Probabilistic Harmonic Analysis for Waveform Distortion Assessment of Low Voltage Distribution Systems with Plug-in Hybrid Electric Vehicles

In this paper, a probabilistic direct method to assess the waveform distortion levels of low voltage distribution systems including plug-in hybrid electric vehicles charging stations is proposed. The method takes into account uncertainties in number of vehicles being charged, charging voltage and current levels, power battery status and capacity, and charging time duration. Numerical applications are performed by applying the proposed probabilistic harmonic analysis to assess the harmonic distortions of a test low voltage unbalanced distribution network.