CN202260466U - Low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device - Google Patents
Low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device Download PDFInfo
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- CN202260466U CN202260466U CN2011203465591U CN201120346559U CN202260466U CN 202260466 U CN202260466 U CN 202260466U CN 2011203465591 U CN2011203465591 U CN 2011203465591U CN 201120346559 U CN201120346559 U CN 201120346559U CN 202260466 U CN202260466 U CN 202260466U
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- phase
- thyristor
- filter unit
- throw
- 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
Abstract
The utility model discloses a low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device, which is characterized by comprising a control unit, a three-phase thyristor switching and filtering unit and a single-phase thyristor switching and filtering unit, wherein a first thyristor module is controlled by using the control unit; a second thyristor module is controlled by using the control unit; and the three-phase thyristor switching and filtering unit and the single-phase thyristor switching and filtering unit are connected in parallel to the secondary low-voltage side of a transformer. The low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device in the utility model has the advantages that: (1) adaptation to quickly-varying loads can be realized, and a filtering compensator is started and stopped at a highest response speed; (2) double targets including power factor compensation and harmonic suppression are fulfilled simultaneously; (3) reactive power compensation accuracy is high, and a control step can be reduced to be below 10 KVAR; (4) a harmonic suppression effect can reach a national standard, and filtering compensators of various reactance rates can be selected or customized; and (5) three-phase co-compensation and single-phase sub-compensation can be realized simultaneously in a four-wire three-phase power grid.
Description
Technical field
The utility model relates to the single-phase mixed filtering compensation arrangement of a kind of low pressure dynamic reactive power three-phase.
Background technology
Along with the develop rapidly of power electronic technology, the loading condition more sophisticated in the present low voltage electric network.For example: a large amount of convertible frequency air-conditioner, power saving fluorescent lamps and PCs of using in the civil buildings, these use the equipment of single phase poaer supply can produce a large amount of harmonic waves, and serious meeting causes three-phase imbalance, the problem that transformer is overheated.
And at present; Reactive power filtering compensation for low voltage electric network; Normally used reactive power compensation filtering compensation equipment designs to the factories and miness power load; Exist compensation step level excessive, can not can not satisfy the up-to-date demand of the idle filtering compensation of present low voltage electric network to the situation of a certain phase power filter compensation.
The utility model content
The purpose of the utility model is in order to overcome deficiency of the prior art, to provide a kind of and can realize simultaneously that for the four-wire three-phase system electrical network three-phase compensates altogether and the single-phase mixed filtering compensation arrangement of novel low pressure dynamic reactive power three-phase of single-phase branch compensation.
For realizing above purpose, the utility model is realized through following technical scheme:
The single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase is characterized in that, comprising:
Control unit; Control unit detects voltage, current signal, and the output control signal is controlled first thyristor module and the second thyristor module switching;
Three-phase thyristor switching filter unit, said three-phase thyristor switching filter unit comprises that the first capacitor group, first reactor and first thyristor module are in series; The first capacitor group is connected with triangle by three capacitors and is connected on A, B, the C three-phase; First thyristor module is controlled by control unit;
Single-phase thuristor throw-in and throw-off filter unit, said single-phase thuristor throw-in and throw-off filter unit comprises that the second capacitor group, second reactor and second thyristor module are in series; The second capacitor group connects with Y shape and is connected on A, B, the C three-phase; Second thyristor module is controlled by control unit;
Said three-phase thyristor switching filter unit and single-phase thuristor throw-in and throw-off filter unit are parallel to the transformer secondary low-pressure side.
Preferably, said three-phase thyristor switching filter unit number is more than two; Said single-phase thuristor throw-in and throw-off filter unit number is more than two.
Preferably, said three-phase thyristor switching filter unit is in series with first fuse.
Preferably, said single-phase thuristor throw-in and throw-off filter unit is in series with second fuse.
Preferably, be in series with instrument transformer between the tie point of said three-phase thyristor switching filter unit and single-phase thuristor throw-in and throw-off filter unit and the electrical network.
Preferably, the thyristor control end of first thyristor module is connected with the output of control unit; The thyristor control end of second thyristor module is connected with the output of control unit.
The single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase in the utility model, (1). can adapt to quick varying duty, with fastest response speed, drop into and withdraw from the filtering compensation device smoothly; (2). accomplish the double goal that the power factor compensation harmonic is administered simultaneously; (3). the reactive power compensation precision is high, and control step level can narrow down to below the 10KVAR; (4). the harmonic wave control effect can be up to state standards, and can select or the filtering compensation device of multiple reactance Rate customized; (5). can realize simultaneously that for the four-wire three-phase system electrical network three-phase compensates altogether and the compensation of single-phase branch.
Description of drawings
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing the utility model is carried out detailed description:
Like Fig. 1, shown in Figure 2, the single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase comprises:
Control unit; Control unit detects voltage, current signal, and the output control signal is controlled first thyristor module 2 and second thyristor module, 3 switchings;
Three-phase thyristor switching filter unit 4, said three-phase thyristor switching filter unit 4 comprise that the first capacitor group 5, first reactor 6 and first thyristor module 2 are in series; The first capacitor group 5 is connected with triangle by three capacitors and is connected on A, B, the C three-phase (not shown).The thyristor control end of first thyristor module 2 is connected with the output of control unit; First thyristor module 2 is by control unit 1 control.
Single-phase thuristor throw-in and throw-off filter unit 7, said single-phase thuristor throw-in and throw-off filter unit 7 comprise that the second capacitor group 8, second reactor 9 and second thyristor module 3 are in series; The second capacitor group 8 connects with Y shape and is connected on A, B, the C three-phase (not shown).The thyristor control end of second thyristor module 7 is connected with the output of control unit 1.Second thyristor module 3 is controlled by control unit.
Said three-phase thyristor switching filter unit 4 is parallel to the transformer secondary low-pressure side with single-phase thuristor throw-in and throw-off filter unit 7.
Three-phase thyristor switching filter unit 4 is in series with first fuse 10.Single-phase thuristor throw-in and throw-off filter unit 7 is in series with second fuse 11.
Be in series with instrument transformer 13 between the tie point of three-phase thyristor switching filter unit 4 and single-phase thuristor throw-in and throw-off filter unit 7 and the electrical network 12.
Be in series with lightning arrester 14 between the tie point of three-phase thyristor switching filter unit 4 and single-phase thuristor throw-in and throw-off filter unit 7 and the electrical network 12.
Embodiment in the utility model only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in the utility model protection range.
Claims (6)
1. the single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase is characterized in that, comprising:
Control unit; Control unit detects voltage, current signal, and the output control signal is controlled first thyristor module and the second thyristor module switching;
Three-phase thyristor switching filter unit, said three-phase thyristor switching filter unit comprises that the first capacitor group, first reactor and first thyristor module are in series; The first capacitor group is connected with triangle by three capacitors and is connected on A, B, the C three-phase; First thyristor module is controlled by control unit;
Single-phase thuristor throw-in and throw-off filter unit, said single-phase thuristor throw-in and throw-off filter unit comprises that the second capacitor group, second reactor and second thyristor module are in series; The second capacitor group connects with Y shape and is connected on A, B, the C three-phase; Second thyristor module is controlled by control unit;
Said three-phase thyristor switching filter unit and single-phase thuristor throw-in and throw-off filter unit are parallel to the transformer secondary low-pressure side.
2. the single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase according to claim 1 is characterized in that, said three-phase thyristor switching filter unit number is more than two; Said single-phase thuristor throw-in and throw-off filter unit number is more than two.
3. the single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase according to claim 1 is characterized in that said three-phase thyristor switching filter unit is in series with first fuse.
4. the single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase according to claim 1 is characterized in that said single-phase thuristor throw-in and throw-off filter unit is in series with second fuse.
5. the single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase according to claim 1 is characterized in that, is in series with instrument transformer between the tie point of said three-phase thyristor switching filter unit and single-phase thuristor throw-in and throw-off filter unit and the electrical network.
6. the single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase according to claim 1 is characterized in that the thyristor control end of first thyristor module is connected with the output of control unit; The thyristor control end of second thyristor module is connected with the output of control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203465591U CN202260466U (en) | 2011-09-15 | 2011-09-15 | Low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203465591U CN202260466U (en) | 2011-09-15 | 2011-09-15 | Low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202260466U true CN202260466U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203465591U Expired - Lifetime CN202260466U (en) | 2011-09-15 | 2011-09-15 | Low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device |
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| Country | Link |
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| CN (1) | CN202260466U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969726A (en) * | 2012-11-16 | 2013-03-13 | 成都星宇节能技术股份有限公司 | Intelligent dynamic reactive compensation device |
| CN106300373A (en) * | 2015-05-11 | 2017-01-04 | 江苏中自电气技术有限公司 | A kind of step-less adjustment dynamic compensating system |
| WO2017132856A1 (en) * | 2016-02-03 | 2017-08-10 | 海能达通信股份有限公司 | Filter circuit, rf anti-interference circuit and rf signal generating circuit |
-
2011
- 2011-09-15 CN CN2011203465591U patent/CN202260466U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969726A (en) * | 2012-11-16 | 2013-03-13 | 成都星宇节能技术股份有限公司 | Intelligent dynamic reactive compensation device |
| CN106300373A (en) * | 2015-05-11 | 2017-01-04 | 江苏中自电气技术有限公司 | A kind of step-less adjustment dynamic compensating system |
| WO2017132856A1 (en) * | 2016-02-03 | 2017-08-10 | 海能达通信股份有限公司 | Filter circuit, rf anti-interference circuit and rf signal generating circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ROLLAY ELECTRIC (SHANGHAI) CO., LTD. Free format text: FORMER NAME: CHINA ELECTRONIC ROLLAY DIGITAL TECHNOLOGY (SHANGHAI) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Fengxian District Jinhui Town money highway 201407 Shanghai City No. 411 Building 2 room 115 Patentee after: China Rollay Electric (Shanghai) Co., Ltd. Address before: Fengxian District Jinhui Town money highway 201407 Shanghai City No. 411 Building 2 room 115 Patentee before: China Rollary Digital Technology (Shanghai) Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Fengxian District Jinhui Town money highway 201407 Shanghai City No. 411 Building 2 room 115 Patentee after: Shanghai ROLLAY electrical Limited by Share Ltd Address before: Fengxian District Jinhui Town money highway 201407 Shanghai City No. 411 Building 2 room 115 Patentee before: China Rollay Electric (Shanghai) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |