同步电动机失步过程的数字计算机研究

失磁,电压大幅度下降或短暂断电,会引起同步电动机失步,需要采取适当的保护措施以防止不良后果。对这个问题的传统研究,是基于手解表征电动机暂态行为的微分方程组而得出的近似公式。作者以数字计算机为手段,利用较完善的数学模型,求出同步电动机在各种失步情况下主要参数定量的变化规律,为制定合理的失步保护方案及其整定提供理论依据。

A Computer-Aided Study of Phenomenon of Asynchronous Operation of Synchronous Motor

A synchronous motor can pull out of step under following conditions, failure of excitation, great drop of voltage or short loss of power supply. When the motor goes out of Step, suitable protective means is used. Conventional study of this phenomenon was based on approximate formulas, obtained from solution of a group of equations concerning the transient process of the motor, usually manually calculated. Using a digit computer and based on a complete mathematical model, a method is provited to find the behavior of a variety of main parameters during the synchronous motor going out of step. The result of the study offers a theortical basis for the designing of a complete relay protector against asynchronous operation and its computation.