Fault Type Judgment Method for Overhead Transmission Lines

Abstract

The invention discloses an overhead transmission line fault type judgment method which includes the steps: acquiring fault waveforms of electric signals when an overhead transmission line is faulted; calling a pre-stored corresponding relation among the fault waveforms and fault types; determining the fault types corresponding to the fault waveforms according to the corresponding relation. By the aid of the technical scheme, the fault types are effectively and rapidly judged at low cost according to the fault waveforms at the first time, and subsequent rush repair operation is facilitated. Therefore, the method solves the technical problems that the fault types cannot be pre-judged at the first time in a traditional manual on-site line checking mode after faults happen, efficiency is low, equipment purchase, operation and maintenance costs are increased in a method of additionally mounting a special line fault identification system, and the contradiction between efficiency improvement and cost reduction is incompatible.

Description

technical field [0001] The invention relates to the field of electric power transmission, in particular to a method for judging fault types of overhead power transmission lines. Background technique [0002] In related technologies, the fault recording technology uses a fault recorder as a device carrier. The fault recorder is a device that can automatically record the waveform, time and circuit breaker action of the current and voltage changes before and during the fault of the line. Through the recorded waveforms, the fault type can be analyzed and determined more accurately, and the approximate range (distance number) of the fault point can be calculated, which provides an important basis for fault inspection, analysis and identification of faults, and restoration of normal power supply. [0003] The fault recorder has been widely used in the power grid. It can not only store the recorded fault data in the memory, but also transmit the recorded fault record data to the r...

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a method for judging the fault type of overhead transmission lines, at least after solving the fault, the traditional manual on-site inspection mode cannot predict the fault type at the first time, and the efficiency is low, so a dedicated line fault identification system is installed This method increases the cost of equipment procurement and operation and maintenance, resulting in the irreconcilable technical problem of improving efficiency and reducing costs

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