Sizing Transmission-Scale Battery Energy Storage System with Dynamic Thermal Line Rating

Incorporating battery energy storage system together with dynamic thermal line rating has the potential to defer the construction of new transmission lines in multibus systems. This paper presents a linear programming methodology for calculating the optimal battery energy storage system capacity sizing together with the power rating for a multibus system that takes into account battery energy storage system degradation, transmission line outages, and dynamic thermal line rating of transmission facilities. The battery energy storage system degradation equations are linearized using a multilayer perceptron. The proposed method is tested on the IEEE 24-bus reliability test system using the Merseyside weather data from the British Atmospheric Data Center. The results show that this methodology produces an accurate estimate of BESS capacity values.