Planning Framework for BESSs in Microgrids (MGs) Using Linearized AC Power Flow Approach

Abstract

Due to the benefits of renewable energy sources (RESs), the prevalence of Microgrids (MGs) has increased in the distribution systems. The intermittent and unpredictable nature of RESs causes some challenges for distribution system and MGs. One of the most effective solutions for the mitigation of these challenges is by using battery energy storage systems (BESSs). Despite the many benefits of BESSs, due to the high investment cost of BESSs, a planning approach should be conducted to obtain the optimal location, size, and type of BESSs in the network. For this purpose, this paper proposes a novel planning framework for BESSs to improve the MG operation economically. In this paper, the linearized AC power flow was utilized to mitigate optimization error and computational efforts of DC and AC power flow. Finally, in order to evaluate the applicability of proposed BESS planning methodology, it is implemented on the modified IEEE 33-bus distribution network test system and its anticipated applicability is well verified.