Parallel microcomputer electrical anti-mislocking device

An anti-misoperation locking and parallel connection technology, which is applied in computer control, instruments, simulators, etc., can solve problems such as difficult troubleshooting, difficult maintenance, and long time consumption, and achieves easy modification, maintenance, clear logic, and simplified practice. The effect of wiring

CN109542013AActive Publication Date: 2019-03-29STATE GRID JIANGSU ELECTRIC POWER CO LIANYUNGANG POWER SUPPLY CO +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-03-29

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Abstract

The invention discloses a parallel microcomputer electrical anti-mislocking device, including a touch screen display, an indicator light, a power supply board, a CPU board, a main DSP board, a spare DSP board, an input board, and an output board. According to the parallel microcomputer electrical anti-mislocking device, logic of a locking loop is clear and explicit through anew locking method, locking logic can be checked at any time, and a specific fault point can be pointed out quickly which is prone for modification, repair and maintenance. At the same time, reliability under various faultconditions is realized by two kinds of locking modes which are simultaneous changing locking and different positionssumming locking. The parallel microcomputer electrical anti-mislocking device of theinvention ensures same reliability as an electrical locking mode plus a logic locking modeand at the same time has advantages of convenience in quick defect removal, easy in management, and simplicity in wiring.
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Description

technical field

[0001] The invention relates to a locking device, in particular to a parallel microcomputer electric anti-misoperation locking device. Background technique

[0002] In order to ensure the safety of personnel during operation, high-voltage electrical equipment such as substations and power plants should be equipped with perfect anti-misoperation locking devices to realize the "five preventions" function. At present, most of the locking methods are mechanical locking + electrical locking. Among them, the electrical locking method realizes the locking function through the series connection of auxiliary nodes of circuit breakers, isolating switches, grounding switches, electromagnetic locks and other devices (some locking conditions need to be connected in series with the logic locking conditions of the microcomputer measurement and control device), and the locking circuit is complicated. It brings great difficulties to daily management, defect elimination and m...

Examples

Embodiment

[0055] For clarifying the present invention, at first provide three definitions:

[0056] 1) Series condition input mode (hereinafter referred to as series): Connect the operation circuit of the equipment into the locking condition (auxiliary node of circuit breaker, isolating switch, grounding knife switch, electromagnetic lock and other devices) through cable connection, and all conditions are met In this case, the circuit can be turned on and powered on for operation.

[0057] 2) Parallel condition input mode (hereinafter referred to as parallel type): the blocking conditions (circuit breaker, isolating switch, auxiliary node of grounding switch, electromagnetic lock, etc.) ), the logic diagram of the closed circuit is established by the microcomputer device, the exit relay is opened when the conditions are met, and the operation circuit is only connected to the exit node of the relay.

[0058] 3) Microcomputer electrical locking method: The method of realizing locking thr...