Research on state assessment method of key equipment in distribution network

Abstract

Condition-based maintenance is a scientific maintenance method based on computer technology, monitoring technology, fault diagnosis technology, etc. It is an maintenance system centered on the working state of power equipment. Condition-based maintenance aims to judge the health status of equipment through reliable condition monitoring methods, effective evaluation methods and prediction techniques without affecting the normal operation of related power equipment. In order to make the evaluation index system fully reflect the real operating state of key equipment in the distribution network, and considering the operability of the state evaluation of distribution network equipment, five types of equipment including distribution transformers, switch cabinets, power cables, overhead lines, and pole-mounted switches were selected. , including the state parameters of test information, operation information, and inspection information, and referring to the formation mechanism of power distribution equipment faults, to establish a hierarchical state evaluation index system for key equipment in the distribution network.