Composite interlocking device for power distribution equipment

A technology for locking devices and power distribution equipment, applied in circuit devices, electrical components, information technology support systems, etc., can solve problems such as unrealistic error prevention devices and cost constraints, and achieve reliable work, low power consumption, and simple structure and principle. Effect

Inactive Publication Date: 2014-05-21
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the large-scale promotion of distribution automation transformation projects, the number of distribution automation terminals connected to the main distribution station has increased sharply, and the number of distribution circuit breakers and load switches that can realize remote remote operation functions is also increasing. Install an anti-misoperation locking device at the power distribution site, but due to the space limitation and cost constraints of the ring net box, switch cabinet, substation, switch on the column, etc. It is unrealistic to install a wrong device, so there is a need for a small anti-mislocking device that is low in cost, reliable in operation, and capable of compound conditional locking of the remote control circuit.

Method used

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  • Composite interlocking device for power distribution equipment
  • Composite interlocking device for power distribution equipment
  • Composite interlocking device for power distribution equipment

Examples

Experimental program
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing:

[0017] Such as figure 1 As shown, the embodiment of the present invention is driven by a single-chip microcomputer IC1, a 2.4G wireless transceiver module IC2, a 5V voltage stabilizing circuit module IC3, a 48V voltage stabilizing circuit module IC4, two optical isolation blocking signal acquisition circuits and a relay Circuit composition. The microcontroller IC1 is connected to the optical isolation blocking signal acquisition circuit through the ports IO1 and IO2. When the input is at a high level, it will judge that the blocking condition is "true", output a high level at the IO3 port, and drive the relay connected to the IO3 port to disconnect the remote control circuit.

[0018] The single chip microcomputer is connected with the 2.4G wireless signal transceiver module through the SPI bus.

[0019] The 5V voltage stabilizing circuit module IC3 adopts an AC 220V powe...

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PUM

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Abstract

The invention relates to a composite interlocking device for power distribution equipment. The composite interlocking device consists of a singlechip, a voltage stabilizing circuit module and a terminal strip, and is characterized in that an optical isolation interlocking signal acquisition circuit consisting of a resistor, an optical isolator and a voltage stabilizing tube is arranged between the singlechip and an external interlocking node introduction terminal of the terminal strip; a relay driving circuit consisting of an optical isolator, a resistor, a triode and a relay coil is further connected to the singlechip. A passive interlocking node can be accessed through a cable, and an interlocking signal can be received through 2.4G wireless communication. Meanwhile, an abnormity alarm signal is transmitted to a power distribution automation terminal through 2.4G wireless communication, thereby realizing remote monitoring of remote loop interlocking information.

Description

technical field [0001] The invention relates to a control device for electrical equipment, in particular to a composite locking device for power distribution equipment. Background technique [0002] At present, the circuit breakers and load switches used in the field such as power distribution ring net box, switchgear, substation, and pole-mounted switch do not have remote control anti-misoperation locking devices. With the large-scale promotion of distribution automation transformation projects, the number of distribution automation terminals connected to the main distribution station has increased sharply, and the number of distribution circuit breakers and load switches that can realize remote remote operation functions is also increasing. Install an anti-misoperation locking device at the power distribution site, but due to the space limitation and cost constraints of the ring net box, switch cabinet, substation, switch on the column, etc. It is unrealistic to install a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02B90/20Y04S40/126
Inventor 石文江
Owner STATE GRID CORP OF CHINA
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