A statistical approach to the calculation of harmonics in MV systems caused by dispersed LV customers

Problems usually arise when predicting harmonics in public power supply systems due to the varying characteristics of the loads connected. Based on comprehensive measurements, a statistical load model is set up providing the harmonic parameters of all LV power systems fed by the same HV/MV feeder. Harmonic distortion in the MV power system caused by the variety of stochastic LV customers is determined by a Monte Carlo simulation approach applying the load model.