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Microcomputer protection device to prevent misoperation

A microcomputer protection device and misoperation technology, applied in emergency protection circuit devices, electrical components and other directions, can solve the problems of waste of equipment resources, unfavorable on-site management, large randomness, etc., to reduce the probability of misoperation and improve electricity safety. sex, reduce the effect of manual operation

Active Publication Date: 2019-08-20
安徽楚通电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, each high-voltage switchgear needs to be connected to three to five high-voltage electromagnetic locks, and at the same time, the auxiliary contact of the grounding switch is connected to the closing circuit of the high-voltage switchgear to realize it, resulting in waste of equipment resources and unnecessary auxiliary contacts. Reliability, it is easy to cause misoperation; at the same time, anyone who can close the switch can manually operate the opening and closing circuit of the opening and closing circuit breaker. The safety of electricity use is not safe, and the randomness is relatively large, which is not conducive to on-site management.

Method used

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  • Microcomputer protection device to prevent misoperation
  • Microcomputer protection device to prevent misoperation
  • Microcomputer protection device to prevent misoperation

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Experimental program
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Effect test

Embodiment 1

[0020] refer to Figure 1-5 As shown, the present invention provides a microcomputer protection device for preventing misoperation. The microcomputer protection device integrates the circuit breaker module for preventing misopening and closing, the isolation switch module for preventing on-load opening and closing, the grounding switch module for preventing live connection / closing, and Prevent closing of circuit breaker modules with grounding switches. in:

[0021] The circuit breaker module for preventing false opening and closing realizes the control of closing and tripping of the switch through the control panel input control command of the microcomputer protection device, which includes a tripping protection circuit for realizing tripping and a closing protection circuit for realizing closing , and the control power supply C1, the air switch ZK and the control busbar, wherein the control busbar refers to the power line for the secondary side of the high-voltage switchgear...

Embodiment 2

[0029] In this embodiment, a third high-voltage current detection circuit and a third acquisition circuit are added to the circuit breaker module for preventing the on-time closing of the grounding switch described in Embodiment 1, and the output terminal of the third high-voltage current detection circuit passes through the first The three acquisition circuits are connected to the signal input terminals of the third central processing unit. In this embodiment, when the grounding switch auxiliary contact 1QF fails, the third central processing unit cannot detect the closing signal of the grounding switch JD. At this time, the switch is closed, the high-voltage primary current flows through the high-voltage circuit breaker QF, flows to the grounding switch JD, and is short-circuited to the ground; at this time, the third high-voltage current detection circuit detects the corresponding short-circuit current to the ground, so that the third central processing unit sends a trip ins...

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Abstract

The invention discloses a microprocessor protection device capable of preventing misoperation. The device is used for integrating a breaking-closing prevention circuit breaker module, a load breaking-closing prevention isolation switch module, a live-line hanging / closing prevention grounding switch module and a closing prevention circuit breaker module with a grounding switch into an existing microprocessor protection device, meanwhile, a trip instruction can be given out when ground short circuit occurs in a high-voltage circuit breaker by combining the existing microprocessor protection device, so that the high-voltage circuit breaker is switched off, the basic protection function of the microprocessor protection device is achieved, the five-proof function is also achieved, and the power utilization safety is improved. Moreover, the switch-on and switch-off of the corresponding circuit breaker and the switch are controlled by a detected current value in a circuit, so that intelligence is achieved, manual operation is reduced, and the probability of misoperation is reduced.

Description

technical field [0001] The present invention relates to a microcomputer protection device, in particular to a circuit breaker capable of preventing false opening and closing, an isolating switch with loads, an electrified grounding switch, and a circuit breaker with a grounding switch for preventing misoperation. microcomputer protection device. Background technique [0002] The microcomputer protection device is an economical protection for the integration of measurement, control, protection, and communication; it is tailor-made for the high-voltage power distribution room of the distribution network terminal, with three-stage non-directional current protection as the core, equipped with power grid The parameter monitoring and collection function can save the traditional ammeter, voltmeter, power meter, frequency meter, watt-hour meter, etc., and can transmit the measurement data and protection information to the host computer through the communication port to facilitate th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26H02H7/22
Inventor 冯军马瑞
Owner 安徽楚通电气股份有限公司