Error propagation in the state estimation and prediction of distribution grids with a limited database

Reliable state estimation in distribution networks is essential for safe and efficient operation. A substantial share of the literature on low-voltage state estimation (LVSE) assumes that accurate estimation of the LV network state requires either aggregated power measurements at the distribution transformer or feeder-level measurements. This paper investigates whether adequate LVSE accuracy is possible without transformer and feeder measurements, provided that upstream medium-voltage state estimation (MVSE) results are available.