Impact of energy storage integration on composite system reliability

Abstract

This work deals with the impact of integration of energy storage and wind energy considering optimal placement on composite system reliability. Benefits of electrical energy include electric energy time shift, frequency regulation and transmission congestion relief. In case energy storage is integrated at non optimal places it will lead to increase in cost, system losses and larger capacity hence having opposite effect to the desired. Sequential Monte Carlo Simulation (MCS) technique is used which simulates chronological history of each component in system which refers to up and down cycles of generators, transmission equipment and fluctuations of load. The main contribution of this paper is to propose a reliability evaluation framework based on MCS and DC Optimal Power Flow (DCOPF) to accurately quantify the reliability impact brought out by optimal placement of wind energy and energy storage. Analytical study on IEEE 24-bus Reliability test system (RTS) has provided valuable insights on power system reliability impact derived from energy storage integration.