On-line load sensitivity identification in LV distribution grids

This letter proposes a new on-line load sensitivity identification by means of power electronics-based devices. Applying a voltage and frequency perturbation and measuring the consumed power of the loads, the proposed method computes in real time the voltage and frequency dependency of the load active and reactive power. In this work a Smart Transformer application has been proposed, but the method is general for any power electronics converter able to influence dynamically the voltage and frequency in the grid.