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 barsinto a single equivalent model using two methods of aggregations.This has been necessitated by the strong effectsthat the non linear loads have on power system characteristics and therefore erroneous modeling of these devicescontinues 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 beenextensively explored. Appropriate dynamic load model aggregation reduces the computation time and provides afaster and efficient model derivation and parameters identification that are most sensitive to load dynamics. Thesimulations and analysis are implemented using MATLAB.The accuracy of these methods is compared to identifythe most suitable aggregation method of IM model. Their performance is validated by evaluating the resultsobtained from industrial and standard individual induction motor and the aggregation model on IEEE 30 Busstandard system. The results obtained are suitable and practical.