A Distributed Robust Voltage Control Framework for Active Distribution Systems

Voltage fluctuations in active distribution systems (ADS) have increased with the high penetration of uncertain energy resources, making unified governance more challenging. This paper proposes a novel distributed robust voltage control (DRVC) method for ADS based on coordinated clustering of photovoltaic and energy storage systems, aiming to aggregate decentralized resources into interrelated clusters to achieve distributed voltage regulation. Firstly, an improved Louvain algorithm based clustering method for ADS is introduced, further incorporating the voltage sensitivity and regulation capability of generators into the modularized function. After that, a local robust voltage regulation model for each cluster is constructed, and the global multi-objective optimization function is solved through a distributed robust solution method for integrating intelligent optimization to further enhance the robustness. Case studies and results demonstrate the performance of the proposed voltage control framework in resisting uncertainties by contrast with existing models.