基于ESPRIT-PSA与LightGBM算法的感应电动机转子断条数目诊断新方法  

Diagnosis of Broken Rotor Bars in Induction Motors by Combining ESPRIT-PSA and LightGBM Algorithm

作　　者：许伯强[1] 王晨曦[1] 何俊驰 XU Boqiang;WANG Chenxi;HE Junchi(School of Electrical and Electric Engineering,North China Electric Power University,Baoding 071000,China;Zhaoqing Power Supply Bureau of Guangdong Power Grid Co.,Ltd,Zhaoqing 526060,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]广东电网有限责任公司肇庆供电局,广东肇庆526060

出　　处：《华北电力大学学报（自然科学版）》2023年第5期27-34,共8页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51277077).

摘　　要：提出一种基于旋转不变信号参数估计技术ESPRIT(Estimation of signal parameters via rotational invariance technique)、模式搜索算法PSA(Pattern search algorithm)与轻型梯度提升机LightGBM(Light gradient boosting machine)结合的感应电动机转子断条数目诊断新方法。模拟了转子断条故障下的瞬时无功功率信号并用其衡量ESPRIT-PSA的性能。结果表明:ESPRIT-PSA只需短时数据就能准确测量瞬时无功功率信号中的转子断条故障特征分量。随后,为解决现有的电机瞬时无功功率信号分析MIRPSA(Motor instantaneous reactive power signal analysis)类方法无法准确诊断转子断条数目的问题,引入LightGBM对转子断条故障进行多分类以准确诊断转子断条数目。最后针对一台异步电动机进行转子断条诊断实验,结果表明:该方法是有效的,并且因将瞬时无功功率作为分析信号而适用于电机低转差率的情况。This paper proposed a new method to diagnose the number of broken rotor bars of induction motors based on estimation of signal parameters via rotational invariance technique(ESPRIT),pattern search algorithm(PSA)and light gradient boosting machine(LightGBM).The performance of ESPRIT-PSA was tested with the simulated instantaneous reactive power signal under the broken rotor bar fault situation.The results show that ESPRIT-PSA can clearly identify the broken rotor bar fault associated component in the instantaneous reactive power signal even with short-term sample.Recently,motor instantaneous reactive power signal analysis(MIRPSA)has been used to detect the broken rotor bar fault of induction motors due to its effectiveness in low slip situations.However,this type of method cannot accurately diagnose the number of broken rotor bars.Therefore,LightGBM was introduced to classify the broken rotor bar fault so as to accurately diagnose the number of broken rotor bars.Finally,the experiment was performed to diagnose the broken rotor bar of an induction motor.The results show that the method is effective and suitable for low slip situations for it uses instantaneous reactive power as the analysis signal.

关 键 词：异步电动机 转子断条 故障诊断 旋转不变信号参数估计技术 轻型梯度提升机 电机瞬时无功功率信号分析 

分 类 号：TM315[电气工程—电机]