CN203166535U - Fast low voltage composite switch - Google Patents
Fast low voltage composite switch Download PDFInfo
- Publication number
- CN203166535U CN203166535U CN 201320156536 CN201320156536U CN203166535U CN 203166535 U CN203166535 U CN 203166535U CN 201320156536 CN201320156536 CN 201320156536 CN 201320156536 U CN201320156536 U CN 201320156536U CN 203166535 U CN203166535 U CN 203166535U
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- CN
- China
- Prior art keywords
- latching relay
- magnetic latching
- phase
- phase line
- switching controller
- Prior art date
- 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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Abstract
The utility model discloses a fast low voltage composite switch comprising a magnetic latching relay, a diode, a voltage phase detector, a switching controller and a fault detector. A normally open contact of the magnetic latching relay and the diode are in parallel connection and then are in series connection to a phase line of a power supply which is connected with a capacitor. An input end of the voltage phase detector is connected with a phase line at one side of an input end of the magnetic latching relay. An input end of the fault detector is connected with a phase line at one side of an output end of the magnetic latching relay. An output end of the voltage phase detector, an output end of the fault detector and an external switching control signal are correspondingly connected with a control input end of the switching controller respectively. A control output end of the switching controller is connected with a power end of the magnetic latching relay. According to the fast low voltage composite switch, the switching controller carries out comprehensive analysis and judgment according to the detected voltage phase information, fault information and the external switching control signal, then the turn-on and turn-off of the magnetic latching relay is automatically controlled, and the fast low voltage composite switch has the advantage of accurate and rapid control.
Description
Technical field
The utility model relates to a kind of low pressure combination switch, relates in particular to a kind ofly to realize the quick low voltage combination switch of the switching state of control capacitor accurately and fast by switching controller and magnetic latching relay.
Background technology
Capacitor is because its work characteristics, be electric current leading voltage 90 degree, therefore exist very big switching to shove when switched capacitor, the maximum of shoving can reach tens of times of rated current, not only life of capacitors there is very big influence, and switch, circuit etc. is had very big impact.To shove in order to suppress switching, generally adopt current limliting to drop into, such as series reactor etc., not have the switched capacitor of impact in order reaching, existing a kind of combination switch exists at present.
This combination switch mainly is to adopt thyristor and magnetic latching relay parallel connection, and when needs dropped into capacitor, at first the zero cross fired thyristor was connected magnetic latching relay then, closes thyristor again, finishes and drops into action; When the excision capacitor, be first zero cross fired thyristor, disconnect magnetic latching relay then, the left back thyristor of closing is finished the excision action.The type combination switch operation program can not cause confusion, and thyristor can not switch on for a long time, because whole motion flow need delay time the regular hour, so switching speed is slower, basic identical with the conventional mechanical switch, generally making time is 1 ~ 2 minute again.In case and work-based logic or circuits for triggering break down, then whole switch is just burnt, so there is potential safety hazard.
The utility model content
The purpose of this utility model just is that providing a kind of in order to address the above problem realizes the quick low voltage combination switch of the switching state of control capacitor accurately and fast by switching controller and magnetic latching relay.
The utility model is achieved through the following technical solutions above-mentioned purpose:
Quick low voltage combination switch described in the utility model comprises magnetic latching relay, diode, the voltage-phase detector, switching controller and tracer, the normally opened contact of described magnetic latching relay be series at again after described diode is connected in parallel with phase line of power that electric capacity is connected on, described voltage-phase detector is for detection of described power source voltage and phase place, described switching controller is used for input and the cut-out of the electric capacity on the corresponding phase line of control, described tracer is for detection of described phase line power failure, described magnetic latching relay fault is also finished the action delay time that automatic on-line is calibrated described magnetic latching relay, the input of described voltage-phase detector is connected with the phase line of the power input of described magnetic latching relay one side, the input of described tracer is connected with the phase line of the power output end of described magnetic latching relay one side, the output of described voltage-phase detector, the output of described tracer is connected with the control input end of described switching controller is corresponding respectively with outside switching control signal, and the control output end of described switching controller is connected with the power end of described magnetic latching relay.
In the said structure, voltage-phase detector, switching controller and tracer are conventional equipment.
Particularly, described power supply is three phase mains, and described electric capacity is three and connections triangular in shape, and two respectively of described magnetic latching relay and described diodes are series at after described magnetic latching relay and the described diode parallel connection wherein on the phase line.
Perhaps, described power supply is three phase mains, and described electric capacity is three and is Y-connection, and three respectively of described magnetic latching relay and described diodes are series at after described magnetic latching relay and the described diode parallel connection wherein on the phase line.
The beneficial effects of the utility model are:
The utility model carries out comprehensive analysis and judgement by switching controller according to detected voltage-phase information, fault message and outside switching control signal, automatically control the switching of magnetic latching relay then, have control accurately and fast, advantage safe and reliable to operation; The utility model can be used for the capacitor switching of single-phase or three phase mains, generally based on three-phase.
Description of drawings
Fig. 1 is one of electrical block diagram of quick low voltage combination switch described in the utility model, and power supply is three phase mains among the figure, and electric capacity is three and connection triangular in shape;
Fig. 2 be quick low voltage combination switch described in the utility model electrical block diagram two, power supply is three phase mains among the figure, electric capacity is three and is Y-connection.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, quick low voltage combination switch described in the utility model comprises magnetic latching relay, diode, voltage-phase detector F1, switching controller M1 and tracer T1, the normally opened contact of magnetic latching relay be series at again after diode is connected in parallel with phase line of power that electric capacity is connected on, voltage-phase detector F1 is for detection of power source voltage and phase place, switching controller M1 is used for input and the cut-out of the electric capacity on the corresponding phase line of control, and tracer T1 is for detection of the phase line power failure, magnetic latching relay fault and the action delay time of finishing automatic on-line calibration magnetic latching relay.
As shown in Figure 1, described power supply is three phase mains, described electric capacity is three i.e. first capacitor C 1, second capacitor C 2 and the 3rd capacitor C 3, first capacitor C 1, second capacitor C 2 and 3 triangular in shape connections of the 3rd capacitor C, described magnetic latching relay is two the i.e. first magnetic latching relay K1 and the second magnetic latching relay K2, and described diode is two the i.e. first diode D1 and the second diode D2.Be series at after the first diode D1 and the first magnetic latching relay K1 parallel connection wherein on the phase line; Be series on the other phase line after the second diode D2 and the second magnetic latching relay K2 parallel connection; Also have a phase line then switch need be set.Three inputs of voltage-phase detector F1 are connected with the phase line of power input one side of magnetic latching relay (comprising K1 and K2) respectively, the input of tracer T1 is connected with the phase line of power output end one side of magnetic latching relay (comprising K1 and K2), the output of voltage-phase detector F1, the output of tracer T1 is connected with the control input end of switching controller M1 is corresponding respectively with outside switching control signal Contr, and the control output end of switching controller M1 is connected with the power end of the first magnetic latching relay K1 and the power end of the second magnetic latching relay K2 respectively.
Perhaps, as shown in Figure 2, described power supply is three phase mains, described electric capacity is three i.e. first capacitor C 1, second capacitor C 2 and the 3rd capacitor C 3, first capacitor C 1, second capacitor C 2 and the 3rd capacitor C 3 are Y-connection, described magnetic latching relay is three the i.e. first magnetic latching relay K1, the second magnetic latching relay K2 and the 3rd magnetic latching relay K3, and described diode is three the i.e. first diode D1, the second diode D2 and the 3rd diode D3.Be series at after the first diode D1 and the first magnetic latching relay K1 parallel connection wherein on the phase line; Be series on the other phase line after the second diode D2 and the second magnetic latching relay K2 parallel connection; Be series on the 3rd phase line after the 3rd diode D3 and the 3rd magnetic latching relay K3 parallel connection.Three inputs of voltage-phase detector F1 (comprise K1 with magnetic latching relay respectively, K2 and K3) the phase line of power input one side be connected, input and the magnetic latching relay of tracer T1 (comprise K1, K2 and K3) the phase line of power output end one side be connected, the output of voltage-phase detector F1, the output of tracer T1 is connected with the control input end of switching controller M1 is corresponding respectively with outside switching control signal Contr, the control output end of switching controller M1 respectively with the power end of the first magnetic latching relay K1, the power end of the second magnetic latching relay K2 is connected with the power end of the 3rd magnetic latching relay K3.
As depicted in figs. 1 and 2, carry out comprehensive analysis and judgement by switching controller M1 according to detected voltage-phase information, fault message and outside switching control signal Contr, automatically control the power supply input of the first magnetic latching relay K1, the second magnetic latching relay K2 and the 3rd magnetic latching relay K3 then respectively, thereby control the switching of the normally opened contact of the first magnetic latching relay K1, the second magnetic latching relay K2 and the 3rd magnetic latching relay K3 respectively, realize that the independent of first capacitor C 1, second capacitor C 2 and the 3rd capacitor C 3 drops into and cut off.
Claims (3)
1. quick low voltage combination switch, comprise magnetic latching relay and diode, the normally opened contact of described magnetic latching relay be series at again after described diode is connected in parallel with phase line of power that electric capacity is connected on, it is characterized in that: also comprise the voltage-phase detector, switching controller and tracer, described voltage-phase detector is for detection of described power source voltage and phase place, described switching controller is used for input and the cut-out of the electric capacity on the corresponding phase line of control, described tracer is for detection of described phase line power failure, described magnetic latching relay fault is also finished the action delay time that automatic on-line is calibrated described magnetic latching relay, the input of described voltage-phase detector is connected with the phase line of the power input of described magnetic latching relay one side, the input of described tracer is connected with the phase line of the power output end of described magnetic latching relay one side, the output of described voltage-phase detector, the output of described tracer is connected with the control input end of described switching controller is corresponding respectively with outside switching control signal, and the control output end of described switching controller is connected with the power end of described magnetic latching relay.
2. quick low voltage combination switch according to claim 1, it is characterized in that: described power supply is three phase mains, described electric capacity is three and connection triangular in shape, two respectively of described magnetic latching relay and described diodes are series at after described magnetic latching relay and the described diode parallel connection wherein on the phase line.
3. quick low voltage combination switch according to claim 1, it is characterized in that: described power supply is three phase mains, described electric capacity is three and is Y-connection, three respectively of described magnetic latching relay and described diodes are series at after described magnetic latching relay and the described diode parallel connection wherein on the phase line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156536 CN203166535U (en) | 2013-04-01 | 2013-04-01 | Fast low voltage composite switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156536 CN203166535U (en) | 2013-04-01 | 2013-04-01 | Fast low voltage composite switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166535U true CN203166535U (en) | 2013-08-28 |
Family
ID=49027695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320156536 Expired - Fee Related CN203166535U (en) | 2013-04-01 | 2013-04-01 | Fast low voltage composite switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374507A (en) * | 2016-09-06 | 2017-02-01 | 青岛鼎信通讯股份有限公司 | Three-phase common compensation intelligent synchronous switch and control protection method thereof |
-
2013
- 2013-04-01 CN CN 201320156536 patent/CN203166535U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374507A (en) * | 2016-09-06 | 2017-02-01 | 青岛鼎信通讯股份有限公司 | Three-phase common compensation intelligent synchronous switch and control protection method thereof |
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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: 20130828 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |