CN203800695U - Intelligent low-voltage dual power switching power distribution cabinet control device - Google Patents

Intelligent low-voltage dual power switching power distribution cabinet control device Download PDF

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Publication number
CN203800695U
CN203800695U CN201420174269.7U CN201420174269U CN203800695U CN 203800695 U CN203800695 U CN 203800695U CN 201420174269 U CN201420174269 U CN 201420174269U CN 203800695 U CN203800695 U CN 203800695U
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CN
China
Prior art keywords
power supply
breaker
main power
circuit
supply
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Expired - Fee Related
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CN201420174269.7U
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Chinese (zh)
Inventor
贾鹏飞
郭昊天
王槟
闫永亮
任明晓
李翔
白聪聪
周向明
贾杰栋
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ZHENGZHOU JINYUAN SPECIAL TRANSFORMER ELECTRICS CO Ltd
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ZHENGZHOU JINYUAN SPECIAL TRANSFORMER ELECTRICS CO Ltd
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Priority to CN201420174269.7U priority Critical patent/CN203800695U/en
Application granted granted Critical
Publication of CN203800695U publication Critical patent/CN203800695U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to an intelligent low-voltage dual power switching power distribution cabinet control device comprising a controller, and a controller power supply circuit, a main and standby power supply state detection circuit, a circuit breaker state detection circuit, a dual power switching power distribution cabinet control circuit, a main power supply line incoming cabinet control circuit and a failure alarm circuit which are connected with the controller. The main power supply line incoming cabinet control circuit comprises a standby power supply circuit breaker auxiliary switch normally closed contact, a main power supply circuit breaker energy storage loop, a main power supply circuit breaker closing coil and a main power supply circuit breaker undervoltage coil. The dual power switching power distribution cabinet control circuit comprises a main power supply circuit breaker auxiliary switch normally closed contact, a standby power supply circuit breaker closing coil, a standby power supply circuit breaker opening coil and a standby power supply circuit breaker undervoltage coil. According to the utility model, dual power automatic switching can be realized, the advantage of high intelligence can be realized, so the intelligent low-voltage dual power switching power distribution cabinet control device is suitable for various standby power supplies, power supply system failures are judged automatically, and an alarm signal is given out to inform an electrician to perform maintenance and process the failures timely.

Description

A kind of intelligent low voltage duplicate supply switching control device for power distribution cabinet
Technical field
The utility model relates to the Low Voltage Electrical Apparatus in distribution system, especially a kind of intelligent low voltage duplicate supply switching control device for power distribution cabinet.
Background technology
Duplicate supply switching power distribution cabinet is the visual plant of electric power system distribution, its control device intelligent level height, directly have influence on the reliability of duplicate supply switching power distribution cabinet, particularly be widely used in duplicate supply switching control device for power distribution cabinet intelligent level perfect of the important place that bank, hospital, market, public place, hotel, data center, factory, airport, escape truck, fire-fighting system etc. can not power-off, improve power supply reliability, also significant for social stability harmony.
At present, the shortcoming that existing low-voltage dual power switching control device for power distribution cabinet exists is: 1, the control device of most of low-voltage dual power switching power distribution cabinets or manual, by manual operation; 2, adopt individually Control to realize automatic switching, can not Intelligent Measurement power supply and working state of circuit breaker, reliability is low.
Utility model content
The technical problems to be solved in the utility model: a kind of intelligent low voltage duplicate supply switching control device for power distribution cabinet is provided, and existing low-voltage dual power switching power distribution cabinet automaticity is low to solve, the problem of poor reliability.
For realizing above-mentioned technical problem, the technical solution of the utility model is a kind of intelligent low voltage duplicate supply switching control device for power distribution cabinet, comprises controller and the controller power supply circuits that are connected with described controller, main power supply state detection circuit, circuit-breaker status testing circuit, duplicate supply switching power distribution cabinet control circuit, main power supply incoming line cabinet control circuit, failure alarm circuit;
Described main power supply incoming line cabinet control circuit comprises auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock, main power supply breaker energy storage loop, main power supply breaker closing coil and the under-voltage coil of main power supply circuit breaker; The under-voltage coil of described main power supply circuit breaker is connected on main power supply loop; Auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock is connected with controller, main power supply with the circuit after the series connection of main power supply breaker closing coil; Main power supply breaker energy storage loop is connected with controller, main power supply;
Described duplicate supply switching power distribution cabinet control circuit comprises main power supply auxiliary switch for circuit breaker normally closed interlock, auxiliaries-supply circuit-breaker closing coil, auxiliaries-supply circuit-breaker switching winding and the under-voltage coil of auxiliaries-supply circuit-breaker; Described auxiliaries-supply circuit-breaker is under-voltage, and coil is connected on stand-by power supply loop; Auxiliaries-supply circuit-breaker closing coil is connected with controller, stand-by power supply with the circuit after the series connection of main power supply auxiliary switch for circuit breaker normally closed interlock; Auxiliaries-supply circuit-breaker switching winding is connected with controller, stand-by power supply.
Described controller adopts programmable logic controller (PLC).
Described main power supply state detection circuit comprises main power supply state detection circuit and stand-by power supply state detection circuit; Described main power supply state detection circuit comprises first, second, and third voltage relay normally open contact connected in series, and first, second, and third voltage relay coil is connected on the main power supply voltage circuit that enters main power supply incoming line cabinet; Described stand-by power supply state detection circuit comprises the 4th, the 5th and the 6th voltage relay normally open contact of series connection, and the 4th, the 5th is connected on the backup power source voltage loop that enters duplicate supply switching power distribution cabinet after being connected with a fuse respectively with the 6th voltage relay coil.
Described circuit-breaker status testing circuit comprises main power supply circuit-breaker status testing circuit and auxiliaries-supply circuit-breaker state detection circuit; Described main power supply circuit-breaker status testing circuit comprises the main power supply auxiliary switch for circuit breaker normally open contact being connected with controller; Described auxiliaries-supply circuit-breaker state detection circuit comprises the auxiliaries-supply circuit-breaker auxiliary switch normally open contact being connected with controller.
Described controller power supply circuits comprise the switching relay that connects controller, main power supply, and switching relay coil crossover is on the major loop of stand-by power supply.
Described failure alarm circuit comprises an electric whistle.
In described main power supply incoming line cabinet control circuit, also comprise main power supply breaker energy storage button, main power supply breaker closing button, main power supply breaker open operation button and main power supply breaker open operation coil; In described duplicate supply switching power distribution cabinet control circuit, also comprise manual/auto switch, auxiliaries-supply circuit-breaker switch knob and auxiliaries-supply circuit-breaker opening button; One end of main power supply breaker energy storage button is connected to main power supply, and the other end is connected with controller, main power supply breaker energy storage loop simultaneously; One end of main power supply breaker closing button is connected to main power supply, and the other end connects controller, auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock simultaneously; Main power supply breaker open operation button connect with main power supply breaker open operation coil after and main power supply breaker open operation coils from parallel connection of coils on main power supply loop; The end of convert of manual/auto switch connects stand-by power supply, and one end of auxiliaries-supply circuit-breaker switch knob connects the manual end of manual/auto switch, and the other end is connected with controller, main power supply auxiliary switch for circuit breaker normally closed interlock simultaneously; One end of auxiliaries-supply circuit-breaker opening button connects the manual end of manual/auto switch, and the other end connects and is connected with controller, auxiliaries-supply circuit-breaker switching winding simultaneously.
The beneficial effects of the utility model: 1, applied power source detects and Programmable control technology, intelligent decision main power supply, stand-by power supply situation and circuit-breaker status, control two circuit breakers, carry out energy storage, combined floodgate, tripping operation and barring program, realize dual-power automatic switching, saved manpower, financial resources; 2, intelligent degree is high, adapts to the multiple stand-by power supplies such as engine, transformer, UPS; 3, judge electric power system fault by controller and failure alarm circuit, send alarm signal, notify in time electrical maintenance processing, shorten interruption duration, reduce loss of outage.
Brief description of the drawings
Fig. 1 is control principle drawing of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1: as shown in Figure 1 and Figure 2, the utility model provides a kind of intelligent low voltage duplicate supply switching control device for power distribution cabinet, comprises main power supply circuit breaker, auxiliaries-supply circuit-breaker, controller and the controller power supply circuits that are connected with described controller, main power supply state detection circuit, circuit-breaker status testing circuit, duplicate supply switching power distribution cabinet control circuit, main power supply incoming line cabinet control circuit, failure alarm circuit.
Controller adopts programmable logic controller (PLC), and model is DVP14ES00R2.
Controller power supply circuits comprise switching relay CK, the L port of controller is connected to main power supply and stand-by power supply by switching relay the first normally open contact CK-1, and the N port of controller is connected to the N row of main power supply and stand-by power supply by switching relay CK the second normally open contact CK-2; Switching relay CK coil crossover is on the major loop of stand-by power supply.In the time that there is electricity on main power supply or any road of stand-by power supply, can provide power supply to controller, ensure that controller normally works.
Main power supply state detection circuit comprises main power supply state detection circuit and stand-by power supply state detection circuit; Described main power supply state detection circuit comprises first, second, and third voltage relay normally open contact between controller 24G port and X0 port connected in series, and first, second, and third voltage relay coil is connected on the main power supply voltage circuit that enters main power supply incoming line cabinet; Described stand-by power supply state detection circuit comprises the 4th, the 5th and the 6th voltage relay normally open contact being connected between controller 24G port and X2 port, and the 4th, the 5th is connected on the backup power source voltage loop that enters duplicate supply switching power distribution cabinet after being connected with a fuse respectively with the 6th voltage relay coil.
Circuit-breaker status testing circuit comprises main power supply circuit-breaker status testing circuit and auxiliaries-supply circuit-breaker state detection circuit; Described main power supply circuit-breaker status testing circuit comprises the main power supply auxiliary switch for circuit breaker normally open contact 1QF-1 being connected between controller X1 port and 24G port; Auxiliaries-supply circuit-breaker state detection circuit comprises the auxiliaries-supply circuit-breaker auxiliary switch normally open contact 2QF-1 being connected between controller X3 port and 24G port.
Main power supply incoming line cabinet control circuit comprises auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock 2QF-2, main power supply breaker energy storage loop 1QFD, main power supply breaker closing coil 1QFX and the under-voltage coil 1QFQ of main power supply circuit breaker; Main power supply incoming line cabinet control circuit loop is connected to main power supply by two fuse 6FU, 7FU; Main power supply circuit breaker is under-voltage, and coil 1QFQ is connected on main power supply loop; Auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock 2QF-2 is connected with controller Y3 port, main power supply with the circuit after main power supply breaker closing coil 1QFX series connection; Main power supply breaker energy storage loop 1QFD is connected with controller Y2 port, main power supply; Controller C2 port and C3 port are connected to main power supply by fuse 6FU simultaneously.
Duplicate supply switching power distribution cabinet control circuit comprises main power supply auxiliary switch for circuit breaker normally closed interlock 1QF-2, auxiliaries-supply circuit-breaker closing coil 2QFX, auxiliaries-supply circuit-breaker switching winding 2QFF and the under-voltage coil 2QFQ of auxiliaries-supply circuit-breaker; Duplicate supply switching power distribution cabinet control circuit loop is connected to stand-by power supply by two fuse 4FU, 5FU; Auxiliaries-supply circuit-breaker is under-voltage, and coil 2QFQ is connected on stand-by power supply loop; Auxiliaries-supply circuit-breaker closing coil 2QFX and main power supply circuit breaker auxiliary switchcircuit after normally closed interlock 1QF-2 series connection is connected with controller Y0 port, stand-by power supply; Auxiliaries-supply circuit-breaker switching winding 2QFF is connected with controller Y1 port, stand-by power supply; Controller C0 port and C1 port are connected to stand-by power supply by fuse 4FU simultaneously.
Failure alarm circuit comprises an electric whistle, and controller Y10 port is connected respectively power supply with C4 port, and electric whistle 1D is connected on the circuit between controller C4 port and power supply.
Operation principle of the present utility model and process are as follows: in the time that intelligent low-pressure duplicate supply switching control device for power distribution cabinet is devoted oneself to work, controller detects main power supply and backup power source voltage by main power supply state detection circuit, detect main power supply circuit breaker and auxiliaries-supply circuit-breaker on off state by circuit-breaker status testing circuit, if main power supply, stand-by power supply is not under-voltage, not phase shortage, in situation that Everything is fine, the preferential main power supply breaker energy storage of controlling, after energy storage finishes, automatically control main power supply breaker closing, now main power supply operation, stand-by power supply is in stand-by state, when main power supply high pressure has a power failure or transformer while breaking down, the tripping operation of main power supply circuit breaker decompression, intelligent controlling device control auxiliaries-supply circuit-breaker closes a floodgate, and now stand-by power supply puts into operation automatically.In the time that main power supply high pressure is sent a telegram here, controller detects main power supply incoming call by main power supply state detection circuit, and in the time that 30 second time kept stablizing, control main power supply breaker energy storage, after energy storage finishes, automatically control auxiliaries-supply circuit-breaker separating brake, main power supply incoming line cabinet breaker closing after the time delay several seconds, now main power supply brings into operation, and stand-by power supply is again in stand-by state, go round and begin again, realized low-voltage dual power automatic switching and locking.No matter be main power supply operation, or stand-by power supply operation, in the time that low-voltage power supply system has an accident circuit breaker trip, Intelligent Measurement control device automatic decision is fault outage, locking switching device, sends alarm signal by electric whistle.
Embodiment 2: have a power failure for convenience of overhaul of the equipments, can increase manual/auto switch 1K, main power supply breaker energy storage button 1SB, main power supply breaker closing button 2SB, main power supply breaker open operation button 3SB, auxiliaries-supply circuit-breaker switch knob 4SB, auxiliaries-supply circuit-breaker opening button 5SB and main power supply breaker open operation coil 1QFF in the intelligent low-pressure duplicate supply switching control device for power distribution cabinet of embodiment 1.Improve as follows: as shown in Figure 2, main power supply incoming line cabinet control circuit comprise auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock 2QF-2 and by main power supply breaker energy storage loop 1QFD, main power supply breaker closing coil 1QFX, main power supply breaker open operation coil 1QFF, main power supply circuit breaker is under-voltage parallel line that coil 1QFQ forms; Described parallel line is connected on main power supply loop; Main power supply incoming line cabinet control circuit loop is connected to main power supply by two fuse 6FU, 7FU; Main power supply breaker energy storage button 1SB connects with main power supply breaker energy storage loop 1QFD, main power supply breaker closing button 2SB connects with auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock 2QF-2, main power supply breaker closing coil 1QFX, and main power supply breaker open operation button 2SB connects with main power supply breaker open operation coil 1QFF; The Y2 port of described controller is connected with main power supply breaker energy storage button 1SB, main power supply breaker energy storage loop 1QFD simultaneously, and controller Y3 port is connected with auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock 2QF-2, main power supply breaker closing button 2SB simultaneously; Main power supply breaker open operation button 3SB, main power supply breaker open operation coil 1QFF connect afterwards and the under-voltage coil 1QFQ of main power supply circuit breaker is connected in parallel on main power supply loop; Controller C2 port and C3 port are connected to main power supply by fuse 6FU simultaneously.
The parallel line that described duplicate supply switching power distribution cabinet control circuit comprises main power supply auxiliary switch for circuit breaker normally closed interlock 1QF-2 and is made up of auxiliaries-supply circuit-breaker closing coil 2QFX, auxiliaries-supply circuit-breaker switching winding 2QFF and the under-voltage coil 2QFQ of auxiliaries-supply circuit-breaker; Described parallel line is connected on stand-by power supply loop; Duplicate supply switching power distribution cabinet control circuit loop is connected to stand-by power supply by two fuse 4FU, 5FU; Auxiliaries-supply circuit-breaker closing coil 2QFX is connected to manual/auto switch 1K and is manually held by main power supply auxiliary switch for circuit breaker normally closed interlock 1QF-2, auxiliaries-supply circuit-breaker button 4SB successively, and connect with manual/auto switch 1K, the end of convert of manual/auto switch 1K connects stand-by power supply by fuse 1UF4; Auxiliaries-supply circuit-breaker switching winding 2QFF is connected to manual/auto switch 1K by auxiliaries-supply circuit-breaker button 5SB and manually holds; Described manual/auto switch 1K automatic end is connected to C0 port and the C1 port of controller, controller Y0 port is connected with auxiliaries-supply circuit-breaker switch knob 4SB, main power supply auxiliary switch for circuit breaker normally closed interlock 1QF-2 simultaneously, and controller Y1 port is connected with auxiliaries-supply circuit-breaker opening button 5SB, auxiliaries-supply circuit-breaker switching winding 2QFF simultaneously.
While needing maintenance to have a power failure, manually/automatic switch 1K on intelligent low-pressure duplicate supply switching control device for power distribution cabinet is allocated to manual end, now main power supply incoming line cabinet and intelligent low-pressure duplicate supply switching control device for power distribution cabinet can carry out respectively closing by hand and separating brake.
The utility model adopts power state detection and circuit-breaker status to detect, and by the break-make of Programmable control technology control circuit breaker, has realized low-voltage dual power automatic switching and locking effect.

Claims (7)

1. an intelligent low voltage duplicate supply switching control device for power distribution cabinet, is characterized in that: comprise controller and the controller power supply circuits that are connected with described controller, main power supply state detection circuit, circuit-breaker status testing circuit, duplicate supply switching power distribution cabinet control circuit, main power supply incoming line cabinet control circuit, failure alarm circuit;
Described main power supply incoming line cabinet control circuit comprises auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock (2QF-2), main power supply breaker energy storage loop (1QFD), main power supply breaker closing coil (1QFX) and the under-voltage coil of main power supply circuit breaker (1QFQ); The under-voltage coil of described main power supply circuit breaker (1QFQ) is connected on main power supply loop; Auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock (2QF-2) is connected with controller, main power supply with the circuit after main power supply breaker closing coil (1QFX) series connection; Main power supply breaker energy storage loop (1QFD) is connected with controller, main power supply;
Described duplicate supply switching power distribution cabinet control circuit comprises main power supply auxiliary switch for circuit breaker normally closed interlock (1QF-2), auxiliaries-supply circuit-breaker closing coil (2QFX), auxiliaries-supply circuit-breaker switching winding (2QFF) and the under-voltage coil of auxiliaries-supply circuit-breaker (2QFQ); Described auxiliaries-supply circuit-breaker is under-voltage, and coil (2QFQ) is connected on stand-by power supply loop; Auxiliaries-supply circuit-breaker closing coil (2QFX) is connected with controller, stand-by power supply with the circuit after main power supply auxiliary switch for circuit breaker normally closed interlock (1QF-2) series connection; Auxiliaries-supply circuit-breaker switching winding (2QFF) is connected with controller, stand-by power supply.
2. intelligent low voltage duplicate supply switching control device for power distribution cabinet according to claim 1, is characterized in that: described controller adopts programmable logic controller (PLC).
3. intelligent low voltage duplicate supply switching control device for power distribution cabinet according to claim 1, is characterized in that: described main power supply state detection circuit comprises main power supply state detection circuit and stand-by power supply state detection circuit; Described main power supply state detection circuit comprises first, second, and third voltage relay normally open contact connected in series, and first, second, and third voltage relay coil is connected on the main power supply voltage circuit that enters main power supply incoming line cabinet; Described stand-by power supply state detection circuit comprises the 4th, the 5th and the 6th voltage relay normally open contact of series connection, and the 4th, the 5th is connected on the backup power source voltage loop that enters duplicate supply switching power distribution cabinet after being connected with a fuse respectively with the 6th voltage relay coil.
4. intelligent low voltage duplicate supply switching control device for power distribution cabinet according to claim 1, is characterized in that: described circuit-breaker status testing circuit comprises main power supply circuit-breaker status testing circuit and auxiliaries-supply circuit-breaker state detection circuit; Described main power supply circuit-breaker status testing circuit comprises the main power supply auxiliary switch for circuit breaker normally open contact (1QF-1) being connected with controller; Described auxiliaries-supply circuit-breaker state detection circuit comprises the auxiliaries-supply circuit-breaker auxiliary switch normally open contact (2QF-1) being connected with controller.
5. intelligent low voltage duplicate supply switching control device for power distribution cabinet according to claim 1, it is characterized in that: described controller power supply circuits comprise the switching relay (CK) that connects controller, main power supply, and switching relay (CK) coil crossover is on the major loop of stand-by power supply.
6. intelligent low voltage duplicate supply switching control device for power distribution cabinet according to claim 1, is characterized in that: described failure alarm circuit comprises an electric whistle (1D).
7. intelligent low voltage duplicate supply switching control device for power distribution cabinet according to claim 1, is characterized in that: in described main power supply incoming line cabinet control circuit, also comprise main power supply breaker energy storage button (1SB), main power supply breaker closing button (2SB), main power supply breaker open operation button (3SB) and main power supply breaker open operation coil (1QFX); In described duplicate supply switching power distribution cabinet control circuit, also comprise manual/auto switch (1K), auxiliaries-supply circuit-breaker switch knob (4SB) and auxiliaries-supply circuit-breaker opening button (5SB); One end of main power supply breaker energy storage button (1SB) is connected to main power supply, and the other end is connected with controller, main power supply breaker energy storage loop (1QFD) simultaneously; One end of main power supply breaker closing button (2SB) is connected to main power supply, and the other end connects controller, auxiliaries-supply circuit-breaker auxiliary switch normally closed interlock (2QF-2) simultaneously; Main power supply breaker open operation button (3SB) is connected with main power supply breaker open operation coil (1QFX) afterwards and main power supply breaker open operation coil (1QFX) is connected in parallel on main power supply loop; The end of convert of manual/auto switch (1K) connects stand-by power supply, one end of auxiliaries-supply circuit-breaker switch knob (4SB) connects the manual end of manual/auto switch (1K), and the other end is connected with controller, main power supply auxiliary switch for circuit breaker normally closed interlock (1QF-2) simultaneously; One end of auxiliaries-supply circuit-breaker opening button (5SB) connects the manual end of manual/auto switch (1K), and the other end connects and is connected with controller, auxiliaries-supply circuit-breaker switching winding (2QFF) simultaneously.
CN201420174269.7U 2014-04-11 2014-04-11 Intelligent low-voltage dual power switching power distribution cabinet control device Expired - Fee Related CN203800695U (en)

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CN201420174269.7U CN203800695U (en) 2014-04-11 2014-04-11 Intelligent low-voltage dual power switching power distribution cabinet control device

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Cited By (5)

* Cited by examiner, † Cited by third party
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
CN105048310A (en) * 2015-07-08 2015-11-11 成都绿迪科技有限公司 Power integrated detection distribution box
CN106531547A (en) * 2016-12-16 2017-03-22 黑龙江博瑞特高新技术开发有限公司 Bi-stable permanent magnet operating device and control method used for high-voltage dual-power automatic mutual input
CN108335463A (en) * 2018-04-03 2018-07-27 淮北矿业股份有限公司 A kind of underground central substation power down power transmission autoalarm
CN112467866A (en) * 2020-11-23 2021-03-09 顿汉布什(中国)工业有限公司 Dual-power switching control device of motor and control method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105048310A (en) * 2015-07-08 2015-11-11 成都绿迪科技有限公司 Power integrated detection distribution box
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
CN105048304B (en) * 2015-08-18 2017-08-04 中山市明阳电器有限公司 The electric interlocking installation of many many mother low-voltage distribution systems of inlet wire
CN106531547A (en) * 2016-12-16 2017-03-22 黑龙江博瑞特高新技术开发有限公司 Bi-stable permanent magnet operating device and control method used for high-voltage dual-power automatic mutual input
CN106531547B (en) * 2016-12-16 2019-12-13 黑龙江博瑞特高新技术开发有限公司 Bistable permanent magnet operating device for automatic mutual switching of high-voltage dual power supplies and control method
CN108335463A (en) * 2018-04-03 2018-07-27 淮北矿业股份有限公司 A kind of underground central substation power down power transmission autoalarm
CN112467866A (en) * 2020-11-23 2021-03-09 顿汉布什(中国)工业有限公司 Dual-power switching control device of motor and control method thereof

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Granted publication date: 20140827

Termination date: 20180411