摘要
讨论了一种为电动机提供全面电气保护和机械故障检测的方案。通过提取各种故障情况下电动机电流序分量的特点 ,在保护单元内为电动机提供简单完全的保护 ;运用小波分析方法 ,在工控机上对电动机转子断条、气隙偏心等机械故障进行实时监控和检测[1- 4] 。
The method of overall electrical protection and detecting mechanical faults is discussed in this paper.The simple complete protection for a motor in the protection units is described based on characters of motor's sequence currents in case of different faults.Real time monitoring and controlling and detecting of mechanical faults such as broken metal of motor's rotor,airspace eccentricity etc.are carried out on the process controller by using small wave analyzing method.
出处
《电力学报》
2000年第4期312-313,316,共3页
Journal of Electric Power
关键词
电动机
序电流
继电保护
小波变换
motors
sequence current
relay protection
small wave change
