CN202019195U - Compensation device for power factors of low-voltage capacitor cabinet - Google Patents
Compensation device for power factors of low-voltage capacitor cabinet Download PDFInfo
- Publication number
- CN202019195U CN202019195U CN2010206901831U CN201020690183U CN202019195U CN 202019195 U CN202019195 U CN 202019195U CN 2010206901831 U CN2010206901831 U CN 2010206901831U CN 201020690183 U CN201020690183 U CN 201020690183U CN 202019195 U CN202019195 U CN 202019195U
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- China
- Prior art keywords
- relay
- power
- power supply
- output
- power factor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- 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
Abstract
The utility model discloses a compensation device for power factors of a low-voltage capacitor cabinet, which comprises a power factor controller, a projection display relay, an intermediate relay and a power supply, wherein a coil of the intermediate relay is connected between an output loop of the power factor controller and the projection display relay; and a normally open contact of the intermediate relay is connected between the output end of the power supply and the power supply end of the projection display relay. By the compensation device, the power supply of the projection display relay is stable, so that the power factors of the low-voltage capacitor cabinet can be improved, and the penalty of electric power departments is reduced to fulfill the aim of saving energy.
Description
Technical field
The utility model relates to a kind of low-voltage capacitance cabinet power factor compensation device.
Background technology
At present, the main power consumption equipment of cement production enterprise is asynchronous motor and transformer, and electric power system also will be supplied with reactive power except will supplying with these equipment active power, and reactive power compensation can improve power factor, saves energy and reduce production costs.Electric industry department rewards according to the height of average power factor business electrical and punishes.When the user power factor is 0.9, does not encourage and do not penalize, by normal electricity price charge; When power factor is lower than 0.9, increase income the electricity charge.Cement production enterprise in process of production, power load is often to change, so total reactive power also and then changes, in order to make power factor can both keep being not less than setting value in all cases, particularly when peak of power consumption, can keep higher power factor, and avoid when our factory's underload producing overcompensation, the shunt capacitor of the low-voltage capacitance cabinet of installing must be divided into some groups, and control the input of each group capacitor automatically and withdraw from.The power factor compensation device majority of domestic production is at present controlled by reactive power, as shown in Figure 1, comprise power factor controller and throw and show relay, the power supply output 1 of power factor controller shows relay supply 24VDC power supply for throwing, and its output loop 2 shows relay with throwing and is connected, because power factor controller belongs to integrated circuit, volume is little, capacity is little, thereby show relay power supply shakiness to throwing to causing, cause and throw the controllable silicon ducting capacity shakiness that shows relay, cause the low situation of power factor.
The utility model content
The purpose of this utility model provides a kind of power factor controller, can improve the power factor of low-voltage capacitance cabinet, energy savings.
The utility model adopts following technical proposals: a kind of low-voltage capacitance cabinet power factor compensation device, comprise power factor controller and throw and show relay, it is characterized in that: also include auxiliary relay and power supply, the coil of auxiliary relay is connected the output loop of power factor controller and throws and shows between the relay, and the normally opened contact of auxiliary relay is connected the output of power supply and throws between the power end that shows relay.
Described power supply comprises transformer and rectifier power source, and the input of transformer is connected with external power supply, and the output of transformer is connected with the input of rectification circuit, and the output of rectification circuit is the output of power supply.
The utility model low-voltage capacitance cabinet power factor compensation device is by showing house ornamentation auxiliary relay between the relay at power factor controller and throwing, the normally opened contact of auxiliary relay is connected the output of power supply and throws between the power end that shows relay, it is stable that the power supply of throwing apparent relay is supplied with, thereby can improve the power factor of low-voltage capacitance cabinet, therefore reduce the fine of power department, reach the purpose of energy savings.
Description of drawings
Fig. 1 is the prior art schematic diagram;
Fig. 2 is a schematic diagram of the present utility model.
Embodiment
As shown in Figure 2, the utility model low-voltage capacitance cabinet power factor compensation device comprises power factor controller and throws apparent relay, auxiliary relay and power supply, shown in the present embodiment three output loops 2, the coil 31,32,33 of three auxiliary relays is connected to the output loop 2 of power factor controller and throws and shows between the relay, and the normally opened contact 4,5,6 of three auxiliary relays is connected to the output of power supply and throws between the power end that shows relay.Wherein power supply comprises transformer T and rectifier power source D, and the input of transformer T is connected with external power supply 220VAC, and the output of transformer T is connected with the input of rectification circuit D, and the output of rectification circuit D is the output of power supply; The number of auxiliary relay is identical with the number of output loop 2.When a certain output loop 2 has electric current to pass through, for example when the coil 31 of middle relay gets electric adhesive, its normally opened contact 4 closures then, connect and throw the power supply that shows relay, this power supply power supply is stable, cause the controllable silicon ducting capacity of throwing apparent relay stable, thereby improve the power factor of whole low-voltage capacitance cabinet.Through overtesting, the power factor of low-voltage capacitance cabinet can be controlled between 0.95-0.96, has avoided the punishment of electric industry department, and energy savings.
Claims (2)
1. low-voltage capacitance cabinet power factor compensation device, comprise power factor controller and throw and show relay, it is characterized in that: also include auxiliary relay and power supply, the coil of auxiliary relay is connected the output loop of power factor controller and throws and shows between the relay, and the normally opened contact of auxiliary relay is connected the output of power supply and throws between the power end that shows relay.
2. power factor controller according to claim 1, it is characterized in that: described power supply comprises transformer and rectifier power source, the input of transformer is connected with external power supply, the output of transformer is connected with the input of rectification circuit, and the output of rectification circuit is the output of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206901831U CN202019195U (en) | 2011-05-20 | 2011-05-20 | Compensation device for power factors of low-voltage capacitor cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206901831U CN202019195U (en) | 2011-05-20 | 2011-05-20 | Compensation device for power factors of low-voltage capacitor cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202019195U true CN202019195U (en) | 2011-10-26 |
Family
ID=44812862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206901831U Expired - Fee Related CN202019195U (en) | 2011-05-20 | 2011-05-20 | Compensation device for power factors of low-voltage capacitor cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202019195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867453A (en) * | 2012-03-23 | 2013-01-09 | 郑州万特电气有限公司 | Practical training system and practical training control device for low-voltage capacitor box |
-
2011
- 2011-05-20 CN CN2010206901831U patent/CN202019195U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867453A (en) * | 2012-03-23 | 2013-01-09 | 郑州万特电气有限公司 | Practical training system and practical training control device for low-voltage capacitor box |
| CN102867453B (en) * | 2012-03-23 | 2014-12-24 | 郑州万特电气有限公司 | Practical training system and practical training control device for low-voltage capacitor box |
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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: 20111026 Termination date: 20120520 |