Northeast Asia power system interconnection and ESS based balance strategies in South Korea

This paper presents the Northeast Asia (NEA) power system interconnection (PSI) including energy storage system (ESS) and supply-demand balance (SDB) strategies for the South Korean power system. In the NEA interconnection, the large reserve capacities of the interconnected power system for PSI in NEA should be prepared for unexpected transmission line disconnection or connection. To meet this requirement, the future energy management system (EMS) should be flexible to include energy resources and large energy storage systems (ESSs) in the unit dispatch to increase the security in utilizing renewable energy, storage systems, and controllable loads to meet future demands. In this paper, we suggest how to design the ESS-based supply-demand balance strategies for the situation of unexpected disconnection or connection for the NEA PSI in the South Korean power system.