供电电压闪变对异步电动机转子故障在线检测的影响及应对
Influence of Supply Voltage Flicker on Rotor Fault Online Detection of Induction Motors and Countermeasures
许伯强 1孙丽玲1
作者信息
- 1. 华北电力大学电力工程系,河北省 保定市 071003
- 折叠
摘要
供电电压闪变可能对异步电动机转子故障在线检测产生不利影响,导致基于定子电流信号分析(motor current signature analysis,MCSA)的转子故障在线检测方法失效.通过理论分析,揭示供电电压闪变恶化转子故障在线检测性能的机制.提出免于供电电压闪变影响的异步电动机转子故障在线检测方法,首先,根据转子故障主特征频率分量预判转子健康或故障;继而,根据转子故障独有的辅助特征频率分量进一步确认转子健康或故障.仿真与实验结果证明了该方法的有效性.
Abstract
Supply voltage flicker might adversely influence the rotor fault online detection of induction motors,making the motor current signature analysis(MCSA)based detection method ineffective.Through theoretical analysis,this paper reveals the mechanism that supply voltage flicker exacerbates the performance of rotor fault online detection.We present an online rotor fault detection method that is immune to supply voltage flicker.This method comprises two main steps:first,a preliminary judgment of the rotor's health or fault status is made based on the primary characteristic components of rotor faults;second,the preliminary judgment is further verified using auxiliary components that are uniquely associated with rotor faults.Simulation and experimental results demonstrate the effectiveness of the presented method.
关键词
异步电动机/转子故障/转子断条/供电电压闪变/在线检测Key words
induction motor/rotor fault/broken rotor bar/supply voltage flicker/online detection引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据