CN203398793U - Low-voltage dynamic reactive power compensation device - Google Patents
Low-voltage dynamic reactive power compensation device Download PDFInfo
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- CN203398793U CN203398793U CN201320439451.6U CN201320439451U CN203398793U CN 203398793 U CN203398793 U CN 203398793U CN 201320439451 U CN201320439451 U CN 201320439451U CN 203398793 U CN203398793 U CN 203398793U
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- power inverter
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- 239000003990 capacitor Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000003750 conditioning effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000009514 concussion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
- Y02E40/20—Active power filtering [APF]
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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 discloses a low-voltage dynamic reactive power compensation device which comprises a control system, an IGBT power converter, and a filter reactor. The filter reactor and the IGBT power converter are respectively connected with the control system. The control system consists of a soft-start contactor, a soft-start resistor, a master contactor, an external current transformer, a signal conditioning plate, and an FPGA controller. The IGBT power converter consists of a cascading multi-level power converter and an IGBT driver.
Description
Technical field
The utility model relates to a kind of reactive power compensator, relates in particular to a kind of low-voltage dynamic reactive power compensation.
Background technology
At the electrical network of industrial load prosperity, day power consumption is huge, and load is non-linear and impact, has caused multiple power quality problem, mainly comprises that power factor (PF) is low, harmonic content is high, three-phase imbalance, power rush, voltage dodge limit and voltage fluctuation.
The harmonic wave of electrical network and idle problem date are outstanding, and the safe operation of whole power supply-distribution system exists larger hidden danger.Therefore, countries in the world electric power system, has adopted reactive power compensator and harmonic treating apparatus to improve the quality of power supply of electrical network 4 in recent years one after another, due to the raising of the quality of power supply, also makes electric power system and industrial and mining enterprises obtain abundant return simultaneously.
Traditional reactive power compensator, because response speed is slow and the reason of the frequent scaling loss of machinery electric shock, cannot meet user's reactive power compensation demand.
Utility model content
The purpose of this utility model is to overcome the defect of prior art and a kind of low-voltage dynamic reactive power compensation is provided.
The utility model solves the technical scheme that its technical problem adopts: a kind of low-voltage dynamic reactive power compensation, comprises control system, IGBT power inverter, filter reactor; Described filter reactor is all connected with control system with IGBT power inverter, and described control system is comprised of soft contactor, soft resistance, main contactor, foreign current instrument transformer, signal regulating panel, FPGA controller; And described IGBT power inverter is comprised of cascade connection multi-level power inverter and IGBT driver.
Described filter reactor one end is connected with the foreign current instrument transformer of control system, and the other end is connected with the cascade connection multi-level power inverter of IGBT power inverter.
In parallel with main contactor after described soft contactor and soft resistance series connection, rear one end in parallel is connected with fast acting fuse, and the other end is connected with described foreign current instrument transformer.
Described cascade connection multi-level power inverter one end is connected with the direct current capacitor of control system, and the other end is connected with IGBT driver.
The direct current capacitor of described control system, direct current voltage sensor, signal regulating panel, FPGA controller connect successively, and described direct current capacitor is connected with cascade connection multi-level power inverter, and described FPGA controller is connected with IGBT driver.
Low-voltage dynamic reactive power compensation, first carries out soft start by soft contactor and soft resistance, and when capacitance voltage rises to 80% rated value, main contactor is closed, then is modulated and made capacitance voltage rise to rated value by PWM.During dynamic reactive compensation device normal operation, by foreign current instrument transformer Real-time Collection source current and voltage signal, deliver to signal conditioning circuit, by FPGA controller, extract all harmonic waves and reactive current again, after ovennodulation, output to drive circuit and trigger cascade connection multi-level IGBT converter, by the control to power inverter, output voltage that can regulating power converter, and then the electric current on adjusting reactor, make dynamic reactive compensation device absorb and send the reactive current satisfying the demands, realize the object of dynamic passive compensation; The electric current that can make dynamic reactive compensation device produce and instruction harmonic current equal and opposite in direction, single spin-echo simultaneously injects electrical network, makes mains side current waveform become sine, realizes the function of filtering harmonic wave.
The utility model dynamic reactive compensation device, can be applicable to remote distance power transmission, city secondary transformer station, arc furnace, milling train, elevator heavy industry load, electric locomotive power supply, wind energy turbine set field; Compared to the prior art, tool has the following advantages:
A, adopted and usingd the Active Power Filter Technology of IGBT power inverter as power semiconductor, have the advantages that fast response time, reliability are high, dynamically follow the tracks of filtering each harmonic, filtering performance possess the system parameter variations of not being subject to impact, without harmonic wave, amplify dangerous outstanding advantages, can improve the quality of power supply, be the energy-conservation solution of first-selection of dynamic passive compensation and harmonic wave control;
B, this dynamic reactive compensation device have the function of quick adjustment reactive power, can effectively maintain load side voltage, improve the voltage stability of electric power system; Can suppress voltage fluctuation and flicker; Can follow the variation of reactive load, realize the dynamic compensation of reactive power, line loss is dropped to minimum, fully provide, the utilance of defeated, power supply unit, reach energy-saving and cost-reducing effect;
C, this dynamic reactive compensation device is installed, not only can be in the reactive power of compensated line under normal condition, and can be in system failure situation, idle adjusting is quickly provided, damping system concussion, improves transmission system stability, thereby effectively improves power transmission capacity of pow.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model dynamic reactive compensation device.
In figure: 10, fast acting fuse; 11, soft contactor; 12, soft resistance; 13, main contactor; 14, foreign current instrument transformer; 15, signal regulating panel; 16, FPGA controller; 17, direct current capacitor; 18, direct current voltage sensor; 21, cascade connection multi-level power inverter; 22, IGBT driver; 3, filter reactor; 4, electrical network; 5, current transformer; 6, voltage transformer; 7, load 7.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, this specific embodiment, a kind of low-voltage dynamic reactive power compensation, comprises control system, IGBT power inverter, filter reactor; Described filter reactor is all connected with control system with IGBT power inverter, and described control system is comprised of soft contactor, soft resistance, main contactor, foreign current instrument transformer, signal regulating panel, FPGA controller; And described IGBT power inverter is comprised of cascade connection multi-level power inverter and IGBT driver.
Filter reactor one end is connected with the foreign current instrument transformer of control system, and the other end is connected with the cascade connection multi-level power inverter of IGBT power inverter.
In parallel with main contactor after soft contactor and soft resistance series connection, rear one end in parallel is connected with fast acting fuse, and the other end is connected with described foreign current instrument transformer.
Cascade connection multi-level power inverter one end is connected with the direct current capacitor of control system, and the other end is connected with IGBT driver.
The direct current capacitor of control system, direct current voltage sensor, signal regulating panel, FPGA controller connect successively, and described direct current capacitor is connected with cascade connection multi-level power inverter, and described FPGA controller is connected with IGBT driver.
This specific embodiment, can be applicable to remote distance power transmission, city secondary transformer station, arc furnace, milling train, elevator heavy industry load, electric locomotive power supply, wind energy turbine set field;
This specific embodiment, its major function has: a, dynamic compensation reactive power, reduce line loss, energy-saving and cost-reducing; B, dynamic filtering harmonic wave, improve the quality of power supply; C, control transmission system are stablized, and improve circuit transmission capacity; D, maintain load side voltage, strengthening system voltage stability; E, inhibition voltage fluctuation and flicker; F, compensating three-phase unbalance.
By reference to the accompanying drawings the utility model has been carried out to exemplary description above; obvious realization of the present utility model is not subject to the restrictions described above; as long as the various improvement that adopted technical solutions of the utility model to carry out; or say that without improvement design of the present utility model and technical scheme are applied to other occasions, all in protection range of the present utility model.
Claims (5)
1. a low-voltage dynamic reactive power compensation, comprises control system, IGBT power inverter, filter reactor; It is characterized in that, described filter reactor is all connected with control system with IGBT power inverter, and described control system is comprised of soft contactor, soft resistance, main contactor, foreign current instrument transformer, signal regulating panel, FPGA controller; And described IGBT power inverter is comprised of cascade connection multi-level power inverter and IGBT driver.
2. a kind of low-voltage dynamic reactive power compensation according to claim 1, is characterized in that, described filter reactor one end is connected with the foreign current instrument transformer of control system, and the other end is connected with the cascade connection multi-level power inverter of IGBT power inverter.
3. a kind of low-voltage dynamic reactive power compensation according to claim 1, it is characterized in that, in parallel with main contactor after described soft contactor and soft resistance series connection, rear one end in parallel is connected with fast acting fuse, and the other end is connected with described foreign current instrument transformer.
4. a kind of low-voltage dynamic reactive power compensation according to claim 1, is characterized in that, described cascade connection multi-level power inverter one end is connected with the direct current capacitor of control system, and the other end is connected with IGBT driver.
5. a kind of low-voltage dynamic reactive power compensation according to claim 1, it is characterized in that, the direct current capacitor of described control system, direct current voltage sensor, signal regulating panel, FPGA controller connect successively, and described direct current capacitor is connected with cascade connection multi-level power inverter, described FPGA controller is connected with IGBT driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439451.6U CN203398793U (en) | 2013-07-23 | 2013-07-23 | Low-voltage dynamic reactive power compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439451.6U CN203398793U (en) | 2013-07-23 | 2013-07-23 | Low-voltage dynamic reactive power compensation device |
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| Publication Number | Publication Date |
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| CN203398793U true CN203398793U (en) | 2014-01-15 |
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| CN201320439451.6U Expired - Fee Related CN203398793U (en) | 2013-07-23 | 2013-07-23 | Low-voltage dynamic reactive power compensation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107437810A (en) * | 2017-09-25 | 2017-12-05 | 国网上海市电力公司 | A kind of charging station stake Power Quality Comprehensive Treatment Device |
| CN108429268A (en) * | 2018-03-19 | 2018-08-21 | 科姆勒电气（安徽）有限公司 | Intelligent stillness wattless occurrence apparatus |
| US10218285B2 (en) | 2015-10-19 | 2019-02-26 | Siemens Aktiengesellschaft | Medium voltage hybrid multilevel converter and method for controlling a medium voltage hybrid multilevel converter |
-
2013
- 2013-07-23 CN CN201320439451.6U patent/CN203398793U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10218285B2 (en) | 2015-10-19 | 2019-02-26 | Siemens Aktiengesellschaft | Medium voltage hybrid multilevel converter and method for controlling a medium voltage hybrid multilevel converter |
| CN107437810A (en) * | 2017-09-25 | 2017-12-05 | 国网上海市电力公司 | A kind of charging station stake Power Quality Comprehensive Treatment Device |
| CN108429268A (en) * | 2018-03-19 | 2018-08-21 | 科姆勒电气（安徽）有限公司 | Intelligent stillness wattless occurrence apparatus |
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| 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: 20140115 |