CN202524094U - Harmonic wave var compensator of high stability - Google Patents
Harmonic wave var compensator of high stability Download PDFInfo
- Publication number
- CN202524094U CN202524094U CN2012201057893U CN201220105789U CN202524094U CN 202524094 U CN202524094 U CN 202524094U CN 2012201057893 U CN2012201057893 U CN 2012201057893U CN 201220105789 U CN201220105789 U CN 201220105789U CN 202524094 U CN202524094 U CN 202524094U
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- thyristor
- circuit
- controlled reactor
- load
- compensating apparatus
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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 utility model relates to a harmonic wave var compensator of high stability. The harmonic wave var compensator is connected in parallel with a power network and is connected with a load. The harmonic wave var compensator includes a filter capacitor circuit, a thyristor controlled reactor circuit, and a control circuit. The filter capacitor circuit and the thyristor controlled reactor circuit are connected in parallel with the power network respectively. The control circuit is connected with the thyristor controlled reactor circuit and the load. Compared with the prior art, the harmonic wave var compensator of the high stability has the advantages of low cost, rapid response, and obvious energy-conservation and voltage-stabilization effects.
Description
Technical field
The utility model relates to a kind of compensation harmonic and idle device, especially relates to the high harmonic reactive compensating apparatus of a kind of stability.
Background technology
Along with the raising of development of modern industry and living standards of the people, also increasingly high to the requirement of the quality of power supply.Therefore improve constantly the task of top priority that power supply quality becomes power department.Reactive balance harmonic content is two important indicators weighing Economical Operation of Power Systems.
Harmonic source in the electrical network is divided into two types substantially: one type for containing the various power electronic equipments of semiconductor element; Like various rectifications, inverter and thyristor controllable switch device etc.; They open and close different circuit according to certain rules, and harmonic current is injected electrical network; Another kind of for containing the harmonic source of electric arc and ferromagnetic non-linear equipment, comprise transformer, reactor etc. like fluorescent lamp, arc furnace and various equipment unshakable in one's determination.Domestic electric appliance belongs to above-mentioned two rahmonic sources, though its capacity is little, therefore enormous amount also is very important harmonic source.In addition, for the electric power system three phase supply, three-phase imbalance load also is typical harmonic source, makes the electric current of electric power system and voltage waveform produce distortion.
Active power filtering equipment can be realized the fine compensation of harmonic wave, if still take into account the function of compensating reactive power, cost is higher.Therefore increasing industry begins to approve passive+active filtering compensation scheme.Typical application is exactly SVC SVC.
SVC (Static Var Compensator)---SVC, it is static for slewings such as generator, compensator.It can change idle that it sends fast, has stronger idle regulating power, can be electric power system dynamic reactive power supply, regulating system voltage are provided, and can export capacitive reactive power during, heavy load lower when system voltage; It is idle that, the light hours higher when system voltage can be exported perception, and supply power voltage is compensated to a reasonable level.SVC exerts oneself through dynamic adjustments is idle, and the busbar voltage that causes when suppressing the operation of fluctuation impact load changes, and helps transient voltage and recovers, and improves the system voltage maintenance level.
The utility model content
The purpose of the utility model is exactly in order to overcome defective such as cost height that above-mentioned prior art exists, low-response a kind of bidirectional modulation that realizes perception and capacitive reactive power rapidly, continuously to be provided; Realize the asymmetric and idle harmonic comprehensive compensation of three-phase load, the significantly stable high harmonic reactive compensating apparatus of energy-conservation and voltage regulation result.
The purpose of the utility model can realize through following technical scheme:
The harmonic reactive compensating apparatus that a kind of stability is high; This device is connected in parallel on the electrical network; And with the load be connected; Described device comprises filter-capacitor circuit, thyristor-controlled reactor circuit and control circuit, and described filter-capacitor circuit and thyristor-controlled reactor circuit are parallelly connected with electrical network respectively, and described control circuit is connected with thyristor-controlled reactor circuit, load respectively;
Filter-capacitor circuit is offset the perceptual reactive current in the electrical network in real time; The reactive requirement of control circuit real-time tracking load; The triggering of thyristor changes the size of current of thyristor-controlled reactor circuit, the compensation network reactive current constantly in the control thyristor-controlled reactor circuit.
Described filter-capacitor circuit comprises three resonance reactors and three fixed capacitors, and described three resonance reactor one ends connect electrical network respectively, and the other end connects corresponding fixed capacitor one end, described three fixed capacitor other end short circuits.
Described thyristor-controlled reactor circuit comprises thyristor groups and the reactor that is connected, and described thyristor groups is that a plurality of thyristor inverse parallels form, and thyristor groups adopts vertical laminated structure.
The type of cooling of described thyristor groups is the totally enclosed type water-cooling system.
Described thyristor is an ETT type thyristor, and triggering mode is the photoelectricity triggering that grid side is directly got ability.
Described control circuit comprises dsp chip and monitoring unit, and said dsp chip is connected with load, monitoring unit respectively, and described monitoring unit is connected with the thyristor-controlled reactor circuit, and described monitoring unit is connected with host computer through communication controller;
Energy information in the described dsp chip real-time tracking load, and the reactive requirement of analysis load send to monitoring unit with analysis result, and monitoring unit shows this analysis result, and the triggering of control thyristor constantly.
Compared with prior art, the utlity model has following advantage:
1) real-time tracking load variations, the dynamic compensation reactive power improves the system power factor;
2) dynamic response time is fast;
3) mode that adopts capacitor and thyristor-controlled reactor type SVC to match, the variation of real-time tracking power network current realizes dynamic stepless compensation to power system reactive power;
4) defencive function is complete, has overvoltage, under-voltage, overcurrent, protection such as overheated, and operational reliability is high;
5) maintenance is little, and operating cost is low;
6) controller has high reliability, and simple to operate, when being connected with system, need not consider the AC system phase sequence, and the compensation arrangement safeguard measure is complete;
7) the device circuit parameter is well-designed, and caloric value is little, compact equipment, and floor space is little;
8) improve quality of voltage, systems stabilisation voltage suppresses voltage flicker, can be in parallel installed with, and very easily expands capacity.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
As shown in Figure 1; The harmonic reactive compensating apparatus that a kind of stability is high; This device is connected in parallel on the electrical network, and is connected with load 6, and device comprises filter-capacitor circuit, thyristor-controlled reactor circuit and control circuit 5; Filter-capacitor circuit and thyristor-controlled reactor circuit are parallelly connected with electrical network respectively, and control circuit is connected with thyristor-controlled reactor circuit, load respectively; Filter-capacitor circuit comprises that three resonance reactors 1 and 2, three resonance reactor 1 one ends of three fixed capacitors connect electrical network respectively, and the other end connects corresponding fixed capacitor 2 one ends, three fixed capacitor 2 other end short circuits; The thyristor-controlled reactor circuit comprises the thyristor groups 3 and reactor 4 that is connected; Thyristor groups 3 forms for a plurality of thyristor inverse parallels; Adopt vertical laminated structure; Its type of cooling is the totally enclosed type water-cooling system, and the thyristor of employing is an ETT type thyristor, and its triggering mode is the photoelectricity triggering that grid side is directly got ability.
When the harmonic reactive compensating apparatus that aforementioned stable property is high was worked, filter-capacitor circuit was offset the perceptual reactive current in the electrical network in real time, the energy information in the dsp chip real-time tracking load in the control circuit 5; And the reactive requirement of analysis load; Analysis result is sent to monitoring unit, and monitoring unit shows this analysis result, and controls the triggering moment of thyristor in the thyristor-controlled reactor circuit; Change the size of current of thyristor-controlled reactor circuit, the compensation network reactive current.
Claims (5)
1. harmonic reactive compensating apparatus that stability is high; This device is connected in parallel on the electrical network; And with the load be connected, it is characterized in that described device comprises filter-capacitor circuit, thyristor-controlled reactor circuit and control circuit; Described filter-capacitor circuit and thyristor-controlled reactor circuit are parallelly connected with electrical network respectively, and described control circuit is connected with thyristor-controlled reactor circuit, load respectively.
2. the high harmonic reactive compensating apparatus of a kind of stability according to claim 1; It is characterized in that; Described filter-capacitor circuit comprises three resonance reactors and three fixed capacitors; Described three resonance reactor one ends connect electrical network respectively, and the other end connects corresponding fixed capacitor one end, described three fixed capacitor other end short circuits.
3. the high harmonic reactive compensating apparatus of a kind of stability according to claim 1 is characterized in that described thyristor-controlled reactor circuit comprises thyristor groups and the reactor that is connected, and described thyristor groups is that a plurality of thyristor inverse parallels form.
4. the high harmonic reactive compensating apparatus of a kind of stability according to claim 3 is characterized in that, described thyristor is an ETT type thyristor.
5. the high harmonic reactive compensating apparatus of a kind of stability according to claim 1; It is characterized in that; Described control circuit comprises dsp chip and monitoring unit, and said dsp chip is connected with load, monitoring unit respectively, and described monitoring unit is connected with the thyristor-controlled reactor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201057893U CN202524094U (en) | 2012-03-19 | 2012-03-19 | Harmonic wave var compensator of high stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201057893U CN202524094U (en) | 2012-03-19 | 2012-03-19 | Harmonic wave var compensator of high stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202524094U true CN202524094U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201057893U Expired - Lifetime CN202524094U (en) | 2012-03-19 | 2012-03-19 | Harmonic wave var compensator of high stability |
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| CN (1) | CN202524094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347247A (en) * | 2013-07-25 | 2015-02-11 | 青岛菲特电器科技有限公司 | Controllable electric reactor based on magnetic flow control and PWM control combination |
-
2012
- 2012-03-19 CN CN2012201057893U patent/CN202524094U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347247A (en) * | 2013-07-25 | 2015-02-11 | 青岛菲特电器科技有限公司 | Controllable electric reactor based on magnetic flow control and PWM control combination |
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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: LIVESINE ELECTRIC (SHANGHAI) CO., LTD. Free format text: FORMER NAME: SHANGHAI DOUBLE X TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201108 Shanghai, Minhang District, Hong Jian Road, No. third, building 1, building 99, 2 Patentee after: Leith electric (Shanghai) Co. Ltd. Address before: 200240 C building, No. 4299 Jin Du Road, Shanghai, Minhang District, 1-773 Patentee before: Shanghai Double X Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
| CX01 | Expiry of patent term |