CN204216659U - For the control circuit of double power-supply system - Google Patents
For the control circuit of double power-supply system Download PDFInfo
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- CN204216659U CN204216659U CN201420618994.9U CN201420618994U CN204216659U CN 204216659 U CN204216659 U CN 204216659U CN 201420618994 U CN201420618994 U CN 201420618994U CN 204216659 U CN204216659 U CN 204216659U
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- 230000005611 electricity Effects 0.000 claims description 19
- 238000004146 energy storage Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of control circuit for double power-supply system, described double power-supply system comprises working power, stand-by power supply, this control circuit comprises: power circuit, comprise working power circuit, stand-by power supply circuit and diverter switch, described diverter switch is for connecting described working power circuit or described stand-by power supply circuit; Point/contacting controling circuit, connect with described power circuit; Working power switch Qn, in parallel with described working power circuit; And Backup Power Switch Qr, leading-out terminal is in parallel with described working power switch Qn, end of incoming cables and stand-by power supply circuit in parallel; Wherein said power circuit is by control described point/contacting controling circuit and then the combined floodgate and the separating brake that control described working power switch Qn and described Backup Power Switch Qr.This control circuit because of after fault is disconnected in working power, can automatically switches to stand-by power supply and power, and cheap, failure rate is low, reliability are high, it is easy to debug and keep in repair.
Description
Technical field
The utility model relates to power domain, particularly, relates to a kind of control circuit for double power-supply system.
Background technology
Adopt the MCC of the bright mode of connection for subsequent use, under normal circumstances, powered by working power, when working power is because of after fault is disconnected, automatically switches to stand-by power supply and power.
Along with electronic technology is in the deep application in Energy control field, each producer develop in a large number based on MCU as the double power supply automatic switching switch of control unit and double-power intelligent switch controller, its valuable product, failure rate are high, and maintenance cost is higher.Especially double-power intelligent switch controller, general more than 10,000 yuan one of product price, once fault, generally needs whole replacing.
Utility model content
The purpose of this utility model is to provide a kind of control circuit for double power-supply system, this control circuit in working power because of after fault is disconnected, can automatically switch to stand-by power supply to power, and this control circuit is cheap, failure rate is low, reliability are high, it is easy to debug and keep in repair.
To achieve these goals, the utility model provides a kind of control circuit for double power-supply system, described double power-supply system comprises working power, stand-by power supply, it is characterized in that, this control circuit comprises: power circuit, comprises working power circuit, stand-by power supply circuit and diverter switch, and described diverter switch is for connecting described working power circuit or described stand-by power supply circuit; Point/contacting controling circuit, connect with described power circuit; Working power switch Qn, in parallel with described working power circuit; And Backup Power Switch Qr, leading-out terminal is in parallel with described working power switch Qn, end of incoming cables and stand-by power supply circuit in parallel; Wherein said power circuit is by control described point/contacting controling circuit and then the combined floodgate and the separating brake that control described working power switch Qn and described Backup Power Switch Qr.
Preferably, described control circuit also comprises faulty circuit, for giving the alarm when described control circuit breaks down.
Preferably, described control circuit also comprises control mains switch, for disconnecting or connecting general supply.
Preferably, described working power circuit comprises working power monitoring switch QF1 and auxiliary relay Kn2 and Kn3, and described working power circuit one end is electrically connected with described working power, and the other end is connected with diverter switch; And described stand-by power supply circuit comprises stand-by power supply monitoring switch QF2 and auxiliary relay Kr2 and Kr3, and described stand-by power supply circuit on one side is electrically connected with described stand-by power supply, and the other end is connected with diverter switch.
Preferably, described diverter switch comprises the normal opened contact of auxiliary relay Kn2 and Kn3, and first of auxiliary relay K and auxiliary relay K often leaves/normally closed contact.When described working power is without electricity, it closes stand-by power supply described in contact; When described working power has electricity, auxiliary relay Kn2 and Kn3 is charged, and its normal opened contact closes, and make auxiliary relay K charged, its normally closed contact is first opened, the described working power of closed connection after normal opened contact.
Preferably, described point/contacting controling circuit comprises time relay KT1, when connecting stand-by power supply, for the combined floodgate of Backup Power Switch described in time delay; And time relay KT2, when connecting working power, for the combined floodgate of working power switch described in time delay.
Preferably, described working power switch Qn comprises: working power switching winding Fn, when connecting stand-by power supply, if working power switch closes, for making working power switch separating brake; Working power closing coil Xn, when connecting working power, closes a floodgate for making working power; And the contact of Qn energy storing of switch position probing relay K nc, after Qn energy storage terminates, this junction closure.
Preferably, described Backup Power Switch Qr comprises: stand-by power supply switching winding Fr, when connecting working power, if Backup Power Switch closes, for making Backup Power Switch separating brake; Stand-by power supply closing coil Xr, when connecting stand-by power supply, closes a floodgate for making stand-by power supply; And the contact of Qr energy storing of switch position probing relay K rc, after Qr energy storage terminates, this junction closure.
By technique scheme, this control circuit for double power-supply system, can realize, when working power has electricity, automatically dropping into working power; In working power dead electricity or disconnected phase, when stand-by power supply normal charged time, automatically switch to stand-by power supply and power; In working power dead electricity or disconnected phase, when stand-by power supply is abnormal, state before work/Backup Power Switch maintenance dead electricity; When working power recovers normal power supply, the working power that automatically switches back is powered.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 shows the structural representation of the control circuit of double power-supply system;
Fig. 2 (a) shows the schematic diagram of the control circuit of double power-supply system; And
Fig. 2 (b) shows the schematic diagram of the control circuit of double power-supply system, and in figure, part A is connected with part A in Fig. 2 (a).
Description of reference numerals
100 power circuit 101 working power circuits
102 stand-by power supply circuit 110 diverter switches
First of 111 auxiliary relay K often open/and normally closed contact 120 controls mains switch
130 points/contacting controling circuit
Second normally closed contact of 131 auxiliary relay K
3rd normal opened contact 140 faulty circuit of 132 auxiliary relay K
First normal opened contact of 151 auxiliary relay K2
Second normal opened contact of 152 auxiliary relay K1
Second normal opened contact of 161 auxiliary relay K2
First normal opened contact of 162 auxiliary relay K1
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
Fig. 1 shows the structural representation of the control circuit of double power-supply system, Fig. 2 (a) and Fig. 2 (b) show the schematic diagram of the control circuit of double power-supply system, in Fig. 2 (a), part A is connected with part A in Fig. 2 (b), forms the entirety of control circuit.As shown in the structural representation of Fig. 1 and the control circuit schematic diagram of Fig. 2 (a) and Fig. 2 (b), the control circuit of double power-supply system comprises: power circuit 100, comprise working power circuit 101, stand-by power supply circuit 102 and diverter switch 110, diverter switch 110 is for connecting working power circuit 101 or stand-by power supply circuit 102; Point/contacting controling circuit 130, connect with power circuit 100; Working power switch Qn, in parallel with working power circuit 101; And Backup Power Switch Qr, leading-out terminal is in parallel with working power switch Qn, and end of incoming cables is in parallel with stand-by power supply circuit 101; Wherein power circuit 100 by controlling point/contacting controling circuit 130 and then control combined floodgate and the separating brake of working power switch Qn and Backup Power Switch Qr, from realizing switching between working power and stand-by power supply.
Wherein, diverter switch 110 one end is connected with described power circuit 100, and the other end is connected with described point/contacting controling circuit 130, for connecting working power circuit 101 or stand-by power supply circuit 102 through controlling mains switch 120.
In addition, the control circuit of double power-supply system can also comprise control mains switch 120, for disconnecting or connect the general supply of double power-supply system.When disconnecting control mains switch 120, can not cause working power switch Qn, the misoperation of Backup Power Switch Qr, that is, working power switch Qn, Backup Power Switch Qr remain on the state before controlling mains switch 120 disconnection.Control loop fault need to working power switch Qn, Backup Power Switch Qr adopt on the spot mechanical separating brake, close a floodgate time, or because repair and maintenance need when control loop carries out work, should first disconnect control mains switch 120.
In addition, the control circuit of double power-supply system can also comprise faulty circuit 140, and faulty circuit 140 comprises fault alarm contact SD1, SD2 of fault alarm contact SD and monitoring mains switch QF1 and QF2 controlling mains switch 110.When the control circuit of double power-supply system breaks down, faulty circuit 140 can give the alarm.
Wherein, working power circuit 101 comprises monitoring mains switch QF1 and auxiliary relay Kn2 and Kn3, is electrically connected with working power; And stand-by power supply circuit 102 comprises monitoring mains switch QF2 and auxiliary relay Kr2 and Kr3, is electrically connected with stand-by power supply.
Wherein, diverter switch 110 comprises the normal opened contact of auxiliary relay Kn2 and Kn3, and first of auxiliary relay K and auxiliary relay K often leaves/normally closed contact.When described working power is without electricity, it closes stand-by power supply described in contact; When working power has electricity, auxiliary relay Kn2 and Kn3 is charged, and it closes contact and first opens, and connects working power after its normal opened contact.
Wherein, point/contacting controling circuit 130 comprises time relay KT1, when connecting stand-by power supply, for the combined floodgate of Backup Power Switch described in time delay; And time relay KT2, when connecting working power, for the combined floodgate of working power switch described in time delay.
Wherein, working power switch Qn comprises: working power switching winding Fn, when connecting stand-by power supply, if working power switch closes, for making working power switch separating brake; Working power closing coil Xn, when connecting working power, closes a floodgate for making working power switch; And Qn energy storing of switch position probing relay K nc contact, after Qn energy storage terminates, this junction closure.
Wherein, Backup Power Switch Qr comprises: stand-by power supply switching winding Fr, when connecting working power, if Backup Power Switch closes, for making Backup Power Switch separating brake; Stand-by power supply closing coil Xr, when connecting stand-by power supply, closes a floodgate for making Backup Power Switch; And Qr energy storing of switch position probing relay K rc contact, after Qr energy storage terminates, this junction closure.
When the working power of double power-supply system has electricity, control circuit connects working power automatically.When working power L1, L2, L3 have an electricity, auxiliary relay Kn2 and Kn3 coil charged, its normal opened contact Kn2 and Kn3 closes, make auxiliary relay K coil charged, first normally closed contact 111 of auxiliary relay K is opened, disconnect stand-by power supply circuit 102, first normal opened contact and connect working power circuit 101.3rd normal opened contact 132 of auxiliary relay K closes, make time relay KT2 charged, its normal opened contact time delay closes for 0.5 second, make auxiliary relay K2 charged, its second normal opened contact 161 closes, now, if Backup Power Switch closes, make Backup Power Switch Qr switching winding Fr charged, disconnect Backup Power Switch, simultaneously, first normal opened contact 151 of auxiliary relay K2 closes, make working power switch Qn closing coil Xn charged, and then working power switch Qn is closed a floodgate, working power is connected.
In working power dead electricity or the disconnected phase of double power-supply system, and stand-by power supply normal charged time, control circuit automatically switches to stand-by power supply and powers.At working power dead electricity or disconnected phase time, auxiliary relay K coil losing electricity, first normal opened contact of auxiliary relay K is opened, is disconnected working power circuit 101, and the first normally closed contact is closed, connection stand-by power supply circuit 102.Now, because of stand-by power supply L1
/, L2
/, L3
/there is electricity, auxiliary relay Kr2, Kr3 coil is charged, it opens contact Kr2, Kr3 closes and second normally closed contact 131 of auxiliary relay K closes, make time relay KT1 charged, its normal opened contact time delay closes for 0.5 second, auxiliary relay K1 is charged, second normal opened contact 152 of auxiliary relay K1 closes, make working power switch switching winding Fn charged, disconnect working power switch, simultaneously, first normal opened contact of auxiliary relay K1 closes, make the closing coil Xr of Backup Power Switch Qr charged, and then Backup Power Switch Qr is closed a floodgate, stand-by power supply is connected automatically.
Wherein, the normal opened contact delay time of time relay KT1 should connect PC section decompression and adjusts by exceeding upper level power distribution equipment switching time, guarantees that device can't switch in working power when being less than the rolling electricity of setting time.Effectively prevent when shaking electricity and electrical source exchange occurs.
In working power dead electricity or the disconnected phase of double power-supply system, and when stand-by power supply is abnormal, double power-supply system will remain on working power switch Qn and close a floodgate, the state of Backup Power Switch Qr separating brake.
Recover normal power supply in working power, the working power that automatically switches back is powered.After working power recovers normal power supply, if double power-supply system is in, working power switch Qn closes a floodgate, Backup Power Switch Qr gate-dividing state, then directly recover normal power supply, if twin-power switch is in working power switch Qn separating brake, Backup Power Switch Qr "on" position, i.e. stand-by power supply power supply state, automatic switchover is returned working power power supply state by double power-supply system, and its course of action as described above.
Wherein, working power switch Qn also comprises the contact of Qn energy storing of switch position probing relay K nc, after working power Qn energy storage terminates, and this junction closure; Backup circuit breaker Qr also comprises the contact of Qr energy storing of switch position probing relay K rc, after backup circuit breaker energy storage terminates, and this junction closure.Detected the locking effect of relay tip by energy storage position, effectively prevent in energy storing of switch process and the defect that when stored energy mechanism fault is malfunctioning, closing coil frequently burns out because of charged time long.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection range of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (8)
1. for a control circuit for double power-supply system, described double power-supply system comprises working power, and stand-by power supply is characterized in that, this control circuit comprises:
Power circuit, comprises working power circuit, stand-by power supply circuit and diverter switch, and described diverter switch is for connecting described working power circuit or described stand-by power supply circuit;
Point/contacting controling circuit, connect with described power circuit;
Working power switch Qn, in parallel with described working power circuit; And
Backup Power Switch Qr, leading-out terminal is in parallel with described working power switch Qn, end of incoming cables and described stand-by power supply circuit in parallel;
Wherein said power circuit is by control described point/contacting controling circuit and then the combined floodgate and the separating brake that control described working power switch Qn and described Backup Power Switch Qr.
2. control circuit according to claim 1, is characterized in that, described control circuit also comprises faulty circuit, for giving the alarm when described control circuit breaks down.
3. control circuit according to claim 1, is characterized in that, described control circuit also comprises control mains switch, for disconnecting or connecting general supply.
4. control circuit according to claim 1, it is characterized in that, described working power circuit comprises working power monitoring switch QF1 and auxiliary relay Kn2 and Kn3, and described working power circuit one end is electrically connected with described working power, and the other end is connected with diverter switch; And described stand-by power supply circuit comprises stand-by power supply monitoring switch QF2 and auxiliary relay Kr2 and Kr3, and described stand-by power supply circuit on one side is electrically connected with described stand-by power supply, and the other end is connected with diverter switch.
5. control circuit according to claim 4, it is characterized in that, described diverter switch comprises the normal opened contact of auxiliary relay Kn2 and Kn3, first of auxiliary relay K and auxiliary relay K often leaves/normally closed contact, when described working power is without electricity, its normally closed contact connects described stand-by power supply; When described working power has electricity, auxiliary relay Kn2 and Kn3 is charged, and its normal opened contact closes, and make auxiliary relay K charged, its normally closed contact is first opened, the described working power of closed connection after normal opened contact.
6. control circuit according to claim 1, is characterized in that, described point/contacting controling circuit comprises time relay KT1, when connecting stand-by power supply, for the combined floodgate of Backup Power Switch described in time delay; And time relay KT2, when connecting working power, for the combined floodgate of working power switch described in time delay.
7. control circuit according to claim 1, is characterized in that, described working power switch Qn comprises:
Working power switching winding Fn, when connecting stand-by power supply, if working power switch closes, for making working power switch separating brake;
Working power closing coil Xn, when connecting working power, closes a floodgate for making working power; And
The contact of Qn energy storing of switch position probing relay K nc, after Qn energy storage terminates, this junction closure.
8. control circuit according to claim 1, is characterized in that, described Backup Power Switch Qr comprises:
Stand-by power supply switching winding Fr, when connecting working power, if Backup Power Switch closes, for making Backup Power Switch separating brake;
Stand-by power supply closing coil Xr, when connecting stand-by power supply, closes a floodgate for making stand-by power supply;
The contact of Qr energy storing of switch position probing relay K rc, after Qr energy storage terminates, this junction closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420618994.9U CN204216659U (en) | 2014-10-23 | 2014-10-23 | For the control circuit of double power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420618994.9U CN204216659U (en) | 2014-10-23 | 2014-10-23 | For the control circuit of double power-supply system |
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| Publication Number | Publication Date |
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| CN204216659U true CN204216659U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420618994.9U Active CN204216659U (en) | 2014-10-23 | 2014-10-23 | For the control circuit of double power-supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281966A (en) * | 2018-03-30 | 2018-07-13 | 国家电网公司 | One kind being used for Public residence switchgear house dual power supply available power operation control system |
-
2014
- 2014-10-23 CN CN201420618994.9U patent/CN204216659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281966A (en) * | 2018-03-30 | 2018-07-13 | 国家电网公司 | One kind being used for Public residence switchgear house dual power supply available power operation control system |
| CN108281966B (en) * | 2018-03-30 | 2023-12-29 | 国家电网公司 | Dual-power standby power supply operation control system for public building residential distribution room |
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