Placement and Sizing of Battery Energy Storage System in Photovoltaic-Penetrated Distribution Networks Using Amartya Sen Index

A reasonable configuration of battery energy storage system (BESS) in distribution networks, especially those penetrated by photovoltaic (PV) systems, helps to improve the voltage stability and reduce the configuration and operation cost. In order to solve the sizing and placement problem of BESS in distribution network penetrated by PV systems, this paper proposes an integrated planning strategy for placement and sizing of BESS based on the Amartya Sen index. Inspired by the concept of Amartya Sen poverty index, the Amartya Sen index is adopted to describe the static voltage stability of distribution network in this paper. Considering three aspects of system static voltage stability, network loss, and BESS investment cost, a unified planning model for BESS placement and sizing is constructed with the goal of minimizing the Amartya Sen index and the economic cost. The model is solved based on power flow calculation and multi-objective particle swarm optimization algorithm (MOPSO). The case study conducted in the IEEE 33-node system validates the proposed method, which can effectively improve the static voltage stability of distribution network with reduced investment cost of BESS.