A review of probabilistic methods for the analysis of low frequency power system harmonic distortion

This paper describes the various techniques available for the analysis of power system harmonic distortion generated by nonlinear loads having random variation. The techniques may be classified as either direct Monte-Carlo based or detailed, where Monte-Carlo simulation is used with complex convertor models. It is concluded that the methods are able to produce accurate information which stand up to verification against measurement and that the results of the analysis are in the correct form for use with the proposed harmonic standards to limit distortion levels