CN209001660U - A kind of transformer and distribution power station power transfer device - Google Patents

A kind of transformer and distribution power station power transfer device Download PDF

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Publication number
CN209001660U
CN209001660U CN201821715529.1U CN201821715529U CN209001660U CN 209001660 U CN209001660 U CN 209001660U CN 201821715529 U CN201821715529 U CN 201821715529U CN 209001660 U CN209001660 U CN 209001660U
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China
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relay
power supply
power
transformer
plc controller
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CN201821715529.1U
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Chinese (zh)
Inventor
杨娟
毕卫宁
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Shandong Iron and Steel Co Ltd
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Shandong Iron and Steel Co Ltd
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Priority to CN201821715529.1U priority Critical patent/CN209001660U/en
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Abstract

A kind of transformer and distribution power station power transfer device, it include: PLC controller, the PLC controller is separately connected intermediate relay unit and power supply switch unit, and the PLC controller is siemens PLC CPU244 or siemens PLC CPU244XP or siemens PLC CPU226;The intermediate relay unit for PLC controller described in insulation blocking, and realizes the switching of the power supply of the PLC controller;The intermediate relay unit includes intermediate relay K1-K9, intermediate relay ZJ 1.It has well solved the problem of manual switching power supply in transformer and distribution power station system, and the degree of automation is higher, improves work efficiency, and reduces operating cost, improves the degree of automation and reliability of transformer and distribution power station.

Description

A kind of transformer and distribution power station power transfer device
Technical field
The utility model relates to transformer and distribution power station Switching power automatic fields more particularly to a kind of transformer and distribution power station power supply to switch Device.
Background technique
Some transformer and distribution power stations have two-way 6kV or 10kV electric power incoming line, and equipped with two transformers, the side 380/220V is used The mode powering load of sectionalized single busbar connection realizes low-voltage bus bar segmentation, the system diagram of transformer and distribution station such as Fig. 1 by network interconnecting circuit Shown: in figure, QF1, QF2 are 2 low-pressure side incoming breaker of power supply 1 and power supply, and QF3 is low-voltage bus bar network interconnecting circuit, QF4- QF7 is shunt circuitbreaker.QF1-QF7 is DW15 type low-voltage circuit breaker.When normal operation by power supply all the way be all loads supply Electricity, another way power supply are in stand-by state, when the plan of higher level's power supply department is to that road power outage just in powering load, Electric substation operator on duty needs manual operation in advance, and load is switched to another way power supply power supply, it is assumed that load is by transformer T1 Powering load, the power supply 1 where present T1 will have a power failure, and need to pour into all loads into the power supply 2 where transformer T2, by T2 To all load supplyings, need first to disconnect 1 main breaker QF1 of power supply in this way, since QF3, QF4, QF5QF6, QF7 are DW15 Low pressure all-purpose breaker, this type breaker have the function of o-volt protection, while disconnecting QF1, QF3, QF4, QF5, QF6, QF7 also can automatic tripping, disconnect QF1 after 2 main breaker QF2 of power turn-on, then successively close QF3, QF4, QF5, QF6, QF7 realize that load is switched by the power supply of power supply 1 and power for power supply 2, complete switching of power supply operation.Since manual operation is compared It is cumbersome, it needs to carry out complicated switching of power supply operation, since manual operation efficiency is lower, causes power off time longer, and be easy Maloperation is generated, security risk is caused to personnel and equipment.
Utility model content
In order to solve the above-mentioned technical problem, the utility model proposes a kind of transformer and distribution power station power transfer devices, its safety can It leans on, high degree of automation.
To achieve the goals above, the scheme that the utility model uses is:
PLC controller, the PLC controller are separately connected intermediate relay unit and power supply switch unit, the PLC Controller is siemens PLC CPU244 or siemens PLC CPU244XP or siemens PLC CPU226;It is described Intermediate relay unit includes intermediate relay K1-K9, intermediate relay ZJ 1, one end of the intermediate relay K1-K9 with The unlike signal end of PLC controller is electrically connected, and the other end of the intermediate relay K1-K9 is electrically connected with zero-power line N, described Intermediate relay ZJ 1 includes 3, and first intermediate relay ZJ 1 is separately connected the zero-power line N and power firestreak L, second intermediate relay ZJ 1 are separately connected the power firestreak L terminals and power supply 1 of the PLC controller, third The intermediate relay ZJ 1 is separately connected the power firestreak L terminals and power supply 2 of the PLC controller;
The intermediate relay unit for PLC controller described in insulation blocking, and realizes the confession of the PLC controller The switching of power supply;
The power supply switch unit, for switching the power supply of transformer and distribution power station.
The intermediate relay unit includes intermediate relay K1-K9, intermediate relay ZJ 1.
Optionally, institute's power supply switch unit includes switch S0 and switch S1.
It optionally, further include breaker unit, the breaker unit connects the PLC controller, the breaker list Member includes circuit breaker Q F1-QF7.
The beneficial effects of the utility model have: the problem of having well solved manual switching power supply in transformer and distribution power station system, The degree of automation is higher, improves work efficiency, and reduces operating cost, improves the degree of automation of transformer and distribution power station and reliable Property.
Detailed description of the invention
Fig. 1 shows the system diagram of existing transformer and distribution power station;
Fig. 2 shows the component connection figures according to embodiment described in the utility model.
Specific embodiment
In order to be better understood by the technical solution of the utility model, the utility model is made furtherly with reference to the accompanying drawing It is bright.
As shown in Fig. 2, a kind of transformer and distribution power station power transfer device, comprising:
PLC controller, the PLC controller are separately connected intermediate relay unit and power supply switch unit, the PLC Controller is siemens PLC CPU244 or siemens PLC CPU244XP or siemens PLC CPU226;
The intermediate relay unit for PLC controller described in insulation blocking, and realizes the confession of the PLC controller The switching of power supply;The intermediate relay unit includes intermediate relay K1-K9, intermediate relay ZJ 1.
The power supply switch unit, for switching the power supply of transformer and distribution power station.The power supply switch unit includes switch S0 and switch S1.
It further include breaker unit, the breaker unit connects the PLC controller, and the breaker unit includes disconnected Road device QF1-QF7.
In order to be better understood by the technical program, the utility model is described further below with reference to the course of work:
With the specific connection relationship of all parts of siemens PLC the utility model are as follows:
0.0 pin of the side N of the CPU224 passes through intermediate relay K1 connection intermediate relay ZJ 1, the N of the CPU224 0.1 pin of side passes through intermediate relay by intermediate relay K2 connection intermediate relay ZJ 1,0.2 pin of the side N of the CPU224 0.3 pin of the side N of device K3 connection intermediate relay ZJ 1, the CPU224 passes through intermediate relay K4 connection intermediate relay 0.4 pin of the side N of ZJ1, the CPU224 pass through intermediate relay K5 connection intermediate relay ZJ 1, the side N of the CPU224 0.5 pin is connected by intermediate relay K6
0.6 pin of the side N of intermediate relay ZJ 1, the CPU224 passes through intermediate relay K7 connection intermediate relay 0.7 pin of the side N of ZJ1, the CPU224 pass through intermediate relay K8 connection intermediate relay ZJ 1, the side N of the CPU224 1.0 pins pass through intermediate relay K9 connection intermediate relay ZJ 1.0.0 pin of the side M of the CPU224 connects button switch 0.1 pin of the side M of S0, the CPU224 connect button switch S1, and 0.2 pin of the side M of the CPU224 connects opening button 0.2 pin of the side M of S2, the CPU224 connect circuit breaker Q F1, and 0.3 pin of the side M of the CPU224 connects circuit breaker Q F2, institute 0.5 pin of the side M for stating the connection of 0.4 pin of the side M the circuit breaker Q F3, the CPU224 of CPU224 connects circuit breaker Q F4, described 0.6 pin of the side M of CPU224 connects circuit breaker Q F5, and 0.7 pin of the side M of the CPU224 connects circuit breaker Q F6, described 1.0 pin of the side M of CPU224 connects circuit breaker Q F7.
S0 is to be switched by power supply 1 for 2 button of power supply, and S1 is that power supply 2 is switched as 1 button of power supply, can will when pressing SO The power supply of transformer and distribution power station, which has power supply 1 to switch, can have electricity for the power supply of transformer and distribution power station when pressing S1 for power supply 2 It switches as power supply 1 in source 2.K1-K9 is intermediate relay, they play the work of insulation blocking PLC as the device output relay With for controlling the incoming breaker of transformer and distribution power station point, network interconnecting circuit and shunt circuitbreaker, wherein K1 and K2 are respectively used to electricity 1 low pressure of source surveys the on/off switch of circuit breaker Q F1, and K3 and K4 are respectively used to the on/off switch that 2 low pressure of power supply surveys circuit breaker Q F2, and K5 is used for The combined floodgate of network interconnecting circuit QF3, K6-K9 are respectively used to the combined floodgate of shunt circuitbreaker QF4-QF7.QF1-QF7 is the auxiliary of breaker Normally opened contact is helped, for detecting the operating status of each breaker.ZJ1 is intermediate relay, utilizes the normally opened and normally closed touching of one group Point realizes that power supply 1 and the automatic switchover of power supply 2 are powered PLC.
Technical solution described in the utility model includes the CPU224 type of Siemens S7-200 PLC controller, intermediate relay With power supply switching push button, PLC controller is the core control equipment of the part, can be carried out according to the requirement for actually entering output Selection, we select the CPU224 type PLC of Siemens S7-200, and CPU244 has 14 points of inputs and at 10 points in terms of hardware configuration Output, inside have multiple energization delay relays, power-off delay relay and intermediate relay, can satisfy the design completely Needs.In addition, its working power be alternating current 220V, inside have a storage capacitor, with 2-5s delay for electric work Can, its power supply is automatically switched to a simple two-way, the switching of power supply will not cause PLC movement disorderly because of power-off restoration Disorderly.The device can realize the auto switching and network interconnecting circuit of two-way power supply according to the action situation of switching of power supply button With the automatic closing of shunt circuitbreaker.The device is equipped with two power supply switching push buttons and 9 intermediate relays, realizes two-way electricity The auto switching and network interconnecting circuit in source and the automatic closing of shunt circuitbreaker.The device has very big flexibility, Ke Yigen According to transformer and distribution power station device configuration situation, neatly adjustment technology scheme, meets actual production demand.The device can be to change distribution The operating status stood is detected, and only when two power supply switching push button action situations meet logic, which can just be taken Corresponding movement, prevents personnel misoperation and causes the system failure.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model Within enclosing.

Claims (3)

1. a kind of transformer and distribution power station power transfer device characterized by comprising
PLC controller, the PLC controller are separately connected intermediate relay unit and power supply switch unit, the PLC control Device is siemens PLC CPU244 or siemens PLC CPU244XP or siemens PLC CPU226;The centre Relay unit includes intermediate relay K1-K9, and intermediate relay ZJ 1, one end of the intermediate relay K1-K9 and PLC are controlled The unlike signal end of device processed is electrically connected, and the other end of the intermediate relay K1-K9 is electrically connected with zero-power line N, the centre Relay ZJ1 includes 3, and first intermediate relay ZJ 1 is separately connected the zero-power line N and power firestreak L, and second A intermediate relay ZJ 1 is separately connected the power firestreak L terminals and power supply 1 of the PLC controller, during third is described Between relay ZJ1 be separately connected the power firestreak L terminals and power supply 2 of the PLC controller;
The intermediate relay unit for PLC controller described in insulation blocking, and realizes the power supply electricity of the PLC controller The switching in source;
The power supply switch unit, for switching the power supply of transformer and distribution power station.
2. transformer and distribution power station power transfer device according to claim 1, which is characterized in that institute's power supply switch unit includes opening Close S0 and switch S1.
3. transformer and distribution power station power transfer device according to claim 1, which is characterized in that it further include breaker unit, institute It states breaker unit and connects the PLC controller, the breaker unit includes circuit breaker Q F1-QF7.
CN201821715529.1U 2018-10-23 2018-10-23 A kind of transformer and distribution power station power transfer device Active CN209001660U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821715529.1U CN209001660U (en) 2018-10-23 2018-10-23 A kind of transformer and distribution power station power transfer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821715529.1U CN209001660U (en) 2018-10-23 2018-10-23 A kind of transformer and distribution power station power transfer device

Publications (1)

Publication Number Publication Date
CN209001660U true CN209001660U (en) 2019-06-18

Family

ID=66805343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821715529.1U Active CN209001660U (en) 2018-10-23 2018-10-23 A kind of transformer and distribution power station power transfer device

Country Status (1)

Country Link
CN (1) CN209001660U (en)

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