CN204481487U - A kind of reactive power compensation cabinet - Google Patents
A kind of reactive power compensation cabinet Download PDFInfo
- Publication number
- CN204481487U CN204481487U CN201520220313.8U CN201520220313U CN204481487U CN 204481487 U CN204481487 U CN 204481487U CN 201520220313 U CN201520220313 U CN 201520220313U CN 204481487 U CN204481487 U CN 204481487U
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- CN
- China
- Prior art keywords
- reactive power
- power factor
- factor controller
- compensation cabinet
- power compensation
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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
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- Control Of Electrical Variables (AREA)
Abstract
The utility model relates to field of electrical control, particularly relates to a kind of reactive power compensation cabinet.A kind of reactive power compensation cabinet, comprises cabinet, and is arranged on power factor controller, circuit breaker, auxiliary relay, current transformer and the promise dry group compensating circuit on cabinet; Be connected with the end of incoming cables of current transformer after electric network source serial connection circuit breaker, the leading-out terminal of current transformer and promise are done and are organized compensating circuit and be connected; Described current transformer and power factor controller feedback link, power factor controller and compensating circuit control connection; The wire loop of described auxiliary relay is connected in series mutually with the service entrance switch of intermediate frequency furnace, auxiliary relay and compensating circuit control connection; The control of auxiliary relay and compensating circuit has precedence over the control of power factor controller and compensating circuit; This reactive power compensation cabinet can be thrown disconnected by Based Intelligent Control compensating circuit, thus extends the useful life of building-out capacitor.
Description
Technical field
The utility model relates to field of electrical control, particularly relates to a kind of reactive power compensation cabinet.
Background technology
The effect of reactive power compensation cabinet is the power factor working to improve electrical network in power supply system, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves power supply environment.But in commercial Application, a lot of cast moulding enterprise can come into operation intermediate frequency furnace, as Foundry Works, steel plant etc.; Produce larger humorous wave interference when intermediate frequency furnace comes into operation, very large harm is produced to capacitor compensation cabinet, very easily allowance for damage electric capacity; And when intermediate frequency furnace comes into operation, power factor of electric network is very high, does not need to drop into electric capacity more yet and carry out compensation power factor.
Summary of the invention
In order to solve the problem, the purpose of this utility model is to provide a kind of reactive power compensation cabinet, and this reactive power compensation cabinet can be thrown disconnected by Based Intelligent Control compensating circuit, thus extends the useful life of building-out capacitor.
In order to realize above-mentioned object, the utility model have employed following technical scheme:
A kind of reactive power compensation cabinet, comprises cabinet, and is arranged on power factor controller, circuit breaker, auxiliary relay, current transformer and the some groups of building-out capacitor modules on cabinet; Be connected with some groups of building-out capacitor modules after electric network source serial connection circuit breaker; Described current transformer and power factor controller feedback link, the switching of power factor controller control capacitance compensating module; The coil of described auxiliary relay is connected in series mutually with the service entrance switch auxiliary contact of intermediate frequency furnace, and the main contact of auxiliary relay is connected with power factor controller.
As preferably, described building-out capacitor module is in series by fuse, capacitor switching contactor, reactor and building-out capacitor; During use, fuse is used for overload protection, and capacitor switching contactor is used for access or the excision of control and compensation electric capacity.
As preferably, described power factor controller and capacitor switching contactor control connection.
As preferably, circuit breaker comprises breaker body, and the operating grip be connected with breaker body; Described operating grip is arranged on cabinet front end face, and this structure is convenient to the closed of the whole reactive power compensation cabinet of staff's Non-follow control or is disconnected.
As preferably, described circuit breaker is also connected with lightning arrester.
As preferably, described electric network source is introduced by busbar, and busbar is connected with circuit breaker.
The utility model adopts technique scheme, and the inlet wire total power switch of intermediate frequency furnace is got a pair and often driven auxiliary contact by this reactive power compensation cabinet, is concatenated into the wire loop of auxiliary relay, and by auxiliary relay control and compensation circuit.When intermediate frequency furnace puts into operation, mains switch closes, auxiliary relay adhesive, and the auxiliary contact of auxiliary relay cut off the compensating circuit of capacitor compensation cabinet, and building-out capacitor is out of service; When intermediate frequency furnace is out of service, the compensating circuit of the power factor of electric network control capacitance compensating cabinet that power factor controller feeds back according to current transformer runs.Therefore, building-out capacitor in this reactive power compensation cabinet is thrown and is moved back and intermediate frequency furnace synchronous operation, thus protection building-out capacitor, extends building-out capacitor useful life.
Accompanying drawing explanation
Fig. 1 is Facad structure schematic diagram of the present utility model.
Fig. 2 is internal structure schematic diagram one of the present utility model.
Fig. 3 is internal structure schematic diagram two of the present utility model.
Fig. 4 is control circui schematic diagram of the present utility model.
Fig. 5 is compensating circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
A kind of reactive power compensation cabinet as shown in Fig. 1 ~ Fig. 5, comprises cabinet 1, and is arranged on power factor controller 2, circuit breaker, auxiliary relay 4, current transformer 5 and the some groups of building-out capacitor modules on cabinet 1.Electric network source is introduced by busbar 11, and busbar 11 is connected with circuit breaker, and circuit breaker is connected with lightning arrester 7 and some groups of building-out capacitor modules, and building-out capacitor module is in series by fuse 61, capacitor switching contactor 62, reactor 63 and building-out capacitor 64.Described current transformer 5 and power factor controller 2 feedback link, the switching of power factor controller 2 control capacitance compensating module, specifically power factor controller 2 and capacitor switching contactor 62 control connection.The coil of described auxiliary relay 4 is connected in series mutually with the service entrance switch auxiliary contact 8 of intermediate frequency furnace, and the main contact of auxiliary relay 4 is connected with power factor controller 2.
In the present embodiment, fuse 61 is for overload protection.Circuit breaker comprises breaker body 31, and the operating grip 32 be connected with breaker body 31, and operating grip 32 is arranged on cabinet 1 front end face.Operating grip 32 for controlling breaker body 31, thus controls the closed of whole reactive power compensation cabinet or disconnects, and is convenient to staff's Non-follow control.Current transformer 5 is electric currents for measuring major loop and phase current signal, line current signal is supplied to power factor controller 2, the input of the switch-capacitor contactor 62 of power factor controller 2 plug-in automatic control and compensation electric capacity 64 module or excision, capacitor switching contactor 62 is for the access of control and compensation electric capacity 64 and excision.The inlet wire total power switch of intermediate frequency furnace is got a pair and is often driven auxiliary contact by this reactive power compensation cabinet of said structure, is concatenated into the wire loop of auxiliary relay 4, and passes through the switching of auxiliary relay 4 control and compensation electric capacity 64 module.When intermediate frequency furnace puts into operation, mains switch closes, auxiliary relay 4 adhesive, and the auxiliary contact of auxiliary relay 4 cut off building-out capacitor 64 module of capacitor compensation cabinet, and building-out capacitor 64 is out of service; When intermediate frequency furnace is out of service, building-out capacitor 64 module of the power factor of electric network control capacitance compensating cabinet that power factor controller 2 feeds back according to current transformer 5 is run.Therefore, building-out capacitor 64 in this reactive power compensation cabinet is thrown and is moved back and intermediate frequency furnace synchronous operation, thus protection building-out capacitor 64, extends building-out capacitor 64 useful life.
Claims (6)
1. a reactive power compensation cabinet, is characterized in that: comprise cabinet, and is arranged on power factor controller, circuit breaker, auxiliary relay, current transformer and the some groups of building-out capacitor modules on cabinet; Be connected with some groups of building-out capacitor modules after electric network source serial connection circuit breaker; Described current transformer and power factor controller feedback link, the switching of power factor controller control capacitance compensating module; The coil of described auxiliary relay is connected in series mutually with the service entrance switch auxiliary contact of intermediate frequency furnace, and the main contact of auxiliary relay is connected with power factor controller.
2. a kind of reactive power compensation cabinet according to claim 1, is characterized in that: described building-out capacitor module is in series by fuse, capacitor switching contactor, reactor and building-out capacitor.
3. a kind of reactive power compensation cabinet according to claim 2, is characterized in that: described power factor controller and capacitor switching contactor control connection.
4. a kind of reactive power compensation cabinet according to claim 2, is characterized in that: circuit breaker comprises breaker body, and the operating grip be connected with breaker body; Described operating grip is arranged on cabinet front end face.
5. a kind of reactive power compensation cabinet according to claim 1 and 2, is characterized in that: described circuit breaker is also connected with lightning arrester.
6. a kind of reactive power compensation cabinet according to claim 1, is characterized in that: described electric network source is introduced by busbar, and busbar is connected with circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220313.8U CN204481487U (en) | 2015-04-14 | 2015-04-14 | A kind of reactive power compensation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520220313.8U CN204481487U (en) | 2015-04-14 | 2015-04-14 | A kind of reactive power compensation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481487U true CN204481487U (en) | 2015-07-15 |
Family
ID=53637260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520220313.8U Expired - Fee Related CN204481487U (en) | 2015-04-14 | 2015-04-14 | A kind of reactive power compensation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204481487U (en) |
-
2015
- 2015-04-14 CN CN201520220313.8U patent/CN204481487U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150715 Termination date: 20170414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |