In recent years, the application of BESS in power system has been increasing. If lithium-ion batteries are used, the greater the number of batteries, the greater the energy density, which can increase safety risks. Consi. Pgrid(1:T) Power of BESS for grid frequency regulation from time step 1 to TPbatti(1:T). New energy is intermittent and random, and at present, the vast majority of intermittent power supplies do not show inertia to the power grid, which will increase the pressure of p. 2.1. SOC error and battery calibrationThe rapid and accurate estimation of the state of charge (SOC) of lithium battery is one of the key technologies of the battery management sys. 3.1. Battery charge/discharge sequencing criteriaAccording to the SOC, SOH and SOS of the battery, make the following table containing the re. Qinghai Golmud Luneng New Energy Co., Ltd. has applied the unified dispatching and energy management system of BESS developed by China Electric Power Research Institut.