The effect of temporal and spatial variation of harmonic sources on annual harmonic performance of distribution networks

The increasing penetration of converter connected distributed generation and the electric vehicles in today´s distribution network, introduce new uncertainties to the harmonic performance evaluation. The common practice of day/week evaluation of harmonics may not be feasible for long term planning applications due to the spatial (EV) and temporal (DG) variation in harmonic sources. This paper proposes a probabilistic methodology to evaluate the annual harmonic performance of distribution network, considering the uncertainties involved due to the connection of distributed generation and electric vehicles including their temporal and spatial variation.