Probabilistic modeling of industrial systems for voltage distortion analyses

Referring to the IEEE industrial test system for harmonic modeling and simulation, the system impedance probabilistic model accounting for parameter uncertainty, load and supply variability is developed. Such a model together with the probabilistic model of the current pollution produced by an ASD is utilized to evaluate voltage harmonic and interharmonic distortion. The results, obtained by utilizing two methods characterized by different complexity and accuracy and, for each method, referring to different time scenarios, are compared among them.