This article mainly explores the online monitoring and diagnostic methods of high-voltage cir-cuit breakers in hydroelectric power plants.By using sensors to collect vibration,temperature and other sig-nals 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 main-tenance 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 diag-nose 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
Key words
high voltage circuit breaker/signal trend monitoring/maximum modulus/membership function
维普
万方数据