异步电动机故障诊断及综合保护的研究

Study of Faults Dialgnosis and Comperhensive Protection to Asynchronous Motors

本文提出了检测电动机负序及零序电流分量和电流幅值的电动机保护故障判据，该判据能够基本覆盖电动机的常见故障，并可实现电动机的自动故障诊断，从而达到电力机保护的智能化。文中详细论述了该故障判据的基本原理和实现方法，所研制的具有故障诊断功能的智能化电动机综合保护装置通过了工业运行试验，获得了满意的效果。

A set of new fault critics for asynchronous motors protection is proposed based on datection of negative and zero sequence components of motor currents and maghtude of the same. The proposed criteris can basically cover the most of common occurring faults and it is possible to-realizeautomatic faults diagnosis intelligent motor protection . An intellectual comprehensive motot protection device for faults diagnosis has been comtructed by authors and has -passed industrial tests satisfactorily.