CN202840530U - Electric energy low voltage dynamic reactive power compensation device - Google Patents
Electric energy low voltage dynamic reactive power compensation device Download PDFInfo
- Publication number
- CN202840530U CN202840530U CN2012205554452U CN201220555445U CN202840530U CN 202840530 U CN202840530 U CN 202840530U CN 2012205554452 U CN2012205554452 U CN 2012205554452U CN 201220555445 U CN201220555445 U CN 201220555445U CN 202840530 U CN202840530 U CN 202840530U
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- electric energy
- energy low
- reactive power
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- signal processing
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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 relates to an electric energy low voltage dynamic reactive power compensation device. The electric energy low voltage dynamic reactive power compensation device comprises a signal collection unit, a signal processing unit and an execution unit, wherein the signal collection unit is used for collecting system voltage and current signals, the signal processing unit is used for performing analog/digital (A/D) conversion, comparison and operation for the collected system reactive component signals and sending a control instruction, the execution unit acts according to the control of the signal processing unit to enable a thyristor switch to perform switching on and off operations, and a power capacitor bank is switched on or off. According to the electric energy low voltage dynamic reactive power compensation device, the contactless automatic switching on and off is utilized, a filter bank can be continuously and frequently switched on and off without affecting the service life of the switch and the capacitor, the system reactive value can be automatically detected, rapid and real-time compensation can be performed according to the reactive value required by the system, the power factor of a low-voltage electricity distribution grid and the carrying capacity of a power supply unit can be improved, the harmonic wave of the system is filtered and removed, the line loss is reduced, the use ratio of a transmission line of a transformer is improved, and the power supply qualities of a load end are improved.
Description
Technical field
The utility model relates to the No-Work Power Compensation Capacity in Electricity System equipment technical field, especially relates to a kind of dynamic-filter reactive compensation cabinet with the humorous wave energy of good control.
Background technology
Loadtype major part in the electric power system belongs to inductive load, add that electricity consumption enterprise generally uses power electronic equipment widely, the extensive use of power electronic equipment brings the improvement of operational environment to people and with the raising of electrical efficiency, but a large amount of non-linear load, high order harmonic component such as generations such as silicon controlled rectifier, frequency converters is also injected electrical network thereupon, cause the distortion of voltage and current, power utilization environment is extremely worsened, interact between the equipment, cisco unity malfunction when serious makes power factor of electric network lower.Lower power factor has reduced utilization rate of equipment and installations, has increased the power supply investment, has damaged quality of voltage, has reduced service life of equipment, has greatly increased line loss.In order to improve energy waste that power factor of electric network lowly brings and the factor of these unfavorable power supply productions, power factor of electric network is effectively improved.If obvious these reactive powers all will be provided and be transmitted at a distance by generator is irrational, also is impossible usually.Reasonable approach is exactly to produce reactive power in the place that needs reactive power, namely increases reactive power compensating apparatus and device.The electric energy low-voltage dynamic reactive power compensation can be realized the new device of dynamic passive compensation, burning voltage, filtering harmonic wave.
The utility model content
Technical problem to be solved in the utility model is, a kind of electric energy low-voltage dynamic reactive power compensation with reactive power compensation, voltage stabilization, energy filtering harmonic wave is provided, adopt thyristor as fling-cut switch, utilize Active Power Filter-APF as filter, when can realizing dynamically following the tracks of compensation, can realize again harmonic wave control.
For achieving the above object, technical solution of the present utility model is: the electric energy low-voltage dynamic reactive power compensation, comprise signal gathering unit, signal processing unit, performance element, wherein:
Signal gathering unit is used for acquisition system voltage and current signal;
Signal processing unit is used for to the idle component Q signal of the system that gathers, carry out A/D conversion, comparison and computing after, send control command;
Performance element moves according to the control of signal processing unit, thyristor switch is carried out thrown, cut operation, and power capacitor bank is dropped into or excision.
Further, described signal gathering unit comprises current sensor, voltage sensor.
Further, described signal processing unit comprises Intelligent reactive controller.
Further, described performance element is comprised of thyristor and power capacitor.
Operation principle of the present utility model is: signal gathering unit is sent system voltage and current signal into Intelligent reactive controller, the idle component Q of controller extraction system, through the A/D conversion, after comparison and the computing, send control command by controller, thyristor switch is carried out to be thrown, cut operation, power capacitor bank is dropped into or excision, adopt thyristor as fling-cut switch, has speed fast, noiselessness, no-flashy-flow, without advantages such as overvoltage, dropping into simultaneously the capacitor group when system voltage equates with condenser voltage does not need capacitor discharge again to drop into, and the capacitor group can frequently be used.
The beneficial effects of the utility model are: (1) adopts contactless automatic switching, continuous frequent switching bank of filters and do not affect life-span of switch and capacitor, can the idle amount of automatic checkout system, according to the needed idle amount of system carry out fast, real-Time Compensation, improve the power factor of low-voltage network and the bearing capacity of power supply unit, the harmonic wave of filtering appts reduces line loss, improve the utilance of the transmission line of transformer, improve the power supply quality of load end.
(2) adopt thyristor as fling-cut switch, have that speed is fast, noiselessness, no-flashy-flow, without advantages such as overvoltage, this product drops into the capacitor group when system voltage equates with condenser voltage does not simultaneously need capacitor discharge again to drop into, and the capacitor group can frequently be used.
(3) energy-saving and cost-reducing, strengthen power system network green and stable operation, the aspects such as raising user economic benefit all have important practical significance.
Description of drawings
Fig. 1 is operation principle block diagram of the present utility model.
In the accompanying drawing, 1, signal gathering unit 2, signal processing unit 3, performance element
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, the electric energy low-voltage dynamic reactive power compensation, comprise signal gathering unit 1, signal processing unit 2, performance element 3, wherein: signal gathering unit 1 comprises current sensor, voltage sensor, be used for acquisition system voltage and current signal, the quantity of described current transformer is three, to satisfy the current sample needs of three-phase total compensation, can the idle amount of automatic checkout system, dynamic response time is fast.
Signal processing unit 2 is comprised of Intelligent reactive controller and circuits for triggering, be used for idle component Q signal to the system that gathers, carry out A/D conversion, comparison and computing after, send control command, control structure is simple, powerful, reliability is high, can realize the capacitor group of switching filters, opening-closing capacitor bank and switching band filter reactor, controller adopts high-performance microprocessor, control precision is high, optional automatic control and manually control, and antijamming capability is strong.
Performance element 3 is comprised of thyristor and power capacitor, control according to signal processing unit is moved, thyristor switch is carried out to be thrown, cut operation, power capacitor bank is dropped into or excision, thyristor is bidirectional thyristor or unidirectional anti-parallel thyristor, thyristor is under the triggering signal control that controller sends, can move at the switching that l0ms-20ms finishes in the time period all described compensation condenser groups, voltage zero-cross is open-minded, current over-zero turn-offs, do not produce and shove and overvoltage, dynamic response time is fast, and compensation effect is good, be applicable to load variations large, the electricity consumption occasion that impact is strong adopts thyristor as fling-cut switch, has speed fast, noiselessness, no-flashy-flow, without advantages such as overvoltage.Dropping into simultaneously the capacitor group when system voltage equates with condenser voltage does not need capacitor discharge again to drop into, and the capacitor group can frequently be used.
Operation principle of the present utility model is: signal gathering unit is sent system voltage and current signal into Intelligent reactive controller, the idle component Q of controller extraction system, after A/D conversion, comparison and computing, send control command by controller, thyristor switch is carried out thrown, cut operation, power capacitor bank is dropped into or excision.Adopt thyristor as fling-cut switch, have that speed is fast, noiselessness, no-flashy-flow, without the advantages such as overvoltage simultaneously when system voltage equates with condenser voltage input capacitor group do not need capacitor discharge again to drop into, the capacitor group can frequently be used.
It is to be noted; the utility model is not limited to above-mentioned execution mode; any simple modification, Combination application, equivalent variations and modification that any those skilled in the art do above-described embodiment in based on technical solutions of the utility model all belong in the protection range of the present utility model.
Claims (4)
1. electric energy low-voltage dynamic reactive power compensation, it is characterized in that: it comprises signal gathering unit, signal processing unit, performance element, wherein: signal gathering unit is used for acquisition system voltage and current signal; Signal processing unit is used for to the idle component Q signal of the system that gathers, carry out A/D conversion, comparison and computing after, send control command; Performance element moves according to the control of signal processing unit, thyristor switch is carried out thrown, cut operation, and power capacitor bank is dropped into or excision.
2. electric energy low-voltage dynamic reactive power compensation according to claim 1, it is characterized in that: described signal gathering unit comprises current sensor, voltage sensor.
3. electric energy low-voltage dynamic reactive power compensation according to claim 1, it is characterized in that: described signal processing unit comprises Intelligent reactive controller.
4. electric energy low-voltage dynamic reactive power compensation according to claim 1, it is characterized in that: described performance element is comprised of thyristor and power capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205554452U CN202840530U (en) | 2012-10-28 | 2012-10-28 | Electric energy low voltage dynamic reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205554452U CN202840530U (en) | 2012-10-28 | 2012-10-28 | Electric energy low voltage dynamic reactive power compensation device |
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| Publication Number | Publication Date |
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| CN202840530U true CN202840530U (en) | 2013-03-27 |
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| CN2012205554452U Expired - Fee Related CN202840530U (en) | 2012-10-28 | 2012-10-28 | Electric energy low voltage dynamic reactive power compensation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130033A (en) * | 2016-07-18 | 2016-11-16 | 安徽得润电气技术有限公司 | A kind of low-voltage reactive power compensation device detecting current/voltage real-Time Compensation |
| CN109217308A (en) * | 2018-10-23 | 2019-01-15 | 重庆重开电气有限公司 | Energy saving and efficiency increasing system based on power monitoring |
| CN109213054A (en) * | 2018-11-19 | 2019-01-15 | 国网江西省电力有限公司培训中心 | A kind of capacitor intelligence control system and its control method |
| CN110460064A (en) * | 2018-05-07 | 2019-11-15 | 成都市中朋达电气有限公司 | Mineral hot furnace intelligent powerless compensation system |
-
2012
- 2012-10-28 CN CN2012205554452U patent/CN202840530U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130033A (en) * | 2016-07-18 | 2016-11-16 | 安徽得润电气技术有限公司 | A kind of low-voltage reactive power compensation device detecting current/voltage real-Time Compensation |
| CN110460064A (en) * | 2018-05-07 | 2019-11-15 | 成都市中朋达电气有限公司 | Mineral hot furnace intelligent powerless compensation system |
| CN109217308A (en) * | 2018-10-23 | 2019-01-15 | 重庆重开电气有限公司 | Energy saving and efficiency increasing system based on power monitoring |
| CN109213054A (en) * | 2018-11-19 | 2019-01-15 | 国网江西省电力有限公司培训中心 | A kind of capacitor intelligence control system and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20151028 |
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| EXPY | Termination of patent right or utility model |