Frequency Control with Flexible Demand and Storages to Support Large Renewable Energy Generation

Abstract

An increase in the installed capacity of renewable energy sources in power system may lead to frequency deviation problems due to their intermittent nature and subsequent mismatch between generation and demand. Therefore, new components should be used to provide frequency regulation, and thus assure stable frequency. One of the solutions is the integration of energy storage systems and flexible loads. This paper investigates the dynamic influence and performance of thermostatically controlled electric water heaters and battery energy storage systems for frequency regulation in an interconnected two-area power system with high penetration of variable renewable energy generation.