电机定子绝缘老化寿命预测研究进展

Research Progress on Prediction of Aging Life of Motor Stator Insulation

大型发电机在运行过程中受到运行状态和环境的影响,定子绝缘易出现损坏而导致发电机故障。定子绝缘寿命预测作为多年来研究的热点,也是提高发电机运行稳定性的重要途径。该文综合国内外研究,总结了当前几种绝缘寿命预测的方法,并对寿命预测方法进行分类比较,将绝缘预测方法分为基于回归分析的预测、基于智能算法的预测以及基于数据采集的预测,对三种方法在各种应用条件下的预测效果优劣进行分析,提出了当前研究中存在的问题及绝缘寿命预测方法未来的研究趋势。

Large generators are affected by operating conditions and environment during operation,and stator insulation is prone to damage leading to generator failure.As a hotspot of research for many years,stator insulation life prediction is an important method to improve the stability of generator operation.This paper summarizes the current methods of insulation life prediction,and classifies the insulation prediction methods into regression analysis based prediction,intelligent algorithm based prediction and data acquisition based prediction.The pros and cons of the three methods under various application conditions are analyzed.Finally,the problems existing in the current research and the future research trends of insulation prediction are proposed.