中国电机工程学报2026，Vol.46Issue(5)：2115-2128,中插31,15.DOI:10.13334/j.0258-8013.pcsee.250516
基于电致发光效应的复合绝缘子内部导通性缺陷检测方法研究
Detection Method of Internal Conductivity Defects in Composite Insulators Based on Electroluminescence
摘要
Abstract
In recent years,the frequent occurrence of decay-like failures of composite insulators has become a severe issue threatening the safe and stable operation of power systems.These failures are often caused by the development of internal defects in insulators.Traditional detection methods suffer from susceptibility to environmental interference and low detection efficiency,which are not conducive to effective defect identification.This paper proposes a new method for detecting internal conductivity defects in composite insulators based on electroluminescence(EL).Firstly,distortion characteristics of insulator surface electric field with internal defects are analyzed through a finite element model to characterize the internal state of the insulators.Experiments show that ZnS:Cu electroluminescent(EL)composite materials can achieve luminescence response under high electric field conditions when excited by high-energy electron transitions and ultraviolet photons,which are also suitable for the service conditions of insulators.Samples of electroluminescent self-diagnostic composite insulators with internal conductivity defects are fabricated in the laboratory.Charging tests verify that the electroluminescent method can achieve self-identification of internal conductivity defects in insulators,and has high shape fidelity for defects.Finally,a comparative analysis is conducted to reveal the superiority of the proposed method over traditional detection methods.The results show that the proposed method can effectively identify composite insulators with conductivity defects situated within the blind zones of traditional methods,indicating promising application prospects.关键词
复合绝缘子/电致发光/带电检测/导通性缺陷/电场分布Key words
composite insulator/electroluminescence(EL)/live detection/conductivity defects/electric field distribution分类
信息技术与安全科学引用本文复制引用
张育铭,耿江海,彭波,周松松,毕建刚,侯思祖,何中峰,刘云鹏..基于电致发光效应的复合绝缘子内部导通性缺陷检测方法研究[J].中国电机工程学报,2026,46(5):2115-2128,中插31,15.基金项目
国家电网有限公司科技项目(5500-202455305A-1-2-LZ).Science and Technology Project of State Grid Corporation of China(5500-202455305A-1-2-LZ). （5500-202455305A-1-2-LZ）
