浙江电力2024，Vol.43Issue(4)：105-112,8.DOI:10.19585/j.zjdl.202404011
考虑温度应力动态变化的继电保护装置可靠性研究
A study on the reliability of relay protection devices considering dynamic changes in temperature stress
摘要
Abstract
Relay protection devices contain numerous electronic components,and environmental factors such as temperature,humidity,and vibration can impact their reliability.Addressing the complex dynamic changes in tem-perature stress experienced by protection devices installed in switchgear during operation,this study considers envi-ronmental temperature as a random variable following a normal distribution.Based on the Arrhenius model and the Weibull model,conditional probability density functions along with probability density functions of temperature stress distribution are used to derive the overall probability density function,reliability function,and failure rate function of protection devices.Through numerical computation,the study assesses the impact of changes in tempera-ture mean and variance parameters on the reliability of protection devices,providing a theoretical basis for reliabil-ity research on relay protection devices during field operation.关键词
继电保护装置/可靠性/温度应力/正态分布/Arrhenius模型/Weibull模型Key words
relay protection device/reliability/temperature stress/normal distribution/Arrhenius model/Weibull model引用本文复制引用
龚杰,徐习东,杨剑友,方愉冬..考虑温度应力动态变化的继电保护装置可靠性研究[J].浙江电力,2024,43(4):105-112,8.基金项目
国家自然科学基金资助项目(62293502,62293500) （62293502,62293500）
国网浙江省电力有限公司温州供电公司科技项目(WZ920000857) （WZ920000857）
