Breakage fault positioning method, device and equipment for circuit breaker control loop

Abstract

The invention relates to a circuit breaker control loop disconnection fault positioning method, device and equipment. The method comprises steps of obtaining a professional division interface node oran equipment structure interface node of a control loop after a disconnection fault happens to the control loop; performing binary search based on the professional division interface node or the equipment structure interface node to determine a fault area of the control loop; acquiring key nodes of the fault area or element contacts with the fault rate higher than the preset fault rate in the fault area, and carrying out binary search based on the key nodes or the element contacts so as to determine fault points of the control loop. The method is advantaged in that binary processing is carriedout based on professional division interface nodes or equipment structure interface nodes of the control loop, compared with a point-by-point electricity measurement method and a simple dichotomy, fault location is fast, accuracy is high, and universality is strong.

Description

technical field [0001] The invention relates to the technical field of power fault detection, in particular to a method, device and equipment for locating a disconnection fault of a control circuit of a circuit breaker. Background technique [0002] With the increasing demand for power supply reliability, the restoration of the operating status of power equipment after failure has become increasingly urgent. In the power system, the control loop plays an indispensable role as the "neural network" of the power equipment. The normal operation of the power equipment control loop is directly related to the safety and stability of the power system. Therefore, how to quickly eliminate the faults on the control loop is the key to the operation and maintenance of power equipment for the high power supply reliability of the power system. [0003] In the process of troubleshooting and locating control circuit faults, the point-by-point electrical measurement method is more commonly u...

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Problems solved by technology

[0005] Based on this, it is necessary to address the large number of measuring points in the current point-by-point electrical measurement method, the long time to find the terminal, and the limitations of on-site operation and maintenance in the simple dichotomy method, which often cannot quickly locate the fault point and may even cause a fault Point troubleshooting failure problem, provide a circuit breaker control circuit disconnection fault location method, device and equipment

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