CN204886196U - Intelligently move muddy SVG - Google Patents
Intelligently move muddy SVG Download PDFInfo
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- CN204886196U CN204886196U CN201520586792.5U CN201520586792U CN204886196U CN 204886196 U CN204886196 U CN 204886196U CN 201520586792 U CN201520586792 U CN 201520586792U CN 204886196 U CN204886196 U CN 204886196U
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- reactive compensation
- svg
- control box
- reactive
- rack
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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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- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model relates to a reactive power compensation field in the electric power system, in particular to intelligently move muddy SVG. The utility model discloses well intelligently move muddy SVG is in including rack and setting control box in the rack, be provided with the reactive compensation module in the control box, the reactive compensation module is including main control unit, current transformer group and the reactive compensation unit of establishing ties. The utility model discloses the control box sets up in the rack, and the main control unit of the reactive compensation module in the control box carries out the accurate control, and the reactive compensation circuit in the reactive compensation unit carries out reactive compensation, and electric capacity switching circuit restraines unbalanced three phase, guarantees electric wire netting input three -phase equilibrium, restraines the impulse current who probably causes when dropping into the electric wire netting, and filter circuit can restrain enlargeing harmonic current. The utility model discloses compact structure, the control operation of being convenient for, unified control, the input circuit three -phase equilibrium, the harmonic generation does not carry out dynamic reactive compensation.
Description
Technical field
The utility model relates to reactive power compensation field in electric power system, particularly intelligent dynamic mixed SVG.
Background technology
In the alternating current circuit with inductance and electric capacity, the magnetic field of inductance or the portion of time of the electric field of electric capacity in one-period absorb energy from power supply, energy is returned power supply again by another part time, within the whole cycle, average power is zero, there is no energy ezpenditure, but energy exchanges back and forth between power supply and inductance or electric capacity, the maximum of energy exchanging rate is called reactive power.Although reactive power does not have energy ezpenditure, in actual electric network, reactive power can produce very large active loss and also can produce very large voltage-drop along delivering path in transmitting procedure, affects power supply quality.Fluctuation based on this reason reactive power can cause the fluctuation of line voltage.The impact of fluctuation on voltage of power of active power is less by contrast.Along with the development and improvement of electric power system, to the stability of electric power system and the requirement of power supply quality more and more higher, and the stability of electrical network with idle effectively regulate fast directly related.Therefore, electric power system carries out the demand of quick dynamic compensation more and more too to reactive power.
Last century late nineteen eighties, there is a new technology flexible AC transmitting system, the latest development achievement and the modern control technology that it applies power electronic technology realize AC transmission system parameter controlling fast flexibly down to network configuration, to realizing the reasonable distribution of transmission power. reduce power loss and cost of electricity-generating, increase substantially the stability of a system, reliability.SVG, as its important power quality control technology, has many advantages and feature in dynamic passive compensation field, represents the developing direction of following Technology of Dynamic Reactive Power Compensation.
In science and technology, today of economic develop rapidly, each side of society proposes more and more higher requirement to power supply quality, except require power supply reliable continuously except, also wish supply power voltage, frequency stabilization, waveform is good, particularly with the fast development of telecommunication industry, as electronic computer, communication equipment, the complex precise equipment such as automatic assembly line are just more strict to the requirement of power supply quality, to power-supply fluctuation and various interference ratio electromechanical equipment in the past also more responsive, the deterioration of any power supply quality all may cause the Quality Down of product even to damage, have a strong impact on people to produce normally, life.In addition, in modern power network, the inductive loads such as motor, main frequency furnace, fluorescent lamp occupy quite large proportion, and they also need to absorb a large amount of reactive powers while consumption active power.The appearance of reactive power not only can cause generator output to decline, and equipment for power transmission and distribution efficiency reduces, but also adds network loss, causes energy waste, has had a strong impact on power supply quality.Install in electrical network after reactive-load compensation equipment, the reactive power of inductive reactance institute tip consumption can be provided, improve the power factor of load, be same as and decrease electric network source and provide to inductive load, and the reactive power of being carried by circuit, owing to decreasing the flowing of reactive power in electrical network, so, the electric energy loss that circuit and transformer cause because of conveying reactive power can be reduced, reach energy-conservation effect.In addition, non-linear electrical equipment in electric power system in recent years, particularly power electronic equipment (as: phase controlled rectifier, RHVC) increase rapidly and apply increasingly extensive, this makes electric energy be utilized more fully on the one hand, a large amount of reactive currents is made again to inject electrical network on the other hand, these reactive powers occurred in utility network, equipment and line loss will be caused to increase, cause voltage flicker, frequency change and three-phase imbalance, cause the quality of power supply severe exacerbation of electrical network, affect power transmission efficiency and equipment life, also can affect the economic benefit of power supply enterprise simultaneously, the safe operation of electric power system is even injured time serious.
Therefore, in order to effectively improve the quality of power supply, ensureing the safe, stable of electrical network and economical operation, control and compensation must be carried out to reactive power.So, research and development reactive power compensation technology, how better, more effectively, more optimally dynamic compensation is carried out to reactive power, just become in current electric power system, power electronic technology and control research field the important topic being badly in need of solving, just receiving domestic and international concern in many ways.Therefore, be building energy conservation society, the peaceful property effectively improving electric power system, improve power supply quality, be necessary the dynamic SVG of the mixing of development of new.
Utility model content
In order to overcome deficiency described above, the purpose of this utility model is to provide a kind of cost that effectively can reduce reactive power compensation, can give full play to the dynamic SVG device of intelligent mixing of the compensate function of SVG.
The technical scheme in the invention for solving the technical problem is:
Intelligent dynamic mixed SVG, wherein, comprises rack and is arranged on control box in described rack; Be provided with reactive compensation module in described control box, described reactive compensation module comprises the main control unit of series connection, current transformer group and reactive compensation unit; Described reactive compensation unit comprises reactive power compensation circuit in parallel, capacitor switching circuit and filter circuit, described reactive power compensation circuit comprises SVG in parallel and the first electric capacity, described capacitor switching circuit comprises the first thyristor groups and the three phase capacitance of series connection, and described filter circuit comprises the second thyristor groups and second electric capacity of series connection.
Improve as one of the present utility model, described first thyristor groups and the second thyristor groups all comprise antiparallel two thyristors.
As further improvement of the utility model, described main control unit comprises control chip, fuse, contactor and soft magnetism reactor.
Further improve as of the present utility model, described current transformer group comprises three current transformers.
Further improve as of the present utility model, described control box is movably connected in described rack.
Further improve as of the present utility model, in described control box, be also provided with cooling fan and louvre.
Further improve as of the present utility model, described control box is provided with control panel, described rack offers the window corresponding with described control panel, described rack also arranges indicator light and emergency stop switch.
Control box of the present invention is arranged in rack, the main control unit of the reactive compensation module in control box accurately controls, reactive power compensation circuit in reactive compensation unit carries out reactive power compensation, capacitor switching circuit suppresses three-phase imbalance, ensure electrical network input three-phase equilibrium, suppress the impulse current that may cause when dropping into electrical network, filter circuit can suppress the amplification to harmonic current.Compact conformation of the present invention, is convenient to control operation, and unification controls, and input circuit three-phase equilibrium, does not produce harmonic wave, carries out dynamic passive compensation.
Accompanying drawing explanation
For ease of illustrating, the utility model is described in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of reactive compensation module of the present utility model;
Reference numeral: 1-rack, 11-window, 12-indicator light, 13-emergency stop switch, 2-control box, 21-control panel, 22-reactive compensation module, 23-main control unit, 24-current transformer group, 25-reactive power compensation circuit, 26-capacitor switching circuit, 27-filter circuit.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1 and Figure 2, intelligent dynamic mixed SVG of the present utility model, comprises rack 1 and is arranged on control box 2 in rack; Control box 2 can be fixed in rack 1, also can as drawer type, and control box 2 is movably connected in rack 1, when rack 1 does not have a power failure, can extract control box 2 out, be convenient to maintenance and the protection of control box 2 like this.
For the ease of controlling and operation, control box 2 is provided with control panel 21, rack 1 offers the window 11 corresponding with control panel 21, rack 1 is also arranged indicator light 12 and emergency stop switch 13, conveniently carry out operating and controlling outside rack 1, safe and reliable, and when going wrong, indicator light 12 can be bright, can be undertaken out of service by turning off emergency stop switch 13.
Be provided with reactive compensation module 22 in control box 2, reactive compensation module 22 comprises the main control unit 23 of series connection, current transformer group 24 and reactive compensation unit; Main control unit 23 can carry out control survey detection, trigger control circuit, faulty indication; Reactive compensation unit comprises reactive power compensation circuit 25 in parallel, capacitor switching circuit 26 and filter circuit 27, and reactive power compensation circuit 25 comprises SVG in parallel and the first electric capacity, can give full play to the no-power compensation function of SVG, even can bidirectional compensating;
Capacitor switching circuit 26 comprises the first thyristor groups and the three phase capacitance of series connection, can suppress three-phase imbalance, ensures electrical network input three-phase equilibrium, suppresses the impulse current that may cause when dropping into electrical network;
Filter circuit comprises the second thyristor groups and second electric capacity of series connection, and the second electric capacity can ground connection, can suppress the amplification to harmonic current.
Further, the first thyristor groups and the second thyristor groups all comprise antiparallel two thyristors.
More accurate in order to control, do not produce harmonic wave, loss is little, and main control unit 23 comprises control chip, fuse, contactor and soft magnetism reactor.
Further, current transformer group comprises three current transformers.
In order to dispel the heat to reactive compensation module 22, being unlikely to overheated, in control box 2, being also provided with cooling fan and louvre.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. intelligent dynamic mixed SVG, is characterized in that, comprise rack and be arranged on control box in described rack; Be provided with reactive compensation module in described control box, described reactive compensation module comprises the main control unit of series connection, current transformer group and reactive compensation unit; Described reactive compensation unit comprises reactive power compensation circuit in parallel, capacitor switching circuit and filter circuit, described reactive power compensation circuit comprises SVG in parallel and the first electric capacity, described capacitor switching circuit comprises the first thyristor groups and the three phase capacitance of series connection, and described filter circuit comprises the second thyristor groups and second electric capacity of series connection.
2. intelligent dynamic mixed SVG according to claim 1, it is characterized in that, described first thyristor groups and the second thyristor groups all comprise antiparallel two thyristors.
3. intelligent dynamic mixed SVG according to claim 2, it is characterized in that, described main control unit comprises control chip, fuse, contactor and soft magnetism reactor.
4. intelligent dynamic mixed SVG according to claim 3, it is characterized in that, described current transformer group comprises three current transformers.
5. intelligent dynamic mixed SVG according to claim 4, it is characterized in that, described control box is movably connected in described rack.
6. intelligent dynamic mixed SVG according to claim 5, is characterized in that, be also provided with cooling fan and louvre in described control box.
7. intelligent dynamic mixed SVG according to claim 6, is characterized in that, described control box is provided with control panel, described rack offers the window corresponding with described control panel, described rack is also provided with indicator light and emergency stop switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586792.5U CN204886196U (en) | 2015-08-06 | 2015-08-06 | Intelligently move muddy SVG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520586792.5U CN204886196U (en) | 2015-08-06 | 2015-08-06 | Intelligently move muddy SVG |
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| Publication Number | Publication Date |
|---|---|
| CN204886196U true CN204886196U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520586792.5U Active CN204886196U (en) | 2015-08-06 | 2015-08-06 | Intelligently move muddy SVG |
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| CN (1) | CN204886196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381420A (en) * | 2021-07-29 | 2021-09-10 | 江苏宜源电力设备有限公司 | Multifunctional low-voltage reactive compensation filtering complete device |
-
2015
- 2015-08-06 CN CN201520586792.5U patent/CN204886196U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381420A (en) * | 2021-07-29 | 2021-09-10 | 江苏宜源电力设备有限公司 | Multifunctional low-voltage reactive compensation filtering complete device |
| CN113381420B (en) * | 2021-07-29 | 2023-08-29 | 江苏宜源电力设备有限公司 | Multifunctional low-voltage reactive compensation filtering complete device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |