11th IEEE PES Innovative Smart Grid Technologies Europe, ISGT Europe 2021, Espoo, Finland, 18 - 21 October 2021
© 2021 IEEE.This paper presents a novel method to optimally place phasor measurement units (PMUs) and Photovoltaic power nowcasting devices (PNDs) in active distribution systems (ADS) with high PV penetration. The paper solves two placement problems for active distribution systems, i.e., achieving observability and desired measurement redundancy and probabilistically ensuring that the ADS will remain observable despite topological changes. The Genetic Algorithm (GA) is implemented to solve both non-linear optimization problems.