CONTROL SYSTEM AND METHOD FOR USING ENERGY STORAGE IN CONTRACT CAPACITY USERS

A control method for using a battery for energy storage for contract capacity users includes, turning on a demand controller, starting output power calculation and battery power supply control, measuring a power consumption time interval set by a utility company as a cycle time, obtaining a power value that a load can use every minute, measuring and calculating an output power of a utility power output once a minute, and accumulating the output power according to time and comparing it with an accumulative usable contract capacity. When accumulative output power of the utility power output is greater than accumulative usable contract capacity and voltage of the battery is higher than a preset lower limit, start the battery to supply power to the load and when the voltage of the battery is lower than the preset lower limit, the battery will not supply power to the load.