CN204597627U - PLC controls duplicate supply and generator automatic switching device - Google Patents
PLC controls duplicate supply and generator automatic switching device Download PDFInfo
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- CN204597627U CN204597627U CN201520271390.6U CN201520271390U CN204597627U CN 204597627 U CN204597627 U CN 204597627U CN 201520271390 U CN201520271390 U CN 201520271390U CN 204597627 U CN204597627 U CN 204597627U
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- circuit breaker
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- generator
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- 230000006837 decompression Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 22
- 238000010586 diagram Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Abstract
The utility model discloses a kind of PLC to control duplicate supply and generator automatic switching device and comprise the first main circuit breaker, the second main circuit breaker, the 3rd main circuit breaker and the 4th main circuit breaker; Also comprise and be located at first point of circuit breaker on a mains supply lead-out wire load, second point of circuit breaker and the 3rd point of circuit breaker, be located at the 4th point of circuit breaker on No. two mains supply lead-out wire loads, the 5th point of circuit breaker and the 6th point of circuit breaker; Also comprise the PLC controlling each closing of power circuit breaker or disconnection.Automatic switching device of the present utility model, detects the voltage of duplicate supply and generator by PLC, and cuts off according to voltage or connect, and makes duplicate supply side dead electricity or both sides dead electricity make system normal power supply, thus meets the demand of user.
Description
Technical field
The utility model relates to power distribution system technology field, particularly relates to a kind of PLC and controls duplicate supply and generator automatic switching device.
Background technology
When certain side dead electricity in 400V dual power supply system, generator, before power supply, disconnects insignificant load automatically, automatically recovers the power supply of insignificant load after dead electricity side restores electricity again.Current 400V duplicate supply civil power inlet wire, contact and generator power supply inlet wire generally adopt manual switching to change, the user of duplicate supply or employing dual-power automatic switching switch.Along with client is to the raising of the requirement of 400V dual power supply system reliability, current manual switchover mode is difficult to reach the requirement of user to power supply reliability.Even if adopt single duplicate supply automatic switch, be also difficult to reach the requirement of user to power supply reliability.And utilizing resolution element to realize complicated electricity consumption operational mode, its reliability is also difficult to be guaranteed.
Adopt the case of PLC programming Control civil power, generator, switching logical relation is simple, and locking is unreliable, can not automatically disconnect insignificant load, can not recover the power supply of insignificant load after mains-supplied before generator powered.
Utility model content
The purpose of this utility model is to provide a kind of PLC to control duplicate supply and generator automatic switching device, and this device can control the switching between duplicate supply and generator automatically, the electricity consumption reliability of electric power system is improved, thus meets the demand of user.
For solving the problems of the technologies described above, the technical solution of the utility model is:
PLC control duplicate supply and generator automatic switching device comprise first main circuit breaker for disconnecting or access a mains supply, and described first main circuit breaker is electrically connected with a described mains supply through the first interconnection switch; For disconnecting or access the second main circuit breaker of No. two mains supplies, described second main circuit breaker is electrically connected with described No. two mains supplies through the second interconnection switch; The 3rd interconnection switch and the 3rd main circuit breaker is serially connected with between described first main circuit breaker and described second main circuit breaker; For disconnecting or access the 4th main circuit breaker of generator power supply, described 4th main circuit breaker is electrically connected with described generator power supply through the 4th interconnection switch; For controlling first point of circuit breaker that on a described mains supply lead-out wire, load is switched on or switched off, second point of circuit breaker and the 3rd point of circuit breaker; For controlling the 4th point of circuit breaker, the 5th point of circuit breaker and the 6th point of circuit breaker that load on described No. two mains supply lead-out wires is switched on or switched off; Control the PLC of each closing of power circuit breaker or disconnection, described PLC is electrically connected with described first main circuit breaker, the second main circuit breaker, the 3rd main circuit breaker, the 4th main circuit breaker, first point of circuit breaker, second point of circuit breaker, the 3rd point of circuit breaker, the 4th point of circuit breaker, the 5th point of circuit breaker and the 6th point of circuit breaker respectively; A signal end of described PLC is defined as generator stop signal end, and described generator stop signal end is electrically connected with described generator power supply, out of service for controlling described generator; Described PLC is also electrically connected with the coil of each circuit breaker respectively, judge a described mains supply, described No. two mains supplies and described generator power supply whether decompression according to the electromagnetic signal of each coil, and assign the instruction being switched on or switched off each circuit breaker according to judged result.
Optimal way is, described PLC selects CPU224CN214-1BD23-OXB8.
After adopting technique scheme, the beneficial effects of the utility model are: because PLC control duplicate supply of the present utility model and generator automatic switching device comprise the first main circuit breaker for disconnecting or access a mains supply, for disconnecting or access the second main circuit breaker of No. two mains supplies, between the first main circuit breaker and the second main circuit breaker, be serially connected with the 3rd main circuit breaker; For disconnecting or access the 4th main circuit breaker of generator power supply; And each main circuit breaker is all connected in series an interconnection switch.Also comprise and be located at first point of circuit breaker on a mains supply lead-out wire load, second point of circuit breaker and the 3rd point of circuit breaker respectively, be located at the 4th point of circuit breaker on No. two mains supply lead-out wire loads, the 5th point of circuit breaker and the 6th point of circuit breaker respectively.Above-mentioned each main circuit breaker and each point of circuit breaker are all electrically connected with a PLC, and PLC judges the voltage condition of duplicate supply and generator according to the electromagnetic signal gathering coil on each main circuit breaker and each point of circuit breaker.
When a mains supply or No. two mains supply side dead electricity, the main circuit breaker that PLC controls respective side disconnects, and the 3rd main circuit breaker closes.The disconnection of main circuit breaker makes connected first interconnection switch or the second interconnection switch disconnect, after 3rd main circuit breaker is closed, connected 3rd interconnection switch is closed, load on the mains supply lead-out wire of dead electricity side accesses on the mains supply of non-dead electricity side, powered together by non-dead electricity side power supply, thus ensure that the reliability of system power supply.After dead electricity side mains supply recovers, the main circuit breaker of correspondence closes by PLC again, and connected interconnection switch is also closed, and this side mains supply access is used.The 3rd synchronous main circuit breaker is disconnected, and connected 3rd interconnection switch also disconnects, and makes the work of duplicate supply independent operating.
When a mains supply and the equal dead electricity of No. two mains supplies, PLC controls the first main circuit breaker and the second main circuit breaker disconnects simultaneously, thus the first interconnection switch and the second interconnection switch are all disconnected, allow a mains supply and No. two mains supplies all disconnect.PLC detects the electromagnetic signal on the 4th main circuit breaker coil simultaneously, and judge that whether the power supply at the access port place of generator power supply is normal, point circuit breaker corresponding for insignificant load disconnects by PLC simultaneously.After generator inlet place voltage is normal, the 4th main circuit breaker closes by PLC, and connected 4th interconnection switch is closed, and generator is access in electric power system and comes into operation, and powers thus ensure that the reliability of distribution system for each load.Above-mentioned insignificant load is connected in PLC and arranges several fixing signal end, is connected by insignificant load when wiring.After duplicate supply restores electricity, first main circuit breaker and the second main circuit breaker are connected the 4th main circuit breaker and are disconnected by PLC, generator stop signal end in PLC sends signal to be stopped generator, and duplicate supply comes into operation, and is finally connected by the insignificant load of cut-out again.
From the above, the utility model judges the voltage condition of duplicate supply and generator by PLC, and control each main circuit breaker according to voltage condition or each point of circuit breaker switches on and off, thus ensure that the power supply reliability of electric power system, meet the demand of user.
In sum, PLC of the present utility model controls duplicate supply with generator automatic switching device compared to prior art, solves employing manual mode and carrys out the insecure technical problem of power supply that switch dual power supply, generator and interconnection switch cause; PLC of the present utility model controls duplicate supply and generator automatic switching device controls the break-make of each circuit breaker by PLC, realize the automatic switchover of duplicate supply, generator and interconnection switch, because of PLC stable performance, make the reliability of electric power system high, thus meet the reliability requirement of user.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the PLC automatic switching device of the utility model duplicate supply and generator;
Fig. 2 is the theory diagram of the utility model PLC;
Fig. 3 is the operation principle block diagram of each circuit breaker of the utility model;
In figure: the 1-the first interconnection switch, the 2-the second interconnection switch, the 3-the three interconnection switch, the 4-the four interconnection switch.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, a kind of PLC controls duplicate supply and generator automatic switching device, comprises the first main circuit breaker 1DL, the second main circuit breaker 2DL, the 3rd main circuit breaker 3DL and the 4th main circuit breaker 4DL; First interconnection switch 1, second interconnection switch 2, the 3rd interconnection switch 3 and the 4th interconnection switch 4; First point of circuit breaker 1QF, second point of circuit breaker 2QF, the 3rd point of circuit breaker 3QF, the 4th point of circuit breaker 4QF, the 5th point of circuit breaker 5QF and the 6th point circuit breaker 6QF; Also comprise PLC, the PLC of the present embodiment selects CPU224CN214-1BD23-OXB8 model.
Wherein the first main circuit breaker 1DL is used for disconnecting or an access mains supply, first main circuit breaker 1DL is electrically connected with a mains supply through the first interconnection switch 1, when after a mains supply side dead electricity, first interconnection switch 1 closes, and will be connected on the load of a mains supply side by No. two mains powered.First main circuit breaker 1DL is electrically connected with a signal end of PLC.The load that the line that simultaneously mains supply is drawn connects is connected to first point of circuit breaker 1QF, second point of circuit breaker 2QF and the 3rd point circuit breaker 3QF, wherein the coil 1DZ of first point of circuit breaker 1QF is electrically connected with a signal end of PLC, the coil 2DZ of second point of circuit breaker 2QF is electrically connected with a signal end of PLC, and the coil 3DZ of the 3rd point of circuit breaker 3QF is electrically connected with a signal end of PLC.The signal end of PLC, according to after the change in the magnetic field on coil corresponding to each load of induction, judges a mains supply whether dead electricity.
Wherein the second main circuit breaker 2DL is used for disconnecting or access No. two mains supplies, second main circuit breaker 2DL is electrically connected with No. two mains supplies through the second interconnection switch 2, when after No. two mains supply side dead electricity, second interconnection switch 2 closes, and will be connected on the load of No. two mains supply sides by a mains powered.Second main circuit breaker 2DL is electrically connected with a signal end of PLC.The load that the line that simultaneously No. two mains supplies are drawn connects is connected to the 4th point of circuit breaker 4QF, the 5th point of circuit breaker 5QF and the 6th point circuit breaker 6QF, wherein the coil 4DZ of the 4th point of circuit breaker 4QF is electrically connected with a signal end of PLC, the coil 5DZ of the 5th point of circuit breaker 5QF is electrically connected with a signal end of PLC, and the coil 6DZ of the 6th point of circuit breaker 6QF is electrically connected with a signal end of PLC.The signal end of PLC, according to after the change in the magnetic field on coil corresponding to each load of induction, judges No. two mains supplies whether dead electricity.
Wherein the 3rd interconnection switch 3 and the 3rd main circuit breaker 3DL are connected between a mains supply and No. two mains supplies successively, and the 3rd main circuit breaker 3DL is electrically connected with a signal end of PLC.When PLC gives a 3rd main circuit breaker 3DL shutdown signal, the 3rd interconnection switch 3 closes, and allows a mains supply or No. two mains supplies be that all loads are powered.With should PLC give a 3rd main circuit breaker 3DL cut-off signal time, the 3rd interconnection switch 3 disconnects, and allows a mains supply and No. two mains supplies disconnect respective independent operating.
Wherein the 4th main circuit breaker 4DL is used for disconnecting or access generator power supply, 4th main circuit breaker 4DL is connected with the dynamo-electric power electric of generating through the 4th interconnection switch 4, when after a mains supply and No. two equal dead electricity of mains supply, PLC first can disconnect some insignificant loads, then the 4th main circuit breaker 4DL and the 4th interconnection switch 4 are closed, generator power supply being accessed electric power system is that each load is powered.Above-mentioned insignificant load can according to rule used in everyday, using several signal ends of PLC specially as the signal end of insignificant load.
The utility model utilizes PLC programming Control, realizes the automatic switching of 400V civil power power supply entering line, interconnection switch, generator power supply inlet wire.A mains supply of the electric power system of user and the master switch of No. two mains supplies are closed, when each interconnection switch disconnects, when in a mains supply and No. two mains supplies during any side dead electricity, when PLC detects dead electricity side no-voltage, first main circuit breaker 1DL or the second main circuit breaker 2DL of PLC instruction respective side disconnect, and the first corresponding interconnection switch 1 or the second interconnection switch 2 automatic closing run.When a mains supply and the equal dead electricity in No. two mains supply both sides, PLC detects civil power no-voltage, and PLC instruction first main circuit breaker 1DL or the second main circuit breaker 2DL disconnects, and correspondingly in the outlet of some insignificant loads divides circuit breaker.Then PLC instruction starter-generator, PLC reads the magnetic field on the coil 4DZ of the 4th main circuit breaker 4DL, when detecting that the voltage of generator power supply is normal, PLC is by the 4th main circuit breaker 4DL closure signal, 4th interconnection switch 4 starts automatically simultaneously, and generator is that each load is powered.When a mains supply or/and after No. two mains supplies recoveries, the generator stop signal end that PLC is electrically connected with generator power supply assigns the instruction stopping generator, synchronous 4th main circuit breaker 4DL disconnects and the 4th interconnection switch 4 disconnects, the insignificant load access finally will previously cut off again.Therefore the utility model controls the break-make of each circuit breaker by PLC, realizes the automatic switchover of duplicate supply, generator and interconnection switch, because of PLC stable performance, makes the reliability of electric power system high, thus meets the reliability requirement of user.
The first above-mentioned main circuit breaker 1DL, the second main circuit breaker 2DL, the 3rd main circuit breaker 3DL and the 4th main circuit breaker 4DL; First point of circuit breaker 1QF, second point of circuit breaker 2QF, the 3rd point of circuit breaker 3QF, the 4th point of circuit breaker 4QF, the 5th point of circuit breaker 5QF and the 6th point of its operation principle of circuit breaker 6QF are as shown in Figure 3.
The above preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, etc. same PLC control the improvement etc. of duplicate supply and generator automatic switching device structure, all should be included within protection range of the present utility model.
Claims (2)
1.PLC controls duplicate supply and generator automatic switching device, it is characterized in that, comprises
For disconnecting or access the first main circuit breaker of a mains supply, described first main circuit breaker is electrically connected with a described mains supply through the first interconnection switch;
For disconnecting or access the second main circuit breaker of No. two mains supplies, described second main circuit breaker is electrically connected with described No. two mains supplies through the second interconnection switch; The 3rd interconnection switch and the 3rd main circuit breaker is serially connected with between described first main circuit breaker and described second main circuit breaker;
For disconnecting or access the 4th main circuit breaker of generator power supply, described 4th main circuit breaker is electrically connected with described generator power supply through the 4th interconnection switch;
For controlling first point of circuit breaker that on a described mains supply lead-out wire, load is switched on or switched off, second point of circuit breaker and the 3rd point of circuit breaker;
For controlling the 4th point of circuit breaker, the 5th point of circuit breaker and the 6th point of circuit breaker that load on described No. two mains supply lead-out wires is switched on or switched off;
Control the PLC of each closing of power circuit breaker or disconnection, described PLC is electrically connected with described first main circuit breaker, the second main circuit breaker, the 3rd main circuit breaker, the 4th main circuit breaker, first point of circuit breaker, second point of circuit breaker, the 3rd point of circuit breaker, the 4th point of circuit breaker, the 5th point of circuit breaker and the 6th point of circuit breaker respectively; A signal end of described PLC is defined as generator stop signal end, and described generator stop signal end is electrically connected with described generator power supply, out of service for controlling described generator; Described PLC is also electrically connected with the coil of each circuit breaker respectively, judge a described mains supply, described No. two mains supplies and described generator power supply whether decompression according to the electromagnetic signal of each coil, and assign the instruction being switched on or switched off each circuit breaker according to judged result.
2. PLC according to claim 1 controls duplicate supply and generator automatic switching device, and described PLC selects CPU224CN214-1BD23-OXB8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271390.6U CN204597627U (en) | 2015-04-29 | 2015-04-29 | PLC controls duplicate supply and generator automatic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271390.6U CN204597627U (en) | 2015-04-29 | 2015-04-29 | PLC controls duplicate supply and generator automatic switching device |
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| Publication Number | Publication Date |
|---|---|
| CN204597627U true CN204597627U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520271390.6U Expired - Fee Related CN204597627U (en) | 2015-04-29 | 2015-04-29 | PLC controls duplicate supply and generator automatic switching device |
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| CN (1) | CN204597627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040039A (en) * | 2016-02-03 | 2017-08-11 | 艾默生网络能源（江门）有限公司 | A kind of distribution system and its control method |
| CN108134387A (en) * | 2018-01-05 | 2018-06-08 | 中国电力工程顾问集团东北电力设计院有限公司 | A kind of novel unit service power fast switch over method |
-
2015
- 2015-04-29 CN CN201520271390.6U patent/CN204597627U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040039A (en) * | 2016-02-03 | 2017-08-11 | 艾默生网络能源（江门）有限公司 | A kind of distribution system and its control method |
| CN108134387A (en) * | 2018-01-05 | 2018-06-08 | 中国电力工程顾问集团东北电力设计院有限公司 | A kind of novel unit service power fast switch over method |
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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: 20150826 Termination date: 20170429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |