CN203800694U - Dual-power-supply switching loop circuit - Google Patents
Dual-power-supply switching loop circuit Download PDFInfo
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- CN203800694U CN203800694U CN201420136927.3U CN201420136927U CN203800694U CN 203800694 U CN203800694 U CN 203800694U CN 201420136927 U CN201420136927 U CN 201420136927U CN 203800694 U CN203800694 U CN 203800694U
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- circuit breaker
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- relay
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- 239000003086 colorant Substances 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 description 4
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- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model relates to a dual-power-supply switching loop circuit, which comprises a voltage changeover switch and a voltmeter. The input end of the voltage changeover switch is respectively connected with three-phase circuits on the wire incoming side of the mains supply. The output end of the voltage changeover switch is connected with the voltmeter. The coil of a first under-voltage relay is arranged between an A-phase circuit and a B-phase circuit on the wire incoming side of the mains supply. The coil of a second under-voltage relay is arranged between the B-phase circuit and a C-phase circuit on the wire incoming side of the mains supply. According to the technical scheme of the utility model, the switching of power supplies between the A-phase circuit on the wire incoming side of the mains supply and a A-phase circuit on the wire incoming side of a generating set, is realized through the normally-opened switch of the first under-voltage relay, the normally-opened switch of the second under-voltage relay, a first intermediate relay, a first air circuit breaker and a second air circuit breaker. According to the technical scheme of the utility model, the mutual switching between two power supplies can be realized by means of two air circuit breakers without the need of any controller. Meanwhile, the dual-power-supply switching loop circuit is stable and reliable in performance.
Description
Technical field
The utility model relates to a kind of control loop circuit, relates in particular to a kind of duplicate supply switching circuit circuit.
Background technology
Present most of incoming line switch cabinet all adopts intelligent double-power controller, adopts that switch cubicle cost after Double-power controller is high, unstable properties.And when adopting the power supply of intelligent double-power controller, when intelligent double-power controller breaks down, 2 circuit breakers all cannot normally be worked, and cannot realize duplicate supply handoff functionality, cause unnecessary loss.Therefore, we are necessary to relate to a economical and practical, reliable and stable double-power supply loop, to substitute the Double-power controller of existing double power supply converting switch cabinet.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of not only reliable and stable, and the low duplicate supply switching circuit circuit of cost.
The technical scheme that the utility model adopts is: a kind of duplicate supply switching circuit circuit, it is characterized in that: it comprises voltage change-over switch and voltmeter,
First of described voltage change-over switch is connected with the A phase circuit of civil power inlet wire side with the 3rd connector lug, the 5th of described voltage change-over switch is connected with the B phase circuit of civil power inlet wire side with the 7th connector lug, the 9th of described voltage change-over switch is connected with the C phase circuit of civil power inlet wire side with the 11 connector lug, second of described voltage change-over switch, the 6th, the tenth connector lug is connected, the 4th of described voltage change-over switch, the 8th is connected with the 12 connector lug, one end of described voltmeter is connected with the second connector lug of described voltage change-over switch, the other end of described voltmeter is connected with the 4th connector lug of described voltage change-over switch,
On the A phase circuit of described civil power inlet wire side, B phase circuit and C phase circuit, be respectively equipped with fuse, between the first connector lug of described voltage change-over switch and the 5th connector lug, be provided with the coil of the first under voltage relay, between the 5th connector lug of described change over switch and the 9th connector lug, be provided with the coil of the second under voltage relay;
The A phase circuit of described civil power inlet wire side is connected with the normal open switch of the first under voltage relay, the coil of the normal open switch of the second under voltage relay, the first auxiliary relay successively after fuse, is finally connected with the neutral line;
The A phase connection of one end of the normal open switch of described the first auxiliary relay and civil power inlet wire side, the other end of the normal open switch of described the first auxiliary relay is connected with the neutral line by the under-voltage coil of the first frame circuit breaker; The normal open switch of described the first auxiliary relay is connected with the input of the first universal seclector, the first output of described the first universal seclector is connected with the closing coil of the first frame circuit breaker by the first push-button switch, the second output of described the first universal seclector is connected by the coil of very first time relay and the normally closed auxiliary switch of the first frame circuit breaker, and the first push-button switch is connected with the coil of very first time relay by the normal open switch of very first time relay;
The normally closed switch of described the first frame circuit breaker is connected with one end of the normally closed switch of the first auxiliary relay with the A phase connection of generating inlet wire side, the normally closed switch of described the first frame circuit breaker by fuse, and the other end of the normally closed switch of described the first auxiliary relay is connected with the neutral line by the under-voltage coil of the second frame circuit breaker; The normally closed switch of described the first auxiliary relay is connected with the input of the second universal seclector, the first output of described the second universal seclector is connected with the closing coil of the second frame circuit breaker by the second push-button switch, the second output of described the second universal seclector is connected by the coil of second time relay and the normally closed auxiliary switch of the second frame circuit breaker, and the second push-button switch is connected with the coil of second time relay by the normal open switch of second time relay;
After the A phase of the A phase of described civil power inlet wire side, B phase, C phase and generating inlet wire side, B phase, the C phase circuit main switch by the first frame circuit breaker and the second frame circuit breaker is connected, then be connected to power consumption equipment by current transformer.
Press such scheme, the normal open switch of described the first auxiliary relay is connected with the first frame circuit breaker by the indicator light of different colours respectively; The normally closed switch of the first auxiliary relay is connected with the second frame circuit breaker by the indicator light of different colours respectively.
Press such scheme, described the first frame circuit breaker is positive safe NA1 series of frame circuit breaker or frame circuit breaker of the same type, and described the second frame circuit breaker is positive safe NA1 series of frame circuit breaker or frame circuit breaker of the same type.
Principle is as follows: by the first and second under voltage relays detection civil power A, B, C three phase mains, have or not phase shortage, under-voltage, there are any phase phase shortage or under-voltage the first auxiliary relay coil can not obtain electric, as normal in line voltage, the first auxiliary relay coil obtains electric, the first universal seclector is got to manual, the first frame circuit breaker can carry out closing operation by the first button; As the first universal seclector is got to automatic transmission, the first frame circuit breaker can obtain the electric closing operation that carries out voluntarily by very first time relay, and now and by the second frame circuit breaker locking, the second frame circuit breaker cannot close a floodgate.
As the first frame circuit breaker, during because of fault trips such as line fault or decompression, phase shortages, as the second universal seclector, get to manually, the second frame circuit breaker can not close a floodgate voluntarily; As the second universal seclector, get to when automatic, can the second frame circuit breaker be closed a floodgate voluntarily by second time relay, reach the function that the second frame circuit breaker closes a floodgate voluntarily, with this, reached the object that is switched to generating by civil power.
After the second frame circuit breaker combined floodgate, now use power generating source, now, after the power supply of city power recovery, can cut off by the first auxiliary relay the power supply of the under-voltage coil of the second frame circuit breaker, allow the second frame circuit breaker trip voluntarily, the second change over switch 2SA is reached to automatic transmission, by the first and second under-voltage replays, detect line voltage when normal, can by the first auxiliary relay coil obtain electric after, very first time relay obtains electric in succession, then the closing coil of the first frame circuit breaker obtains electric, the first frame circuit breaker carries out closing operation automatically, reach an object that is returned to civil power by generating.
Whether principle is normal by detecting line voltage, judges intelligently the correct breaking-closing operating of 2 table frame circuit breaker, realizes the mutual switching of civil power and generating, and interlocking is reliable, can replace traditional Double-power controller.
The utility model is realized the mutual switching of 2 road power supplys in the situation that not needing controller by 2 table frame circuit breakers, stable and reliable for performance.
The utility model is realized 2 kinds of control modes by hand/automatic change-over to circuit, raw fault that riches all the way as any, and another back-up circuit more can embody its promptness and practicality to power supply, shorten greatly interruption duration, multiple functional, circuit is simple, cheap.
The beneficial effects of the utility model are: use of the present utility model can not only be cost-saving and can be reached the identical function of Double-power controller of existing switch cubicle, uses the installation that can substitute the Double-power controller of existing switch cubicle so of the present utility model.The utility model is simple in structure, installs, controls, dismantles all very convenient.
Accompanying drawing explanation
Fig. 1 is civil power inlet wire side voltage self-detection circuit figure of the present utility model.
Fig. 2 is the control circuit figure of civil power inlet wire side of the present utility model.
Fig. 3 is the control circuit figure of generating inlet wire side of the present utility model.
Fig. 4 is a main loop circuit figure of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, further illustrate embodiment of the present utility model.
Referring to Fig. 1-Fig. 4, a kind of duplicate supply switching circuit circuit, it comprises voltage change-over switch SA and voltmeter 1PV,
First of described voltage change-over switch SA is connected with the A phase circuit 1L1 of civil power inlet wire side with the 3rd connector lug, the 5th of described voltage change-over switch SA is connected with the B phase circuit 1L2 of civil power inlet wire side with the 7th connector lug, the 9th of described voltage change-over switch SA is connected with the C phase circuit 1L3 of civil power inlet wire side with the 11 connector lug, second of described voltage change-over switch SA, the 6th, the tenth connector lug is connected, the 4th of described voltage change-over switch SA, the 8th is connected with the 12 connector lug, one end of described voltmeter 1PV is connected with the second connector lug of described voltage change-over switch SA, the other end of described voltmeter 1PV is connected with the 4th connector lug of described voltage change-over switch SA,
On A phase circuit 1L1, the B phase circuit 1L2 of described civil power inlet wire side and C phase circuit 1L3, be respectively equipped with fuse FU1, FU2, FU3, between the first connector lug of described voltage change-over switch SA and the 5th connector lug, be provided with the coil of the first under voltage relay 1KV, between the 5th connector lug of described voltage change-over switch SA and the 9th connector lug, be provided with the coil of the second under voltage relay 2KV;
The A phase circuit 1L1 of described civil power inlet wire side is connected with the normal open switch of the first under voltage relay 1KV, the coil of the normal open switch of the second under voltage relay 2KV, the first auxiliary relay 1KA successively after fuse 1FU, finally be connected with neutral line N, to reach the object of controlling Switching power;
One end of the normal open switch of described the first auxiliary relay 1KA is connected with the A phase circuit 1L1 of civil power inlet wire side, the other end of the normal open switch of described the first auxiliary relay 1KA is connected with neutral line N by the under-voltage coil Q of the first frame circuit breaker QF1, to realize the control to the first frame circuit breaker QF1, circuit is carried out to short-circuit protection, realize no-voltage trip function, the normal open switch of described the first auxiliary relay 1KA is connected with the input of the first universal seclector 1SA, the first output of described the first universal seclector 1SA is connected with the closing coil X of the first frame circuit breaker QF1 by the first push-button switch 1ST, the second output of described the first universal seclector 1SA is connected with the normally closed auxiliary switch of the first frame circuit breaker QF1 by the coil of very first time relay 1KT, the first push-button switch 1ST is connected with the coil of very first time relay 1KT by the normal open switch of very first time relay 1KT, to realize tripping electromagnet and separating brake self-protection function,
The normal open switch of described very first time relay 1KT is connected with the shunt opening trip coil F of the first frame circuit breaker QF1 after being connected with the opening button 1STP of the first frame circuit breaker QF1 again;
The A phase circuit 2L1 of described generating inlet wire side is connected with the normally closed switch of the first frame circuit breaker QF1 after fuse 2FU, the normally closed switch of described the first frame circuit breaker QF1 is connected with one end of the normally closed switch of the first auxiliary relay 1KA, the other end of the normally closed switch of described the first auxiliary relay 1KA is connected with neutral line N by the under-voltage coil Q of the second frame circuit breaker QF2, to realize overload protection, short-circuit protection, interlock circuit, undervoltage tripping function, the normally closed switch of described the first auxiliary relay 1KA is connected with the input of the second universal seclector QF2, the first output of described the second universal seclector QF2 is connected with the closing coil X of the second frame circuit breaker QF2 by the second push-button switch 2SA, the second output of described the second universal seclector QF2 is connected with the normally closed auxiliary switch of the second frame circuit breaker QF2 by the coil of the second time relay 2KT, the second push-button switch 2SA is connected with the coil of the second time relay 2KT by the normal open switch of the second time relay 2KT, to realize making electromagnet and combined floodgate self-protection function,
The normal open switch of described the second time relay 2KT is connected with the shunt opening trip coil F of the 2nd frame circuit breaker QF2 after being connected with the opening button 2STP of the second frame circuit breaker QF2 again.
In the present embodiment, the A phase 2L1 of the A phase 1L1 of described civil power inlet wire side, B phase 1L2, C phase 1L3 and generating inlet wire side, B phase, C be after the main switch by the first frame circuit breaker QF1 and the second frame circuit breaker QF2 is connected mutually, then be connected to power consumption equipment by current transformer TA.
In the present embodiment, the normal open switch of described the first auxiliary relay 1KA is connected with the first frame circuit breaker QF1 by the indicator light of yellow color, green color, red color respectively, to realize energy storage prompting, separating brake prompting and the prompting of closing a floodgate.The normally closed switch of described the first auxiliary relay 1KA is connected with the second frame circuit breaker QF2 by the indicator light of yellow color, green color, red color respectively, to realize energy storage prompting, separating brake prompting and the prompting of closing a floodgate.
In the present embodiment, the normal open switch of described the first auxiliary relay 1KA is connected with the first frame circuit breaker QF1 respectively, to realize the control of energy storage motor and processing unit.The normally closed switch of described the first auxiliary relay 1KA is connected with the second frame circuit breaker QF2 respectively, to realize the control of energy storage motor and processing unit.
1STP in Fig. 2 is the opening button of the first frame circuit breaker, and the element being connected side by side with 1STP is the reserved contact of standby separating brake.2STP in Fig. 3 is the opening button of the second frame circuit breaker, and the element being connected side by side with 2STP is the reserved contact of standby separating brake.
In the present embodiment, described the first frame circuit breaker is positive safe NA1 series of frame circuit breaker, and described the second frame circuit breaker is positive safe NA1 series of frame circuit breaker.The A phase of civil power inlet wire side and B mutually between, the B phase of civil power inlet wire side and C pass through under-voltage replay or like product detectable voltage signals between mutually.
Claims (4)
1. a duplicate supply switching circuit circuit, is characterized in that: it comprises voltage change-over switch and voltmeter,
First of described voltage change-over switch is connected with the A phase circuit of civil power inlet wire side with the 3rd connector lug, the 5th of described voltage change-over switch is connected with the B phase circuit of civil power inlet wire side with the 7th connector lug, the 9th of described voltage change-over switch is connected with the C phase circuit of civil power inlet wire side with the 11 connector lug, second of described voltage change-over switch, the 6th, the tenth connector lug is connected, the 4th of described voltage change-over switch, the 8th is connected with the 12 connector lug, one end of described voltmeter is connected with the second connector lug of described voltage change-over switch, the other end of described voltmeter is connected with the 4th connector lug of described voltage change-over switch,
On the A phase circuit of described civil power inlet wire side, B phase circuit and C phase circuit, be respectively equipped with fuse, between the first connector lug of described voltage change-over switch and the 5th connector lug, be provided with the coil of the first under voltage relay, between the 5th connector lug of described change over switch and the 9th connector lug, be provided with the coil of the second under voltage relay;
The A phase circuit of described civil power inlet wire side is connected with the normal open switch of the first under voltage relay, the coil of the normal open switch of the second under voltage relay, the first auxiliary relay successively after fuse, is finally connected with the neutral line;
The A phase connection of one end of the normal open switch of described the first auxiliary relay and civil power inlet wire side, the other end of the normal open switch of described the first auxiliary relay is connected with the neutral line by the under-voltage coil of the first frame circuit breaker; The normal open switch of described the first auxiliary relay is connected with the input of the first universal seclector, the first output of described the first universal seclector is connected with the closing coil of the first frame circuit breaker by the first push-button switch, the second output of described the first universal seclector is connected by the coil of very first time relay and the normally closed auxiliary switch of the first frame circuit breaker, and the first push-button switch is connected with the coil of very first time relay by the normal open switch of very first time relay;
The normally closed switch of the first frame circuit breaker is connected with one end of the normally closed switch of the first auxiliary relay with the A phase connection of generating inlet wire side, the normally closed switch of described the first frame circuit breaker by fuse, and the other end of the normally closed switch of described the first auxiliary relay is connected with the neutral line by the under-voltage coil of the second frame circuit breaker; The normally closed switch of described the first auxiliary relay is connected with the input of the second universal seclector, the first output of described the second universal seclector is connected with the closing coil of the second frame circuit breaker by the second push-button switch, the second output of described the second universal seclector is connected by the coil of second time relay and the normally closed auxiliary switch of the second frame circuit breaker, and the second push-button switch is connected with the coil of second time relay by the normal open switch of second time relay;
The A phase of the A phase of described civil power inlet wire side, B phase, C phase and generating inlet wire side, B phase, C be after the main switch by the first frame circuit breaker and the second frame circuit breaker is connected mutually, then be connected to power consumption equipment by current transformer.
2. duplicate supply switching circuit circuit as claimed in claim 1, is characterized in that: the normal open switch of described the first auxiliary relay is connected with the first frame circuit breaker by the indicator light of different colours respectively.
3. duplicate supply switching circuit circuit as claimed in claim 1, is characterized in that: the normally closed switch of the first auxiliary relay is connected with the second frame circuit breaker by the indicator light of different colours respectively.
4. duplicate supply switching circuit circuit as claimed in claim 1, is characterized in that: described the first frame circuit breaker is positive safe NA1 series of frame circuit breaker, and described the second frame circuit breaker is positive safe NA1 series of frame circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136927.3U CN203800694U (en) | 2014-03-25 | 2014-03-25 | Dual-power-supply switching loop circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136927.3U CN203800694U (en) | 2014-03-25 | 2014-03-25 | Dual-power-supply switching loop circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203800694U true CN203800694U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420136927.3U Expired - Lifetime CN203800694U (en) | 2014-03-25 | 2014-03-25 | Dual-power-supply switching loop circuit |
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| Country | Link |
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| CN (1) | CN203800694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048304A (en) * | 2015-08-18 | 2015-11-11 | 中山市明阳电器有限公司 | Electrical interlocking device of multi-inlet-wire multi-bus-couple low-voltage distribution system |
| CN109474062A (en) * | 2018-12-26 | 2019-03-15 | 大连普阳铁路车辆配件有限公司 | Step down side switchs automatic closing control device |
-
2014
- 2014-03-25 CN CN201420136927.3U patent/CN203800694U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048304A (en) * | 2015-08-18 | 2015-11-11 | 中山市明阳电器有限公司 | Electrical interlocking device of multi-inlet-wire multi-bus-couple low-voltage distribution system |
| CN109474062A (en) * | 2018-12-26 | 2019-03-15 | 大连普阳铁路车辆配件有限公司 | Step down side switchs automatic closing control device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |