Research on the Working Mode of Combined Pumped Storage System

Under the guidance of the pursuit of carbon peak and carbon neutrality, pumped storage technology is ushering in its golden development period. This paper presents a scheme of grid-type combined pumped storage system to cooperate with wind power directly supplying energy consuming enterprises. Wind power directly supplies power to energy consuming enterprises, and supports grid-type combined pumped storage system with constant speed and variable speed. Through this system, system frequency and voltage stability can be maintained, power supply and power balance can be ensured, and system power fluctuations can be stabilized. Under different working modes, the frequency and voltage stability can be ensured by the reasonable division of labor and the transition of initiative.