CN103001232A - Low-voltage reactive compensation independent switch control system - Google Patents
Low-voltage reactive compensation independent switch control system Download PDFInfo
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- CN103001232A CN103001232A CN2011102960401A CN201110296040A CN103001232A CN 103001232 A CN103001232 A CN 103001232A CN 2011102960401 A CN2011102960401 A CN 2011102960401A CN 201110296040 A CN201110296040 A CN 201110296040A CN 103001232 A CN103001232 A CN 103001232A
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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
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- 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 invention relates to a low-voltage reactive compensation independent switch control system, belongs to the technical field of low-voltage reactive compensation control, and aims to provide a capacitor switch system with a function of independent reactive control. According to the technical scheme, an automatic detecting device is a monitoring device which can operate independently, provides voltage and current parameters for a measuring and control unit, realizes electric protection, and is communicated with a computer system. Configuration and data transmission of the automatic detecting device are finished through communication of the computer system and the automatic detecting device. The computer system performs storage, analysis and judgment to acquired data and controls a reactive compensation switch device to switch capacitors according to judgment results. The low-voltage reactive compensation independent switch control system is suitable for fields such as industrial mines and converting stations.
Description
Technical field
Low-pressure reactive compensation independence switching control system of the present invention belongs to low-pressure reactive compensation control technology field.
Background technology
China's low-voltage reactive power compensation switching adopts a controller to add some groups of fling-cut switches substantially at present, and the compositions such as some groups of electric capacity and corresponding switching status indicator lamp, belong to centralized control, such control mode has a deadly defect, in case controller damages, a whole set of reactive compensation system all lost efficacy, and caused a large amount of reactive loss, and the technological improvement that affects the overall situation so how to avoid single component wear is imperative.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is: a kind of capacitor switching system with independent idle control function is provided.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: low-pressure reactive compensation independence switching control system, comprise: automatic detection device, low-voltage reactive power compensation switching device and computer system, automatic detection device is a kind of monitoring device that can work alone, for measurement and control unit provides voltage, current parameters, realize electic protection and communicate by letter with dedicated computer system, communicate by letter with automatic detection device by computer system, finish setting and data transfer to automatic detection device; Computer system is carried out real-time storage, analysis, judgement to image data, and according to judged result control low-voltage reactive power compensation switching device switched capacitor.
The control flow of above-mentioned computer system is as follows:
The first step: computer initialization, then the initialization system parameter enters second step;
Second step: automatic detection device detects electric current, the voltage condition of reactive compensation system, and detection signal is sent to computer, then enters for the 3rd step;
The 3rd step: computer judges by preset program whether detection signal satisfies testing requirement, if detection signal satisfies testing requirement, then enters for the 4th step, if detection signal does not satisfy testing requirement, then returns second step;
The 4th step: the Computer Analysis detection signal, judge the reactive power compensation amount, if the reactive power compensation amount is the undercompensation state, then forward-backward counter adds 1, the computer control low-voltage reactive power compensation switching device drops into a group capacitor, then returns second step; If the reactive power compensation amount is the overcompensation state, then forward-backward counter subtracts 1, and the computer control low-voltage reactive power compensation switching device excises a group capacitor, then returns second step.
The beneficial effect that the present invention compared with prior art has is: the present invention forms the Intelligent compensation unit of an independent completion by automatic detection device, low-voltage reactive power compensation switching device and computer system, has changed the automatic reactive compensator that is assembled by Intelligent reactive controller, fuse or little disconnected, thyristor combination switch or contactor, thermal relay, indicator light, the multiple dispersion device of low voltage power capacitor; Intelligent switching is different from over the sequencing switching, can carry out intelligent switching according to the situation of electric capacity, switching efficient height, effective; Multiple devices are linked to each other, every equipment has possessed independent reactive controller function, in running, number automatically become from small to large host computer control itself and miscellaneous equipment by the device address, adopt switching cycle, so that each capacitor evenly uses, the performance maximum efficiency has been avoided owing to the damage of single components and parts so that a whole set of reactive compensation system all lost efficacy, and reliability strengthens.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the flow chart of computer system control program of the present invention;
Fig. 2 is hardware system structure schematic diagram of the present invention.
Among the figure: 1 is that thyristor combination switch, 2 is that low pressure Self-healing power capacitor, 3 is that CPU measurement and control unit, 4 is that sampling apparatus, 5 is distribution transformer terminals.
Embodiment
As shown in Figure 1, low-pressure reactive compensation independence switching control system of the present invention, comprise: automatic detection device, low-voltage reactive power compensation switching device and computer system, automatic detection device is a kind of monitoring device that can work alone, for measurement and control unit provides voltage, current parameters, realize electic protection and communicate by letter with dedicated computer system, communicate by letter with automatic detection device by computer system, finish setting and data transfer to automatic detection device; Computer system is carried out real-time storage, analysis, judgement to image data, and according to judged result control low-voltage reactive power compensation switching device switched capacitor.
The control flow of above-mentioned computer system is as follows:
The first step: computer initialization, the initialization system parameter comprises that the initial parameter of computer itself is set and the initial parameter of automatic detection device is set; Then enter second step;
Second step: automatic detection device detects electric current, the voltage condition of reactive compensation system, and detection signal is sent to computer, then enters for the 3rd step;
The 3rd step: computer judges by preset program whether detection signal satisfies testing requirement, if detection signal satisfies testing requirement, then enters for the 4th step, if detection signal does not satisfy testing requirement, then returns second step;
The 4th step: the Computer Analysis detection signal, judge the reactive power compensation amount, if the reactive power compensation amount is the undercompensation state, then forward-backward counter adds 1, the computer control low-voltage reactive power compensation switching device drops into a group capacitor, then returns second step; If the reactive power compensation amount is the overcompensation state, then forward-backward counter subtracts 1, and the computer control low-voltage reactive power compensation switching device excises a group capacitor, then returns second step.
Fig. 2 is hardware system structure schematic diagram of the present invention, and sampling apparatus 4 is automatic detection device, and low-voltage reactive power compensation switching device comprises thyristor combination switch 1, low pressure Self-healing power capacitor 2 and circuit breaker K1; Computer system is comprised of CPU measurement and control unit 3; Its circuit structure is: the end of incoming cables of circuit breaker K1 is connected with three-phase alternating current output Ua, Ub, Uc, links to each other with the power end of low pressure Self-healing power capacitor 2 behind the leading-out terminal serial connection thyristor combination switch 1 of circuit breaker K1;
The port of CPU measurement and control unit 3 links to each other with the control end of circuit breaker K1, the control end of thyristor combination switch 1, the control end of low pressure Self-healing power capacitor 2 and the output of sampling apparatus 4 respectively.
The PORT COM of described CPU measurement and control unit 3 links to each other with the PORT COM of distribution transformer terminals 5.
Described CPU measurement and control unit 3 is provided with digital indicator.
Above-mentioned sampling apparatus 4 detects electric current, the voltage condition of reactive compensation system, and detection signal is sent to CPU measurement and control unit 3; 3 pairs of detection signals of CPU measurement and control unit carry out real-time storage, analysis, judgement, and control the switching of low pressure Self-healing power capacitor 2 by circuit breaker K1 and thyristor combination switch 1 according to judged result; If the reactive power compensation amount is the undercompensation state, then the forward-backward counter of CPU measurement and control unit 3 inside adds 1, CPU measurement and control unit 3 control low-voltage reactive power compensation switching devices and drops into a group capacitor; If the reactive power compensation amount is the overcompensation state, then the forward-backward counter of CPU measurement and control unit 3 inside subtracts 1, CPU measurement and control unit 3 control low-voltage reactive power compensation switching devices and excises a group capacitor, has reached the intelligent switching to electric capacity; Each system is can independent operating, has realized independent idle control function.
By the distribution transformer terminals 5 that links to each other with CPU measurement and control unit 3, operating personnel are artificial initialization system parameter or derivation real time data at a distance, is convenient to artificial control to bucking-out system.
Can a plurality of systems be linked to each other according to the real work situation at scene, number automatically become from small to large host computer control itself and miscellaneous equipment by the device address in running, consist of total intelligent powerless compensation control system, reliability strengthens.
Claims (2)
1. low-pressure reactive compensation independence switching control system, comprise: automatic detection device, low-voltage reactive power compensation switching device and computer system, it is characterized in that: automatic detection device is a kind of monitoring device that can work alone, for measurement and control unit provides voltage, current parameters, realize electic protection and communicate by letter with dedicated computer system, communicate by letter with automatic detection device by computer system, finish setting and data transfer to automatic detection device; Computer system is carried out real-time storage, analysis, judgement to image data, and according to judged result control low-voltage reactive power compensation switching device switched capacitor.
2. low-pressure reactive compensation independence switching control system according to claim 1 is characterized in that the control flow of above-mentioned computer system is as follows:
The first step: computer initialization, then the initialization system parameter enters second step;
Second step: automatic detection device detects electric current, the voltage condition of reactive compensation system, and detection signal is sent to computer, then enters for the 3rd step;
The 3rd step: computer judges by preset program whether detection signal satisfies testing requirement, if detection signal satisfies testing requirement, then enters for the 4th step, if detection signal does not satisfy testing requirement, then returns second step;
The 4th step: the Computer Analysis detection signal, judge the reactive power compensation amount, if the reactive power compensation amount is the undercompensation state, then forward-backward counter adds 1, the computer control low-voltage reactive power compensation switching device drops into a group capacitor, then returns second step; If the reactive power compensation amount is the overcompensation state, then forward-backward counter subtracts 1, and the computer control low-voltage reactive power compensation switching device excises a group capacitor, then returns second step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102960401A CN103001232A (en) | 2011-09-28 | 2011-09-28 | Low-voltage reactive compensation independent switch control system |
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| CN2011102960401A CN103001232A (en) | 2011-09-28 | 2011-09-28 | Low-voltage reactive compensation independent switch control system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201061150Y (en) * | 2007-04-23 | 2008-05-14 | 曾卫民 | Intelligent reactive compensation contactless routing switching mechanism |
| CN201323457Y (en) * | 2008-11-13 | 2009-10-07 | 湖北万洲电气集团有限公司 | A high-accuracy collecting-distributing automatic reactive power compensation control system |
| CN201608536U (en) * | 2010-01-19 | 2010-10-13 | 上海追日电气有限公司 | Novel split-phase switching power factor controller |
| CN201750220U (en) * | 2010-07-28 | 2011-02-16 | 开平市莱福电气设备有限公司 | Smart terminal for power distribution measurement and control |
| CN102082438A (en) * | 2009-11-26 | 2011-06-01 | 珠海市伏安达电子科技有限公司 | Intelligent automatic reactive power compensation cabinet |
-
2011
- 2011-09-28 CN CN2011102960401A patent/CN103001232A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201061150Y (en) * | 2007-04-23 | 2008-05-14 | 曾卫民 | Intelligent reactive compensation contactless routing switching mechanism |
| CN201323457Y (en) * | 2008-11-13 | 2009-10-07 | 湖北万洲电气集团有限公司 | A high-accuracy collecting-distributing automatic reactive power compensation control system |
| CN102082438A (en) * | 2009-11-26 | 2011-06-01 | 珠海市伏安达电子科技有限公司 | Intelligent automatic reactive power compensation cabinet |
| CN201608536U (en) * | 2010-01-19 | 2010-10-13 | 上海追日电气有限公司 | Novel split-phase switching power factor controller |
| CN201750220U (en) * | 2010-07-28 | 2011-02-16 | 开平市莱福电气设备有限公司 | Smart terminal for power distribution measurement and control |
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Application publication date: 20130327 |