SUITABILITY OF AGGREGATION METHODS OF INDUCTION MOTOR MODELS FOR PARAMETER IDENTIFICATION LOAD MODELING

Abstract

This paper focusses on the aggregation of multiple induction motors connected in parallel on the same bus bars into a single equivalent model using two methods of aggregations.This has been necessitated by the strong effects that the non linear loads have on power system characteristics and therefore erroneous modeling of these devices continues to be an area of greater uncertainty. Though various methods of aggregations have been used, comparison on their suitablity and accuracy on identification of aggregation model parameters has not been extensively explored. Appropriate dynamic load model aggregation reduces the computation time and provides a faster and efficient model derivation and parameters identification that are most sensitive to load dynamics. The simulations and analysis are implemented using MATLAB.The accuracy of these methods is compared to identify the most suitable aggregation method of IM model. Their performance is validated by evaluating the results obtained from industrial and standard individual induction motor and the aggregation model on IEEE 30 Bus standard system. The results obtained are suitable and practical.