Pumped storage unit rotating speed protection control system and application control method

The invention relates to the technical field of pumped storage unit rotating speed protection control of an electric power system, in particular to a pumped storage unit rotating speed protection control system and an application control method, comprising a governor electrical control cabinet A set host, a governor electrical control cabinet B set host, a monitoring system LCU and a monitoring system LCU rotating speed measuring device; two measurement principles of fluted disc speed measurement and residual voltage speed measurement are adopted to measure the rotating speed of the pumped storage unit, and rotating speed signals, overspeed shutdown signals and rotating speed fault signals measured and processed by a speed regulator electrical control cabinet A set host module, a speed regulator electrical control cabinet B set host module and a monitoring system rotating speed measurement device are judged and processed. Two-out-of-three, one-out-of-two and one-out-of-one control logics of rotating speed pro