diverter switch, inductance, electric capacity, resistance one end is connected with power supply buses, the other end connects by a plurality of inductance rate diverter switches respectively, each inductance rate diverter switch connects with the inductance position of corresponding inductance rate, and described inductance passes through capacity earth.
Described a plurality of inductance rate diverter switch is connected with controller respectively, and controller is controlled it and opened and closed to regulate the inductance rate.
Compared with prior art, the present invention has in the time of can solving harmonic frequency at the scene and take place than cataclysm the reactive power compensation of fixed inductance rate and may produce harmonic resonance and compensation and harmonic device with harmonic device under Harmonic Interference and transship and overheated problem.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of inductance rate can self-adjusting reactive power compensation and filter, comprise ammeter 1, current transformer 4, voltage transformer 5, controller 2, the inductance rate is adjustable reactive compensation module 3, described ammeter 1 is connected with power supply buses by current transformer 4, voltage transformer 5 respectively, described ammeter 1 is connected with controller 2, described controller 2 is connected with the adjustable reactive compensation module 3 of inductance rate, and the adjustable reactive compensation module 3 of described inductance rate is connected with power supply buses;
Described ammeter 1 is gathered electric current, the voltage signal of power supply buses by current transformer 4, voltage transformer 5, and electric current, voltage signal be transferred to controller 2, controller 2 is through obtaining the percentage composition of power factor and each harmonic after calculating, decide the inductance rate of the adjustable reactive compensation module 3 of inductance rate according to the maximum harmonic number of humorous content, and the adjustable reactive compensation module 3 of control inductance rate places on this inductance rate power supply buses is carried out reactive power compensation.
The adjustable reactive compensation module 3 of described inductance rate comprises resistance R, a plurality of inductance rate diverter switch 31, inductance L, capacitor C, resistance R one end is connected with power supply buses, the other end connects by a plurality of inductance rate diverter switches 31 respectively, each inductance rate diverter switch 31 connects with the inductance L position of corresponding inductance rate, and described inductance L is by capacitor C ground connection.Described a plurality of inductance rate diverter switch 31 is connected with controller 2 respectively, controller 2 its switchings of control.Inductance rate diverter switch 31 is provided with 6, and the inductance rate of the inductance rate is adjustable reactive compensation module 3 is provided with 6 grades, is respectively 5%, 7%, 10%, 14%, 17%, 20%.
When regulating the inductance rate, insert corresponding inductance rate diverter switch earlier, excise the inductance rate diverter switch that needs excision according to order again, to reduce the switching electric current in the handoff procedure.For avoiding excessive frequent switching inductance rate diverter switch, influence the useful life of switch, controller need consider to drop into the action insensitive interval and the corresponding time delay of inductance rate, to guarantee reasonably to regulate switching frequency.
Claims (3)
1. an inductance rate can self-adjusting reactive power compensation and filter, it is characterized in that, comprise ammeter, current transformer, voltage transformer, controller, the adjustable reactive compensation module of inductance rate, described ammeter is connected with power supply buses by current transformer, voltage transformer respectively, described ammeter is connected with controller, described controller is connected with the adjustable reactive compensation module of inductance rate, and the adjustable reactive compensation module of described inductance rate is connected with power supply buses;
Described ammeter is gathered electric current, the voltage signal of power supply buses by current transformer, voltage transformer, and electric current, voltage signal be transferred to controller, controller is through obtaining the percentage composition of power factor and each harmonic after calculating, decide the inductance rate of the adjustable reactive compensation module of inductance rate according to the maximum harmonic number of humorous content, and the adjustable reactive compensation module of control inductance rate places on this inductance rate power supply buses is carried out reactive power compensation.
2. a kind of inductance rate according to claim 1 can self-adjusting reactive power compensation and filter, it is characterized in that, the adjustable reactive compensation module of described inductance rate comprises resistance, a plurality of inductance rate diverter switch, inductance, electric capacity, resistance one end is connected with power supply buses, the other end connects by a plurality of inductance rate diverter switches respectively, each inductance rate diverter switch connects with the inductance position of corresponding inductance rate, and described inductance passes through capacity earth.
3. a kind of inductance rate according to claim 2 can self-adjusting reactive power compensation and filter, it is characterized in that described a plurality of inductance rate diverter switches are connected with controller respectively, and controller is controlled it and opened and closed to regulate the inductance rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101949354A CN102244388A (en) | 2011-07-12 | 2011-07-12 | Reactive power compensation and filtering device with automatically adjustable inductance ratio |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101949354A CN102244388A (en) | 2011-07-12 | 2011-07-12 | Reactive power compensation and filtering device with automatically adjustable inductance ratio |
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| CN102244388A true CN102244388A (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101949354A Pending CN102244388A (en) | 2011-07-12 | 2011-07-12 | Reactive power compensation and filtering device with automatically adjustable inductance ratio |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935174A (en) * | 2015-06-10 | 2015-09-23 | 三峡大学 | Full bridge DC-DC converter including adjustable inductance network |
| CN110729734A (en) * | 2019-11-26 | 2020-01-24 | 无锡市电力滤波有限公司 | Resonance point debugging loop and method of high-voltage power filter device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01222318A (en) * | 1988-03-01 | 1989-09-05 | Nissin Electric Co Ltd | System for controlling inverter of reactive power compensation device |
| CN2087810U (en) * | 1991-02-23 | 1991-10-30 | 唐寅生 | Multi-tap series reactor for high-voltage parallel capacitor |
| CN1061681A (en) * | 1990-11-21 | 1992-06-03 | 西南交通大学 | Adjustable bootstrap voltage mode static compensator |
| CN201222418Y (en) * | 2008-05-14 | 2009-04-15 | 北京思能达电力技术有限公司 | Sectional type adjustable reactor |
| CN201536263U (en) * | 2009-07-08 | 2010-07-28 | 黄留欣 | Voltage-regulating SVC |
| CN201797318U (en) * | 2010-02-25 | 2011-04-13 | 薛兴华 | Reactance-adjustable reactive power compensator |
-
2011
- 2011-07-12 CN CN2011101949354A patent/CN102244388A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01222318A (en) * | 1988-03-01 | 1989-09-05 | Nissin Electric Co Ltd | System for controlling inverter of reactive power compensation device |
| CN1061681A (en) * | 1990-11-21 | 1992-06-03 | 西南交通大学 | Adjustable bootstrap voltage mode static compensator |
| CN2087810U (en) * | 1991-02-23 | 1991-10-30 | 唐寅生 | Multi-tap series reactor for high-voltage parallel capacitor |
| CN201222418Y (en) * | 2008-05-14 | 2009-04-15 | 北京思能达电力技术有限公司 | Sectional type adjustable reactor |
| CN201536263U (en) * | 2009-07-08 | 2010-07-28 | 黄留欣 | Voltage-regulating SVC |
| CN201797318U (en) * | 2010-02-25 | 2011-04-13 | 薛兴华 | Reactance-adjustable reactive power compensator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935174A (en) * | 2015-06-10 | 2015-09-23 | 三峡大学 | Full bridge DC-DC converter including adjustable inductance network |
| CN104935174B (en) * | 2015-06-10 | 2019-01-15 | 三峡大学 | A kind of full-bridge DC/DC converter containing tunable inductance network |
| CN110729734A (en) * | 2019-11-26 | 2020-01-24 | 无锡市电力滤波有限公司 | Resonance point debugging loop and method of high-voltage power filter device |
| CN110729734B (en) * | 2019-11-26 | 2024-04-12 | 无锡市电力滤波有限公司 | Resonance point debugging loop and method of high-voltage power filter device |
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Application publication date: 20111116 |