Energy-storage control system

An energy-storage control system comprises a first charging and discharging control unit, a second charging and discharging control unit, a detecting unit and an energy-storage control unit, wherein the first charging and discharging control unit connected with a power grid interface unit and a battery unit is used for controlling charging and discharging of the battery unit, the second charging and discharging control unit connected with the power grid interface unit and a super-capacitor unit is used for controlling charging and discharging of the super-capacitor unit, the detecting unit is used for detecting power grid voltage or power and energy stored by the battery unit and the super-capacitor unit in real time, and the energy-storage control unit is used for joint control for the battery unit and the super-capacitor unit by the aid of the power grid interface unit, the first charging and discharging control unit, the second charging and discharging control unit according to the power grid voltage or power and the energy stored by the battery unit and the super-capacitor unit detected by the detecting unit when the power grid voltage or power is out of upper and lower limits. The energy-storage control system realizes preferential control of charging and discharging of super-capacitor unit, can be applied to peak shaving and energy storage, can also solve the problem of out-of-limit abnormal fluctuation of the power grid voltage or power, and thoroughly prolongs the service life of an energy-storage system battery.