The invention relates to the control field, in particular to an operational control method based on a hybrid energy storage system of an all-vanadium liquid flow redox battery and an electrochemical capacitor. The operational control method based on the hybrid energy storage system of the all-vanadium liquid flow redox battery and the electrochemical capacitor is characterized in that according to the hybrid energy storage system of the all-vanadium liquid flow redox battery and the electrochemical capacitor, the control strategy of the hybrid energy storage system for group control over the all-vanadium liquid flow redox battery is taken into account, the total charging power of the hybrid energy storage system is designed in accordance with wind power plant predication output, the movement section of the electrochemical capacitor is set, so that loss of the all-vanadium liquid flow redox battery is lowered, all units of the all-vanadium liquid flow redox battery system can be regulated and controlled rapidly and reasonably through a ranking method, and the operational control method is suitable for operational control over the energy storage system with optimized wind power integration performance.