Reliability impacts of the dynamic thermal rating and battery energy storage systems on wind-integrated power networks

Abstract

Abstract Increasing the penetration of wind energy in power networks is one of the ways to reduce industrial carbon footprint. However, the intermittency of wind speed inhibits the widespread installation of wind farms and hinders the share of wind energy. A way to tackle this problem is by installing a battery energy storage system (BESS) to store excess wind energy for future usage, such as when wind speed is low. The dynamic thermal rating (DTR) system is also beneficial in further enabling wind energy to be utilised and distributed to consumers by alleviating the congestion of power networks. However, despite the benefits of these technologies, the modelling of their joint reliability impacts on power networks has never been performed. This study presents for the first time the reliability modelling of the two technologies mentioned above. The models are realistic because they are based on actual weather conditions and the operating scenarios of power systems. Results show that both BESS and DTR systems can lower demand losses and increase the saved, supported and delivered wind energy depending on the settings of the two systems. Three new indices are introduced to measure wind energy-related performance.