Abstract

This paper presents a case example of simulations of the total harmonic load currents when the electric vehicle charging is added to the residential area distribution network workday harmonic current load profiles. For the distribution network harmonic current data, actual recorded harmonic daily load patterns of a residential area low-voltage network are used. Vehicle behavior and daily utilization estimates are based on a traffic statistic study results. The electric vehicles harmonic current loads were measured for 4 different commercially available vehicles. Based on the traffic survey, the total EV charging demand has been simulated with Monte Carlo methods used and total distribution network harmonic currents presented. Results of the simulation are focusing on the 3rd and 5th harmonic currents. It will be presented that it is highly likely that there will be significant harmonic cancellation of the harmonic currents also for the lower order of harmonics present. Results of the study indicate rather minor increase in the harmonic currents due to EV charging.

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