Research on Application of a Prefabricated-cabined Energy Storage System in an Island Micro-grid

The energy storage system (ESS) paves way for renewable energy integration and perpetual power supply under contingencies. With excellent flexibility, prefabricated-cabined ESSs are suited for composing micro-grids in remote areas such as islands. This paper presents a prefabricated-cabined ESS example used in an island micro-grid. First, the layout scheme of the ESS is analyzed. Next, the configuration, parameters and control of the ESS are given. Then the paper discusses the debugging of the ESS, including start-up performance, charge/discharge reversal, overload capability, frequency anomaly response and on/off-grid mode reversal. The results show that the ESS is able to operate at predetermined status. This paper aims to deepen understanding of ESS for power grid operators and to provide reference for design and analysis of similar projects.