Expected deviations in grid state identification through practical measurements using a smart grid interface module

One of the most important requirements for a smart grid is to know the electrical operation point, commonly referred to as the grid state. Relying purely on measurements to identify the grid state is very expensive and it is only feasible for high-voltage (HV) grids. Especially in low-voltage (LV) grids, this approach becomes economically unviable. A grid state identification, which calculates the grid state based on a selection of a few measurements and a grid model, is needed. In this paper, the effect of the number of measurements on the grid state deviation in LV grids is examined in a simulation environment. Creating a bridge between theory and practical application, this paper highlights the practical implications and expected deviations of the grid state identification using a Smart Grid Interface Module (SGIM) from BeEnergy SG GmbH in the SimBench LV grids. The findings presented herein are based on the outcomes of the mentioned simulation environment, providing insights into its effectiveness.