CN202260466U - Low-voltage dynamic reactive power three-phase single-phase hybrid filtering compensation device - Google Patents

Low-voltage dynamic reactive power three-phase single-phase hybrid filtering compensation device Download PDF

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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
reactive power
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唐二年
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Shanghai Rollay Electrical Ltd By Share Ltd
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China Rollary Digital Technology Shanghai Co ltd
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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
    • 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

本实用新型公开了一种低压动态无功功率三相单相混合滤波补偿装置，其特征在于，包括：控制单元；三相晶闸管投切滤波单元；第一晶闸管模块由控制单元控制；单相晶闸管投切滤波单元；第二晶闸管模块由控制单元控制；所述三相晶闸管投切滤波单元与单相晶闸管投切滤波单元并联于变压器二次低压侧。本实用新型中的低压动态无功功率三相单相混合滤波补偿装置，(1).能适应快速变化负载，以最快响应速度、平滑地投入和退出滤波补偿器；(2).同时完成功率因数补偿和谐波治理的双重目标；(3).无功补偿精度高，控制步级可以缩小到10KVAR以下；(4).谐波治理效果能达到国家标准，可选择或定做多种电抗率的滤波补偿器；(5).对于四线三相制电网能同时实现三相共补偿以及单相分补偿。

Figure 201120346559

The utility model discloses a low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device, which is characterized by comprising: a control unit; a three-phase thyristor switching filter unit; a first thyristor module controlled by the control unit; a single-phase thyristor switching filter unit; a second thyristor module controlled by the control unit; the three-phase thyristor switching filter unit and the single-phase thyristor switching filter unit are connected in parallel to the secondary low-voltage side of the transformer. The low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device in the utility model: (1) It can adapt to rapidly changing loads and smoothly switch in and out of the filter compensator with the fastest response speed; (2) It can simultaneously achieve the dual goals of power factor compensation and harmonic control; (3) The reactive power compensation has high accuracy, and the control step can be reduced to less than 10KVAR; (4) The harmonic control effect can meet national standards, and filter compensators with various reactance rates can be selected or customized; (5) For a four-wire three-phase power grid, it can simultaneously achieve three-phase co-compensation and single-phase separate compensation.

Figure 201120346559

Description

The single-phase mixed filtering compensation arrangement of low pressure dynamic reactive power three-phase
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.低压动态无功功率三相单相混合滤波补偿装置，其特征在于，包括：1. The low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device is characterized in that it includes: 控制单元；控制单元检测电压、电流信号，并输出控制信号控制第一晶闸管模块和第二晶闸管模块投切；A control unit; the control unit detects voltage and current signals, and outputs control signals to control switching between the first thyristor module and the second thyristor module; 三相晶闸管投切滤波单元，所述三相晶闸管投切滤波单元包括第一电容器组、第一电抗器及第一晶闸管模块串联而成；第一电容器组由三个电容器以三角形串联且连接至A、B、C三相上；第一晶闸管模块由控制单元控制；Three-phase thyristor switching filter unit, the three-phase thyristor switching filter unit includes a first capacitor bank, a first reactor and a first thyristor module connected in series; the first capacitor bank is composed of three capacitors connected in delta in series and connected to A, B, C three-phase on; the first thyristor module is controlled by the control unit; 单相晶闸管投切滤波单元，所述单相晶闸管投切滤波单元包括第二电容器组、第二电抗器及第二晶闸管模块串联而成；第二电容器组以Y形连接且连接至A、B、C三相上；第二晶闸管模块由控制单元控制；A single-phase thyristor switching filter unit, the single-phase thyristor switching filter unit includes a second capacitor bank, a second reactor and a second thyristor module connected in series; the second capacitor bank is connected in a Y shape and connected to A and B , C three-phase on; the second thyristor module is controlled by the control unit; 所述三相晶闸管投切滤波单元与单相晶闸管投切滤波单元并联于变压器二次低压侧。The three-phase thyristor switching filter unit and the single-phase thyristor switching filter unit are connected in parallel on the secondary low-voltage side of the transformer. 2.根据权利要求1所述的低压动态无功功率三相单相混合滤波补偿装置，其特征在于，所述三相晶闸管投切滤波单元数目为两个以上；所述单相晶闸管投切滤波单元数目为两个以上。2. The low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device according to claim 1, characterized in that, the number of the three-phase thyristor switching filter units is more than two; the single-phase thyristor switching filter unit The number of units is two or more. 3.根据权利要求1所述的低压动态无功功率三相单相混合滤波补偿装置，其特征在于，所述三相晶闸管投切滤波单元串联有第一熔断器。3. The low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device according to claim 1, characterized in that the three-phase thyristor switching filter unit is connected in series with a first fuse. 4.根据权利要求1所述的低压动态无功功率三相单相混合滤波补偿装置，其特征在于，所述单相晶闸管投切滤波单元串联有第二熔断器。4. The low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device according to claim 1, characterized in that the single-phase thyristor switching filter unit is connected in series with a second fuse. 5.根据权利要求1所述的低压动态无功功率三相单相混合滤波补偿装置，其特征在于，所述三相晶闸管投切滤波单元与单相晶闸管投切滤波单元的连接点与电网之间串联有互感器。5. The low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device according to claim 1, characterized in that, the connection point between the three-phase thyristor switching filter unit and the single-phase thyristor switching filter unit and the grid Transformers are connected in series. 6.根据权利要求1所述的低压动态无功功率三相单相混合滤波补偿装置，其特征在于，第一晶闸管模块的晶闸管控制端与控制单元的输出端连接；第二晶闸管模块的晶闸管控制端与控制单元的输出端连接。6. The low-voltage dynamic reactive power three-phase single-phase hybrid filter compensation device according to claim 1, wherein the thyristor control end of the first thyristor module is connected to the output end of the control unit; the thyristor control end of the second thyristor module The terminal is connected with the output terminal of the control unit.
CN2011203465591U 2011-09-15 2011-09-15 Low-voltage dynamic reactive power three-phase single-phase hybrid filtering compensation device Expired - Lifetime CN202260466U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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Owner name: CHINA ROLLAY ELECTRIC (SHANGHAI) CO., LTD.

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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.

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Address after: Fengxian District Jinhui Town money highway 201407 Shanghai City No. 411 Building 2 room 115

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Granted publication date: 20120530