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Fault locating method and device for circuit breaker switching-off electrical loop

A technology of electrical circuits and circuit breakers, which is applied in the field of fault finding of circuit breaker opening electrical circuits, can solve the problems of low efficiency in fault finding of circuit breaker opening circuits, and achieve the goals of shortening troubleshooting time, fast positioning, and efficient determination Effect

Active Publication Date: 2017-03-08
SHANDONG IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a fault finding method and device for the circuit breaker opening electrical circuit to solve the problem of low efficiency in fault finding of the circuit breaker opening circuit in the prior art

Method used

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  • Fault locating method and device for circuit breaker switching-off electrical loop
  • Fault locating method and device for circuit breaker switching-off electrical loop
  • Fault locating method and device for circuit breaker switching-off electrical loop

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Embodiment Construction

[0072] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0073] figure 1 The wiring schematic diagram of the circuit breaker opening electrical circuit provided for this application.

[0074] Such as figure 1 As shown in the figure, it includes: opening relay coil TBJ and its self-holding contact; closing position monitoring relay coil HWJ and its normally open contact; closing position monit...

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Abstract

The invention relates to a fault locating method and device for a circuit breaker switching-off electrical loop, and the method and device are used for the circuit breaker switching-off electrical loop. The method comprises the steps: detecting whether a monitoring red lamp at a circuit breaker switching-on position is turned on or not when a switching-off coil in the circuit breaker switching-off electrical loop does not respond to a switching-off operation; determining a first to-be-detected region if the monitoring red lamp at the circuit breaker switching-on position is not turned on, sequentially detecting all parts in the first to-be-detected region according to a first preset detection sequence, and determining a fault point in the first to-be-detected region; determining a second to-be-detected region if the monitoring red lamp at the circuit breaker switching-on position is turned on, sequentially detecting all parts in the second to-be-detected region according to a second preset detection sequence, and determining a fault point in the second to-be-detected region. The method can quickly locate a fault, provides great help for the subsequent maintenance, and effectively shortens the fault removing time.

Description

technical field [0001] The present disclosure relates to the field of electrical technology, and in particular to a fault finding method and device for a circuit breaker opening electrical circuit. Background technique [0002] The circuit breaker is a very important power supply equipment in the power system. The normal operation of the circuit breaker and whether it can be quickly dealt with after a fault are related to the safety, stability and reliability of the power system. [0003] In recent years, with the wide application of microcomputer protection measurement and control technology in the secondary circuit of circuit breakers, the phenomenon of circuit breaker opening circuit faults and the methods of finding and processing have also presented some new problems compared with the previous conventional protection of the opening circuit. features. Due to the improper search method, the search efficiency is low, which in turn causes the circuit breaker to prolong the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02G01R31/08
CPCG01R31/08G01R31/50Y04S10/52
Inventor 李传东李传红朱根巩鹏代永恒李倩付兆升
Owner SHANDONG IRON & STEEL CO LTD
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