CN203193286U - Intelligent low-voltage reactive power compensator - Google Patents
Intelligent low-voltage reactive power compensator Download PDFInfo
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- CN203193286U CN203193286U CN 201320205753 CN201320205753U CN203193286U CN 203193286 U CN203193286 U CN 203193286U CN 201320205753 CN201320205753 CN 201320205753 CN 201320205753 U CN201320205753 U CN 201320205753U CN 203193286 U CN203193286 U CN 203193286U
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- reactive power
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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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Abstract
The utility model relates to an intelligent low-voltage reactive power compensator comprising a power supply module, a microprocessor, a keyboard, an OLED display screen, a voltage and current acquisition circuit, a zero-crossing switching control circuit and a communication module, wherein the power supply module, the keyboard, the OLED display screen, the voltage and current acquisition circuit, the zero-crossing switching control circuit and the communication module are connected with the microprocessor in a communication manner respectively; the zero-crossing switching control circuit comprises optical couplers, an IGBT, an opening loop and a closing loop; and each optical coupler is connected with the opening loop and the closing loop through the IGBT. The intelligent low-voltage reactive power compensator has the advantages that: a DSP is adopted by the reactive power compensator to serve as a controller, an FFT algorithm is used for the detection of parameters such as voltage, current and the like; and an improved nine-zone graph control strategy is adopted for solving problems of frequent switching easily occurring in conventional nine-zone graph control.
Description
Technical field
The utility model relates to power system device, relates in particular to a kind of intelligent low-pressure reactive power compensator.
Background technology
In electric power system reactive power to the normal operation type of electric power system and load system very important also be essential.In industrial production and daily life, most of loads all are resistance sense, need to consume a large amount of reactive powers.Because the transmission of reactive power in transmission line can cause electric current increase in the circuit, thereby increase the loss in the circuit, also can cause the decline of quality of voltage simultaneously, power consumption equipment is caused adverse effect.The reactive power compensation process is controlled automatically by idle compensating control.Controller can detect the power factor of partial electric grid, and automatic control capacitance cabinet, and capacitor is implemented to drop into and excision.Controller need carry out the configuration of setting value, and record is carried out in action to switching.Great majority all are to adopt to disperse reactive power compensation on the spot at present, whether normal in order to understand control procedure, need read the related data with writing controller, this just need carry out data communication with controller. and all there is certain limitation in communication modes such as infrared, the near radio that in the past adopts, power line carrier and telephone wire Modem, how to judge the ruuning situation of compensation arrangement quickly and accurately, never be resolved, thereby brought difficulty for monitoring management and operation maintenance.
Summary of the invention
The utility model purpose is to overcome the deficiency of above prior art, and a kind of intelligent low-pressure reactive power compensator is provided, and specifically has following technical scheme to realize:
Described intelligent low-pressure reactive power compensator, it is characterized in that, comprise power module, microprocessor, keyboard, OLED display screen, electric current and voltage Acquisition Circuit, operating passing zero control circuit and communication module, described power module, keyboard, OLED display screen, electric current and voltage Acquisition Circuit, operating passing zero control circuit and communication module are connected with microprocessor communication respectively, described operating passing zero control circuit comprises optocoupler, IGBT, sub-gate circuit and closing circuit, and described optocoupler is connected with sub-gate circuit and closing circuit by IGBT respectively.
The further design of described compensation arrangement is that described microprocessor adopts dsp chip.
The further design of described compensation arrangement is that described keyboard connects control by a single-chip microcomputer STC12LE5A60S2.
The further design of described compensation arrangement is that described electric current and voltage Acquisition Circuit has current transformer, voltage transformer and amplifier to connect to form, and the electric current and voltage Acquisition Circuit is connected with the digital-to-analogue conversion module of dsp chip.
The further design of described compensation arrangement is, also comprises the protection alert module, and described protection alert module is connected with described dsp chip.
The further design of described compensation arrangement is that described communication module is general GTM900C module.
Advantage of the present utility model is as follows:
(1) this device is the reactive power compensator of controller with DSP, realizes voltage, the isoparametric detection of electric current by fft algorithm.Adopt improved nine district figure control strategies, overcome the frequent switching problem that occurs easily in traditional nine district figure control.
(2) this device is furnished with daemon software, realizes remote data feedback by the GPRS wireless data transmission technology, and Long-distance Control can be monitored in real time to equipment.Also can be furnished with GSM note dispensing device, can carry out functions such as timed sending and equipment action prompt to image data.
(3) this device has related to hommizations such as demonstration, warning and button, has made things convenient for user's operation and maintenance.
(4) whole device adopts modularized design, has made things convenient for to change and maintenance.
Description of drawings
Fig. 1 is the module diagram of described intelligent low-pressure reactive power compensator.
Fig. 2 is the circuit diagram of described operating passing zero control circuit.
Fig. 3 is the circuit diagram of described communication module.
Embodiment
Below in conjunction with accompanying drawing the utility model scheme is elaborated.
As Fig. 1-2, the intelligent low-pressure reactive power compensator, comprise power module, microprocessor, keyboard, OLED display screen, electric current and voltage Acquisition Circuit, operating passing zero control circuit and communication module, power module, keyboard, OLED display screen, electric current and voltage Acquisition Circuit, operating passing zero control circuit and communication module are connected with microprocessor communication respectively, the operating passing zero control circuit comprises optocoupler, IGBT, sub-gate circuit and closing circuit, and optocoupler is connected with sub-gate circuit and closing circuit by IGBT respectively.The microprocessor of present embodiment adopts dsp chip.The OLED display screen can show primary system figure, measurement data, protection information, fault waveform.Adopt the low power operation pattern under the display unit default situations, prolonged the physical life of display unit.Short and sweet being convenient to of panel button design operated, and the LED display lamp is arranged on the panel, and the various states that install are shown, the user is come into plain view to the ruuning situation of Apparatus and system.LED light can display unit various states.That indicator light is followed successively by from top to bottom is standby, operation, fault, combined floodgate, separating brake, communication, power supply.
Keyboard connects control by a single-chip microcomputer STC12LE5A60S2.Keyboard comprises affirmation, returns, increases, reduces, arranges 5 buttons, can realize the input that arranges of each parameter.
The electric current and voltage Acquisition Circuit has current transformer, voltage transformer and amplifier to connect to form, and the electric current and voltage Acquisition Circuit is connected with the digital-to-analogue conversion module of dsp chip.Present embodiment adopts ZMCT113C electric current isolation transformer, ZMCT112 electric current isolation transformer, ZMPT101B voltage isolation transformer.0.5 grade of ZMCT113C accuracy class, range of linearity 0-100A pass to digital-to-analogue conversion chip for voltage signal need transform through amplifying circuit after specified input current 5A, instrument transformer transform.Direct current signal is gathered signals such as cell voltage, it is not very high that acquisition precision is required, and 12 road AD that DSP carries transform and can satisfy the demand, and the voltage that device is gathered is 0-48V, two capacitors wherein play the effect of filtering, and output passes to DSP to signal through amplifier AD706.
Present embodiment intelligent low-pressure reactive power compensator also comprises the protection alert module, and the protection alert module is connected with dsp chip.
Communication module is general GTM900C module.GTM900C module and microprocessor communicate by serial port, and the maximum rate of communication can reach 15 200 bps.TCP/IP agreement that GTM900 is integrated adopts inner expansion AT instruction, makes it send to the PC host computer to data by the GPRS network, and concrete steps are as follows:
A) definition PDP Context: AT+ CGDCONT.Use arranges order, can be the PDP Context defined parameters, and this PDP Context is by local Context identifier parameter＜c id〉sign.
B) initialization command: AT% ETCPIP.This order realizes that PDP activates and the initialization of TCPIP, is to use the single stepping that must finish before the TCPIP function.
C) open a TCP or UDP chained command: AT%IPOPEN.This order is used for opening a TCP or UDP chained command.
D) the data pattern order is set: AT% IOMODE.Whether the data that this order is mainly used to select to send encode, just the conversion of (HEX-ASC II).
E) transparent transmission function: AT% TPS.Realize the immediate data transmission on the TCPIP, simplified sending the operating procedure of data phase, and multiple modes of operation is provided, to be adapted to different transmitting scenes.
F) close chained command: AT% IPCLOSE.
Claims (6)
1. intelligent low-pressure reactive power compensator, it is characterized in that, comprise power module, microprocessor, keyboard, OLED display screen, electric current and voltage Acquisition Circuit, operating passing zero control circuit and communication module, described power module, keyboard, OLED display screen, electric current and voltage Acquisition Circuit, operating passing zero control circuit and communication module are connected with microprocessor communication respectively, described operating passing zero control circuit comprises optocoupler, IGBT, sub-gate circuit and closing circuit, and described optocoupler is connected with sub-gate circuit and closing circuit by IGBT respectively.
2. compensation arrangement according to claim 1 is characterized in that, described microprocessor adopts dsp chip.
3. compensation arrangement according to claim 1 is characterized in that, described keyboard connects control by a single-chip microcomputer STC12LE5A60S2.
4. compensation arrangement according to claim 2 is characterized in that, described electric current and voltage Acquisition Circuit has current transformer, voltage transformer and amplifier to connect to form, and the electric current and voltage Acquisition Circuit is connected with the digital-to-analogue conversion module of dsp chip.
5. compensation arrangement according to claim 2 is characterized in that, also comprises the protection alert module, and described protection alert module is connected with described dsp chip.
6. compensation arrangement according to claim 1 is characterized in that, described communication module is general GTM900C module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205753 CN203193286U (en) | 2013-04-23 | 2013-04-23 | Intelligent low-voltage reactive power compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205753 CN203193286U (en) | 2013-04-23 | 2013-04-23 | Intelligent low-voltage reactive power compensator |
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| Publication Number | Publication Date |
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| CN203193286U true CN203193286U (en) | 2013-09-11 |
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| CN 201320205753 Expired - Fee Related CN203193286U (en) | 2013-04-23 | 2013-04-23 | Intelligent low-voltage reactive power compensator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096877A (en) * | 2023-10-19 | 2023-11-21 | 国网山西省电力公司营销服务中心 | Multi-view-based regional dynamic electricity-carbon data electricity analysis method and system |
-
2013
- 2013-04-23 CN CN 201320205753 patent/CN203193286U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096877A (en) * | 2023-10-19 | 2023-11-21 | 国网山西省电力公司营销服务中心 | Multi-view-based regional dynamic electricity-carbon data electricity analysis method and system |
| CN117096877B (en) * | 2023-10-19 | 2024-02-13 | 国网山西省电力公司营销服务中心 | Multi-view-based regional dynamic electricity-carbon data electricity analysis method and system |
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| Date | Code | Title | Description |
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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: 20130911 Termination date: 20190423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |