COMPENSATION FOR NEGLECTING STATOR TRANSIENTS IN POWER-SYSTEM MODELS

An accurate simple model of alternators for power system stability stu dies has been developed. The model is based on a detailed model [1] th e validity of which has been verified earlier. The simplification is a chieved by omitting stator and transmission line transients from the d etailed model and introducing a compensation for the omission. It has been shown that the compensation has to be included at every time step . Since the order of the model is lower than the detailed one its comp utational speed is faster and memory requirement is less. The accuracy of the simple model including the compensation has been proved to be outstanding by comparing the results of the model with those obtained from the detailed model.