ENERGY STORAGE SYSTEM, POWER CONTROL DEVICE AND POWER CONTROL METHOD FOR ENERGY COST REDUCTION

摘要

The present embodiment relates to an energy storage system, a power control device, and a power control method capable of reducing energy costs. An aspect of the present embodiment is an energy storage system connected to a power grid that supplies power to a load, comprising: an energy storage device that stores energy supplied from the power grid; A power conversion device transferring power between the power grid and the energy storage device; And a power control device for controlling power transfer between the power grid and the energy storage device; wherein the power control device generates a prediction profile for predicting power usage of the load, and the prediction profile and the energy storage device A target profile is set based on the capacity of and the charge/discharge of the energy storage device is controlled according to a charge/discharge profile determined based on a difference between the predicted profile and the target profile.