CN207082849U - Reactive compensation cabinet - Google Patents
Reactive compensation cabinet Download PDFInfo
- Publication number
- CN207082849U CN207082849U CN201721016037.9U CN201721016037U CN207082849U CN 207082849 U CN207082849 U CN 207082849U CN 201721016037 U CN201721016037 U CN 201721016037U CN 207082849 U CN207082849 U CN 207082849U
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- CN
- China
- Prior art keywords
- change
- over switch
- reactive compensation
- switch
- compensation cabinet
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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)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
A kind of reactive compensation cabinet; current detection circuit, voltage detection circuit and the overvoltage protection member loop being sequentially ingressed into including master switch and respectively in three-phase circuit; also include some groups of compensating units, electric capacity automatic compensating controller and change-over switch; compensating unit described in every group includes breaker, A.C. contactor and the capacitor sequentially electrically connected, and the change-over switch is used to control compensating unit folding group number.Using above-mentioned reactive compensation cabinet, power factor can be made to reach user's predetermined state, improve the utilization ratio of power transformer, reduce line loss, improve the quality of voltage of power supply, so as to improve economic benefit and social benefit.In addition, each phase voltage, current value and power factor can be read in real time, manual/intelligent work mode of selection working capacitor can also be switched by change-over switch, pass through electric capacity automatic compensating controller or change-over switch switching selection capacitor switching way simultaneously, and by the working condition of each capacitor of traffic light system, convenient monitoring.
Description
Technical field
A kind of compensating cabinet is the utility model is related to, relates in particular to a kind of low voltage reactive compensation cabinet.
Background technology
The effect that reactive power compensation device is undertaken in electric power system is to improve the power factor of power network, reduces power supply
The loss of transformer and conveying circuit, power supplying efficiency is improved, improve power supply environment；So reactive power compensation device supplies in electric power
An indispensable very important status is in electric system.Rational selection reactive power compensation device, can accomplish
The loss of supply network is reduced to greatest extent, changes the flowing of reactive power in power system, so as to improve power system
Voltage level, reduce via net loss and improve the dynamic property of power system, improve power grid quality.Conversely, such as select or make
With improper, the problems such as electric power system voltage pulsation, harmonic wave increase may be caused.
In existing reactive power compensator, electric current and magnitude of voltage in each circuitry phase are not shown, and can not to
Manually/intelligent control selection is carried out in the capacitor of compensation, the working condition of capacitor can not be shown, therefore staff
The working condition of device can not be noted, the very first time can not be found and repair when compensation device breaks down.
The content of the invention
For above-mentioned prior art, the technical problems to be solved in the utility model is to provide a kind of reactive compensation cabinet, makes
Power factor reaches user's predetermined state, improves the utilization ratio of power transformer, reduces line loss, improves the voltage matter of power supply
Amount, so as to improve economic benefit and social benefit.At the same time, can read in real time each phase voltage and current value and power because
Number, can also switch the switch of selection working capacitor by change-over switch, and change-over switch switching can also select artificial and intelligence
Energy working condition, and by the working condition of each capacitor of traffic light system, convenient monitoring.
In order to solve the above technical problems, the utility model provides a kind of reactive compensation cabinet, including master switch and respectively according to
Current detection circuit, voltage detection circuit, overvoltage protection member loop and some groups of compensating units in secondary access three-phase circuit,
Compensating unit described in every group includes breaker, A.C. contactor and the capacitor sequentially electrically connected, in addition to electric capacity is mended automatically
Controller and change-over switch I, the change-over switch I are repaid for controlling compensating unit folding group number, the converted switch I of control power supply
The operation power sampling connection terminal of contact and electric capacity automatic compensating controller be connected, the output of electric capacity automatic compensating controller
End is respectively connected to the drive end of A.C. contactor.
Preferably, the overvoltage protection member loop includes arrester.
Preferably, the current detection circuit includes current transformer 8 and alternating current ammeter 9.
Preferably, the voltage detection circuit includes fuse, the change-over switch II in series connection access three-phase circuit respectively
And the A.C. voltmeter in parallel with change-over switch II, by change-over switch II can any any one phase of converted measurement voltage.
Preferably, in addition to capacitor working signal show circuit, the electric capacity automatic compensating controller and change-over switch
I, capacitor working signal show circuit include A.C. contactor and signal lamp, the normally open contact and signal of the A.C. contactor
Lamp is connected to control corresponding signal lamp.
Preferably, the master switch is set to open type knife switch.
In summary, using above-mentioned reactive compensation cabinet, power factor can be made to reach user's predetermined state, improves power transformer
The utilization ratio of device, line loss is reduced, improve the quality of voltage of power supply, so as to improve economic benefit and social benefit.It is same with this
When, each phase voltage, current value and power factor can be read in real time, can also switch selection working capacitor by change-over switch
Switch, change-over switch switching can also select artificial and intelligent work state, and by the work of each capacitor of traffic light system
State, convenient monitoring.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the utility model reactive compensation cabinet；
Fig. 2 is the current detection circuit schematic diagram of the utility model reactive compensation cabinet；
Fig. 3 is the voltage detection circuit schematic diagram of the utility model reactive compensation cabinet；
Fig. 4 is the electric capacity automatic compensating controller wiring diagram of the utility model reactive compensation cabinet；
Fig. 5 is the capacitor show circuit schematic diagram of the utility model reactive compensation cabinet.
In figure：1- master switch, 2- arresters, 3- breakers, 4- A.C. contactors, 5- capacitors, 6- electric capacity compensate automatically
Controller, 7- change-over switches I, 8- current transformer, 9- alternating current ammeters, 10- change-over switches II, 11- A.C. voltmeter, 12-
Signal lamp
Embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings：
As shown in Figures 1 to 5, reactive compensation cabinet of the present utility model, including master switch 1 and three-phase electricity is sequentially ingressed into respectively
Current detection circuit, voltage detection circuit, overvoltage protection member loop and some groups of compensating units in road, compensation described in every group
Unit includes breaker 3, A.C. contactor 4 and the capacitor 5 sequentially electrically connected, in addition to electric capacity automatic compensating controller 6
It is used to control compensating unit folding group number with change-over switch I7, the change-over switch I7, the converted switch I7's of control power supply touches
Head is connected with the operation power sampling connection terminal of electric capacity automatic compensating controller 6, the output end of electric capacity automatic compensating controller 6
It is respectively connected to the drive end of A.C. contactor 4.
The overvoltage protection member loop includes arrester 2.The current detection circuit includes current transformer 8 and exchanged
Ammeter 9, the current value of three-phase circuit is measured respectively.The voltage detection circuit is included in series connection access three-phase circuit respectively
Fuse, change-over switch II10 and the A.C. voltmeter 11 in parallel with change-over switch II10, can be appointed by change-over switch II10
The voltage of meaning any phase and phase of converted measurement.Also include capacitor working signal show circuit, the capacitor working signal shows
Show that loop includes A.C. contactor 4 and signal lamp 12, normally open contact 3-4,4-5 and signal lamp 12 of the A.C. contactor 4 connect
Connect for controlling corresponding signal lamp 12.The master switch 1 is set to open type knife switch.
The converted switch I7 of common electrical source of electric capacity automatic compensating controller 6 selection contact 7-8,9-10,11-12,
13-14,15-16,17-18,19-20,21-22,23-24,25-26 are respectively connected to A.C. contactor 4 (1KM-10KM) driving
End, the normally open contact of A.C. contactor 4 (1KM-10KM) are used to control signal lamp 12 (1HR-10HR) corresponding to output.For example,
When change-over switch I7 selection contact 7-8 is connected, 1KM is connected, and 1HR working signal lamps are bright.The type of electric capacity automatic compensating controller 6
Number be JKW5C, the reactive power self-compensating controlling device of the model, suitable for low-voltage distribution system power capacitor reactive compensation installation from
Dynamic regulation, the switching that can be accurately controlled compensating unit shake without switching, are adapted to all working environment particularly to load light electric capacity
The big occasion of capacity.
Above-mentioned combination accompanying drawing is explained in detail to embodiment of the present utility model, but the present invention be not limited to it is above-mentioned
Embodiment, in one skilled in the relevant art's possessed knowledge, many variations can also be made to it.
Claims (6)
1. a kind of reactive compensation cabinet, it is characterised in that examined including master switch (1) and the electric current being sequentially ingressed into respectively in three-phase circuit
Survey time road, voltage detection circuit, overvoltage protection member loop and some groups of compensating units, compensating unit described in every group includes suitable
Breaker (3), A.C. contactor (4) and the capacitor (5) of secondary electrical connection, in addition to electric capacity automatic compensating controller (6) and turn
Switch I (7) is changed, the change-over switch I (7) is used to control compensating unit folding group number, the control converted switch I (7) of power supply
Contact is connected with the operation power sampling connection terminal of electric capacity automatic compensating controller (6), electric capacity automatic compensating controller (6)
Output end is respectively connected to the drive end of A.C. contactor (4).
2. reactive compensation cabinet according to claim 1, it is characterised in that the overvoltage protection member loop includes arrester
(2)。
3. reactive compensation cabinet according to claim 1, it is characterised in that the current detection circuit includes current transformer
And alternating current ammeter (9) (8).
4. reactive compensation cabinet according to claim 1, it is characterised in that the voltage detection circuit includes series connection respectively
Enter fuse, change-over switch II (10) and the A.C. voltmeter (11) in parallel with change-over switch II (10) in three-phase circuit, lead to
Cross change-over switch II (10) can any any one phase of converted measurement voltage.
5. reactive compensation cabinet according to claim 1, it is characterised in that also including capacitor working signal show circuit,
The electric capacity automatic compensating controller (6) and change-over switch I (7), capacitor working signal show circuit include A.C. contactor
(4) it is connected to control corresponding signal with signal lamp (12) with signal lamp (12), the normally open contact of the A.C. contactor (4)
Lamp (12).
6. reactive compensation cabinet according to claim 1, it is characterised in that the master switch (1) is set to open type knife switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721016037.9U CN207082849U (en) | 2017-08-15 | 2017-08-15 | Reactive compensation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721016037.9U CN207082849U (en) | 2017-08-15 | 2017-08-15 | Reactive compensation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207082849U true CN207082849U (en) | 2018-03-09 |
Family
ID=61419764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721016037.9U Expired - Fee Related CN207082849U (en) | 2017-08-15 | 2017-08-15 | Reactive compensation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207082849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111628573A (en) * | 2020-05-20 | 2020-09-04 | 上海华声电气研究所 | Online measurement structure for reactive capacitance compensation |
-
2017
- 2017-08-15 CN CN201721016037.9U patent/CN207082849U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111628573A (en) * | 2020-05-20 | 2020-09-04 | 上海华声电气研究所 | Online measurement structure for reactive capacitance compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180309 Termination date: 20210815 |