CN202930950U - Automatic balancing optimal active compensation device - Google Patents
Automatic balancing optimal active compensation device Download PDFInfo
- Publication number
- CN202930950U CN202930950U CN 201220202456 CN201220202456U CN202930950U CN 202930950 U CN202930950 U CN 202930950U CN 201220202456 CN201220202456 CN 201220202456 CN 201220202456 U CN201220202456 U CN 201220202456U CN 202930950 U CN202930950 U CN 202930950U
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- cpu
- compensation device
- capacitor
- 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
- Y02E40/30—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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The utility model discloses an automatic balancing optimal active compensation device. The device includes an imbalance adjustment controller, a single-phase power capacitor, a capacitor bank multifunctional braiding switch and a breaker, and has a structure as follows: a current/voltage sampling apparatus in the imbalance adjustment controller is connected with a CPU (a central processing unit) through an optoelectronic isolation multi-way switch and an A/D converter; the CPU is connected with a keyboard, a display and a data memory; the CPU is connected to the external network through RS485 and RS232 communication interfaces; and data calculated by the CPU respectively drives different switches through a protection and isolation circuit. If applied in a three-phase current imbalance compensation system, the automatic balancing optimal active compensation device has more excellent performance than present compensation devices of any other forms, can raise the power-saving effect by more than 30% than a common reactive compensation device, and can be used to realize single-phase, two-phase and three-phase compensation and three-phase balance for automatically adjusting active load.
Description
Technical field
This project belongs to the novel Static VAR Compensation of sub-field, " optical, mechanical and electronic integration " field " electric power information and automation " " the novel power saving technology that is used for electrical power trans mission/distribution system and enterprise " direction.
Background technology
In the rural power grids or city net electric power system of low voltage three-phase four-wire system, because the user mostly is single-phase load, and payload and the difference of electricity consumption time, in electrical network, three alternate unsymmetrical currents are ubiquitous, this electricity consumption unbalance condition does not possess regularity, can't predict in advance, also can't effectively improve.The power factor of adding every phase load also is not quite similar, and just usually making needs the reactive power that compensates widely different in every phase loop.Be that three-phase compensates or phase splitting compensation all can not fundamentally solve the imbalance problem of three-phase current effectively, can't adapt to the requirement of new model, new environment.At present, in the urgent need to adjust the novel reactive power compensation technology of uneven active current when bucking-out system is idle.The birth of the meritorious Optimization Compensation device of autobalance has solved this difficult problem effectively, has the ability of adjusting uneven active current when bucking-out system is idle.
Summary of the invention
The autobalance Optimization Compensation device of gaining merit has the effect of adjusting uneven active current when bucking-out system is idle.Its notional result can make three-phase activity coefficient all compensate to 1, and three-phase current is adjusted to balance.Practical application shows, three-phase activity coefficient is compensated to more than 0.98, make unsymmetrical current adjust to the transformer rated current ± 10% in, line loss reduces 5-50%.
The technical solution of the utility model is, the meritorious Optimization Compensation device of autobalance comprises adjusts unbalance control device, multi-functional marshalling switch, circuit breaker, Monophase electric power capacitor, it is characterized in that: the data storage of adjustment unbalance control device has been stored and has been used the concept of fuzzy mathematics to set up Mathematical Modeling, drawn meritorious, the idle adjusting criterion of smeared out boundary, ARM is with the voltage U of the three-phase and four-line low-tension supply bus that collects
a, U
b, U
CElectric current I
a, I
b, I
cThereby, draw load, power factor, the reactive power of power source bus, draw under the target power factor to get the reactive requirement amount.By each method that reaches between phase and phase each mutually and access rightly some power capacitors between zero line in the three-phase and four-line low-voltage distribution system, utilized dexterously the inductance in the load loop, not only make the power factor of each phase all obtain good compensation, make simultaneously the active current of each phase reach balance, reach ideal current balance and the power factor of supply network requirement, reach the purpose that reduces line loss.
The central processing unit of adjusting the unbalance control device adopts 32 of state-of-the art Philips ARM high performance chips, 32 A/D conversion chips of A/D converter.
The utility model utilizes the concept of fuzzy mathematics to set up Mathematical Modeling, drawn the idle adjusting criterion of smeared out boundary, its feature is the smeared out boundary that voltage fixing in Jiang Jiu district figure, idle upper and lower limit border changes over influence by voltage, the width of its borderline region can be adjusted according to concrete switching boundary condition, and has obtained the No.12 District FUZZY ALGORITHMS FOR CONTROL.This fuzzy algorithmic approach is to control target take voltage, power factor, meritorious, reactive power, in the situation that guarantee minimum to the capacitor group switching number of times, by each method that reaches between phase and phase each mutually and access rightly some power capacitors between zero line in the three-phase and four-line low-voltage distribution system, reach desired voltage and the power factor of supply network requirement.
The utlity model has following innovative point: Monophase electric power capacitor and 8 400V three-phase capacitors that 1. 12 rated voltage 400V are housed in this device, under the control of adjusting the unbalance control device, make every capacitor both can access between phase line and phase line by multi-functional marshalling switch, also can access between phase line and zero line, have the effect of adjusting uneven active current when bucking-out system is idle, both take into account.Therefore having the characteristics of " one-machine-multi-function ", is that any compensation arrangement does not replace.2. this assembly first is adjusted uncompensated load, can not mend altogether raising if power factor reaches ideal value, so realized common benefit, mend mutually, line is mended, the function of load adjustment.
The utility model is a management system by RS45/232 communication port or GPRS wireless public network with Surveillance center and the link of each compensation arrangement, and each compensation arrangement has the function (but remote measurement three-phase voltage, electric current, active power, reactive power, power factor and integral point every day three-phase voltage, current limit and time of occurrence constantly) of monitoring place distribution transformer load.The background monitoring center can be read historical data (storage) and the real time data of each compensation arrangement place distribution transformer at random, and carries out this device of remote control after statistical analysis by the background manage software system.
The utility model adopts unique cabinet body combined structure, and every group of electric capacity all has independently isolating switch, when a certain group of electric capacity breaks down, can in the situation that do not affect other capacitance group operations, separately it be overhauled.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is schematic diagram of the present utility model;
Accompanying drawing 3 is scheme of installation of the present utility model;
In figure, 1, adjust the unbalance control device; 2, capacitor marshalling switch; 3, circuit breaker; 4, Monophase electric power capacitor; 5, current transformer; 6, three-phase and four-line low-tension supply bus; 7, Surge Protector.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
Accompanying drawing 3 shows the meritorious Optimization Compensation device scheme of installation of autobalance.The utility model can be arranged on electric pole below transformer platform with support, when on transformer platform during available free position, also can be directly installed on transformer platform.For ease of Operation and Maintenance, to leave (〉=1 meter) sufficient space before and after cabinet.
In figure, connect power line one end of the present utility model and be connected on the transformer secondary knife switch by A, B, C phase sequence, the other end is connected on 1,3,5 ends of air switch in the utility model, and zero line is connected on zero line pin.Three current transformers are enclosed within respectively network transformer output (before the transformer secondary knife switch) by A, B, C phase sequence, and fixation.Instrument transformer secondary lead-out wire adds sheath to be received on the interior auxiliary terminal block (90-0#, 91-0#, 92-0#) of the utility model, and every mutual inductor interstar connection must be corresponding with power phase.
Claims (3)
1. the meritorious Optimization Compensation device of an autobalance, comprise, adjust the unbalance control device, the multi-functional marshalling switch of capacitor, circuit breaker, the Monophase electric power capacitor, it is characterized in that: adjust electric current in the unbalance control device, the voltage sample device is isolated variable connector by photoelectricity, A/D converter is connected with cpu central processing unit, be connected with keyboard and display on CPU, data storage, CPU passes through RS485, the RS232 communication interface is connected with external network, the data that CPU calculates are connected with the switching driving mechanism with buffer circuit by protection, and according to load choose reasonable capacitor access way.
2. the meritorious Optimization Compensation device of autobalance according to claim 1, it is characterized in that: the power capacitor that 12 single-phase 400V are housed in this product machine, every capacitor namely can be connected between phase line and phase line under the control of built-in microcomputer, also can be connected between phase line and zero line.
3. the meritorious Optimization Compensation device of autobalance according to claim 1, it is characterized in that: cpu central processing unit is 32 of state-of-the art Philips ARM high performance chips, 32 A/D conversion chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202456 CN202930950U (en) | 2012-04-18 | 2012-04-18 | Automatic balancing optimal active compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202456 CN202930950U (en) | 2012-04-18 | 2012-04-18 | Automatic balancing optimal active compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202930950U true CN202930950U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220202456 Expired - Fee Related CN202930950U (en) | 2012-04-18 | 2012-04-18 | Automatic balancing optimal active compensation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202930950U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244897A (en) * | 2014-07-11 | 2016-01-13 | 北海市深蓝科技发展有限责任公司 | Active power balance adjustment and reactive compensation method and device |
| CN105281317A (en) * | 2014-07-18 | 2016-01-27 | 北海市深蓝科技发展有限责任公司 | Stepped active power balance and reactive power optimization voltage regulation treatment method of low-voltage transformer area |
| CN105322557A (en) * | 2014-07-11 | 2016-02-10 | 北海市深蓝科技发展有限责任公司 | Active power balance adjustment and reactive compensation method |
-
2012
- 2012-04-18 CN CN 201220202456 patent/CN202930950U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244897A (en) * | 2014-07-11 | 2016-01-13 | 北海市深蓝科技发展有限责任公司 | Active power balance adjustment and reactive compensation method and device |
| CN105322557A (en) * | 2014-07-11 | 2016-02-10 | 北海市深蓝科技发展有限责任公司 | Active power balance adjustment and reactive compensation method |
| CN105281317A (en) * | 2014-07-18 | 2016-01-27 | 北海市深蓝科技发展有限责任公司 | Stepped active power balance and reactive power optimization voltage regulation treatment method of low-voltage transformer area |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20160418 |