Electric power controlling system for minimizing electrical fee through optimal State of Charge control based on hierarchical Energy Storage System

摘要

The present invention relates to a power control system, a power provider that supplies power to a power consumer and charges an electricity fee according to the power consumer''s electricity usage, a main ESS that stores the power supplied from the power provider, a shiftable device, and a shift Impossible devices, PV (Photovoltaics) that converts sunlight into electrical energy to generate power, and control of the main ESS and sub ESS and sub ESS for supplying the power received from the PV to the shiftable device and the non-shiftable device Maintaining an optimal SoC of a hierarchical ESS consisting of one or more sub ESS modules and the main ESS and each sub ESS comprising a system and forming a hierarchical structure with the main ESS, and a main ESS control system for controlling the power supplier, the main ESS, and the one or more sub-ESS modules to minimize electricity charges. According to the present invention, there is an effect that the optimal SoC of the hierarchical ESS can be maintained by charging and discharging the main ESS and the sub ESS to each other using the hierarchical ESS (main ESS, sub ESS).