Automatic start-stop control method for pumped storage unit

The invention provides a pumped storage unit automatic start-stop control method considering the safety of a pumped storage unit and the safety of a power grid, and the method comprises the steps: building a pumped storage unit control model in provincial dispatching AGC, designing a control state locking logic and a control target coding method for guaranteeing the control safety of the pumped storage unit, and enabling a control target coding format to be AABBCDDD; wherein AA represents a pumped storage power plant code, and 99 pumped storage power plants are supported at most from 01; bB represents the internal unit code of the pumped storage power plant, from 01, at most 99 pumped storage units are supported in one pumped storage power plant, C represents the working condition conversion mode, and DDD represents the control target value from 000 to 999. Under the normal condition of the power grid, a control target is automatically issued after multiple verification is passed according to the power genera