Induction motor modelling and interfacing technique for fast transient stability simulation

Abstract

This paper presents a numerically robust algorithm for the inclusion of induction motor loads for fast transient stability simulation of large power systems. The proposed method involves the simultaneous solution of the equations which describe the induction motor dynamics with the equations of network and generators. The interfacing technique is based on the prediction of the motor's slip EMFs using extrapolation. The application of the proposed method in the analysis of motor dynamics during bus short circuit and free acceleration are presented along with an independent corroboration.