Generalized load modeling in the presence of harmonics and distortion

Abstract

The importance of using better load models in power system analyses is addressed. A new time-domain load modeling technique that is based on actual recorded steady state power system measurements is presented, and the incorporation of the load model developed into a harmonic load flow program that is based on the bus admittance matrix method is shown. The load model is perfectly general and can be used to model linear or nonlinear loads in the presence or absence of harmonic distortion. Since the model is based on physically realizable network elements, several harmonic-related problems can be addressed using the suggested approach. The problem of power factor correction in the presence of harmonics and distortion is used as an example to show the efficacy of the method.