CN201174595Y - Selection type reactive compensating controller having diagnosis function - Google Patents
Selection type reactive compensating controller having diagnosis function Download PDFInfo
- Publication number
- CN201174595Y CN201174595Y CNU2008200332952U CN200820033295U CN201174595Y CN 201174595 Y CN201174595 Y CN 201174595Y CN U2008200332952 U CNU2008200332952 U CN U2008200332952U CN 200820033295 U CN200820033295 U CN 200820033295U CN 201174595 Y CN201174595 Y CN 201174595Y
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- detection circuit
- controller
- capacitor
- loop
- power factor
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- Expired - Fee Related
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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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- Control Of Electrical Variables (AREA)
Abstract
The utility model discloses a selection type reactive power compensation controller with a diagnostic function. A circuit of the controller is connected with a processor unit through a human-machine interface, and the processor unit of a connector is connected with a power factor detection circuit, a three-phase current detection circuit as well as a driving and alarm output circuit. The controller is characterized in that: the power factor detection circuit is connected with a system input power supply, and the three-phase current detection circuit is connected with a capacitor loop. The controller can diagnose the fault of a capacitor and a switching loop of the capacitor, remove a broken-down loop in time and alarm, select the corresponding capacitor switching according to the reactive power needed by load, improve the compensation efficiency and the reliability of the controller, and prolong the service life of a reactive power compensation device.
Description
Technical field
The utility model relates to a kind of capacitance reactive compensation control device, is specifically related to a kind of selection type idle compensating control with diagnostic function.
Background technology
Usually reactive power compensating controller, employings power factor is a controlled quentity controlled variable, the idle requirement of progressively approaching load of the switching cycle by same capability capacitor group is with the raising power factor.When capacitor switching loop or capacitor fault, controller can't be judged, influences the switching effect or causes fault further to enlarge, and the mode of progressively approaching the reactive power requirement of switching cycle can not smoothly compensate, and easily produces throw in-of oscillation.
Summary of the invention
The purpose of this utility model is: design a kind of selection type idle compensating control with diagnostic function, can diagnose the fault in capacitor and switching loop thereof, timely excision fault loop is also reported to the police, select corresponding capacitor switching according to the required reactive power of load, improve the compensation efficient and the reliability of controller, prolong reactive power compensator useful life.
The purpose of this utility model is achieved in that this controller circuitry is by man-machine interface connection processing device unit, connect detection circuit of power factor, three-phase current detection circuit and driving and warning output circuit on the connector processor unit, it is characterized in that: connected system input power supply on detection circuit of power factor connects capacitor loops on the three-phase current detection circuit.
The man-machine interface input system configuration switching feeder number and the condenser capacity of this controller, and display system parameter, fault message and capacitor switching attitude; The power factor of detection circuit of power factor connecting system power source voltage, current detecting system; Three-phase current detection circuit inserts the output current of the three-phase current detection capacitor group of capacitor group; The required reactive power of processor unit computing system; decision capacitor group switching loop; calculate and thrown condenser capacity differentiation capacitor group and switching loop state, send corresponding protection and alarm signal, driving and warning output circuit connect the capacitor switching loop also provides the output of reporting to the police.
The utlity model has following advantage: 1. processor unit is according to the power factor of required reactive power of detection circuit of power factor sampled result computing system and system, selectively choose the switching loop and the feeder number of capacitor, once control just can make the idle ullage of system reach minimum, realizes smoothly compensation; Take optimal algorithm to make the total switching frequency relative equilibrium in the minimum and every road of switching frequency of capacitor group, the useful life of having improved fling-cut equipment and capacitor simultaneously.2. calculate and thrown the electric current of capacitor and the electric current of true capacitor group more, differentiate the fault in capacitor or switching loop, the excision fault loop is also sent alarm signal.3. Shu Ru voltage, the automatic identification of current signal polarity not only can drive controllable silicon but also can drive contactor work, as long as be provided with on panel.
Description of drawings
Fig. 1 is the utility model structured flowchart
Fig. 2 is that the utility model uses connection diagram
Fig. 3 is the utility model software flow pattern
Embodiment
As Figure 1-3, this controller circuitry is by man-machine interface connection processing device unit, connect detection circuit of power factor, three-phase current detection circuit and driving and warning output circuit on the connector processor unit, it is characterized in that: connected system input power supply on detection circuit of power factor connects capacitor loops on the three-phase current detection circuit.
The capacitor group switching feeder number and the capacity of the man-machine interface input system configuration of this controller, power factor switching thresholding and voltage limit value etc.; Detection circuit of power factor detects voltage, the current sample of system, the power factor sending processor unit of checking out, processor unit calculates the required reactive power of system, and according to capacitor group switching loop parameter calculating selection corresponding capacitor group switching loop and the way imported in advance, by driving and the output of warning output circuit; When if the required reactive power of system exceeds the reactive power compensator capacity of capacitor bank, whole capacitor groups of controller input, and send alarm signal through man-machine interface drive and the warning contact output of warning output circuit.
In capacitor group input process, whether every input one group capacitor, controller detect three-phase current and are consistent with this group capacitor capacity, just judge this loop fault if the electric current difference exceeds certain scope; Excise this loop and substitute with the capacity loop, and send corresponding alarm signal with another; When the capacitor group is normally moved, if being inconsistent with the capacity that has dropped into, capacitor group electric current do not exceed certain scope, this controller will take examination to draw mode failure judgement loop, road; Controller is loop of excision earlier, and whether detect actual current then corresponding with residual electricity container pool-size, if correspondence then judge this loop fault, on the contrary then not to drop into again, try to draw the road one by one for throwing the loop, till finding out all fault loop; The excision fault loop is used with the capacity loop and is substituted, and sends corresponding alarm signal; This controller can play diagnosis and protective effect to switching circuit breaking, short circuit, phase shortage and failure conditions such as the puncture of capacitor group, volume change.
Claims (1)
1. the selection type idle compensating control that has diagnostic function, this controller circuitry is by man-machine interface connection processing device unit, connect detection circuit of power factor, three-phase current detection circuit and driving and warning output circuit on the connector processor unit, it is characterized in that: connected system input power supply on detection circuit of power factor connects capacitor loops on the three-phase current detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200332952U CN201174595Y (en) | 2008-03-24 | 2008-03-24 | Selection type reactive compensating controller having diagnosis function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200332952U CN201174595Y (en) | 2008-03-24 | 2008-03-24 | Selection type reactive compensating controller having diagnosis function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174595Y true CN201174595Y (en) | 2008-12-31 |
Family
ID=40201723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200332952U Expired - Fee Related CN201174595Y (en) | 2008-03-24 | 2008-03-24 | Selection type reactive compensating controller having diagnosis function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174595Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078331A (en) * | 2012-12-31 | 2013-05-01 | 渤海大学 | Device and method for switching stepped capacitor group |
| CN106972503A (en) * | 2017-04-26 | 2017-07-21 | 许继电源有限公司 | A kind of Comprehensive Reactive Power Compensation control method and device |
-
2008
- 2008-03-24 CN CNU2008200332952U patent/CN201174595Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078331A (en) * | 2012-12-31 | 2013-05-01 | 渤海大学 | Device and method for switching stepped capacitor group |
| CN106972503A (en) * | 2017-04-26 | 2017-07-21 | 许继电源有限公司 | A kind of Comprehensive Reactive Power Compensation control method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 |