水力发电厂高压断路器在线监测与诊断方法  

Online Monitoring and Diagnosis Method for High Voltage Circuit Breakers in Hydroelectric Power Plants

作　　者：陈东 Chen Dong(Skill Training Center of Sichuan Electric Power Company of State Grid,Chengdu,China)

机构地区：[1]国网四川省电力公司技能培训中心,四川成都

出　　处：《科学技术创新》2024年第24期43-46,共4页Scientific and Technological Innovation

摘　　要：本文主要探究了水力发电厂高压断路器的在线监测与诊断方法。利用传感器收集高压断路器的振动、温度等信号,经过降噪、滤波等处理后绘制信号趋势图,可以实现对高压断路器各项工况的动态监测。结合监测信号分析奇异点发生时间与模量极大值,可以直观呈现故障发生时间,为后续的故障检修与排除提供了依据。根据燃弧时间、开断时间、首开相在三相中的分布等特征参量,利用模糊评价法诊断高压断路器并评判其寿命周期,为日常养护与维修提供了参考,延长了高压断路器的使用寿命。This article mainly explores the online monitoring and diagnostic methods of high-voltage circuit breakers in hydroelectric power plants.By using sensors to collect vibration,temperature and other signals of high-voltage circuit breakers,and after processing such as noise reduction and filtering,a signal trend chart can be drawn to achieve dynamic monitoring of various working conditions of high-voltage circuit breakers.By combining monitoring signals to analyze the time of singularity occurrence and the maximum modulus,the time of fault occurrence can be visually presented,providing a basis for subsequent fault maintenance and elimination.Based on characteristic parameters such as arc ignition time,interruption time,and distribution of the first open phase in the three-phase system,the fuzzy evaluation method is used to diagnose and evaluate the service life of high-voltage circuit breakers,providing reference for daily maintenance and repair,and extending the service life of high-voltage circuit breakers.

关 键 词：高压断路器 信号趋势监测 模量极大值 隶属函数 

分 类 号：TM561[电气工程—电器] TM621