Demonstration project of power system stabilization with the hybrid battery energy storage system

Abstract

The introduction of renewable energy storage is being promoted as a global warming countermeasure. The increase of naturally fluctuating power supplies such as wind and photovoltaic power generations may influence the stability of the power supply. The introduction of a battery energy storage system is an effective solution to this problem. Hitachi Group developed a hybrid battery energy storage system and began a demonstration project in 2015. The hybrid battery energy storage system was installed to solve problems occurring during an increase of the naturally fluctuating power supply on Izu-Oshima Island, Tokyo, Japan, where the effect of introducing the battery energy storage system could be tested relative easily. This paper describes the development process of an advanced lead-acid battery used for the demonstration project.