Mapping grid impedance effect by aggregated loads in LV grids

With converters taking an increasing part in the grid, the impact of supraharmonic disturbances increases. The impact of these disturbances is, to a large extent, dependant on the grid impedance at the place and frequency of the disturbance. The grid impedance, in turn, is dependent on both the grid topology and the surrounding loads. This paper shows that the impedance of an aggregated distant load impacts the grid impedance in distinct ways for different frequencies. Additionally, the paper shows that the length of the cables closest to the measurement site have a larger impact on the maximum possible impedance than the cables closer to the variable load.