Hierarchical BESS management for electric power self-supply ratio improvement and power flow reduction in residential town

摘要

This paper proposes a hierarchical battery energy storage system (BESS) management in a residential town. The proposed management improves an electric power self-supply ratio (EPSR) with charge/discharge operation of BESSs and a time shift operation of heat-pump water heaters installed in the households, and reduces power flow amount by hierarchically BESSs operation. The proposed management is verified in the residential town, and the results of numerical simulations clearly represent that the proposed management could improve EPSR through a year and drastically reduce the total power flow amount in the residential town compared with conventional self-operation.