Gravity energy storage system modeling method considering electromechanical coupling vibration

The invention discloses a gravity energy storage system modeling method considering electromechanical coupling vibration, and relates to the technical field of gravity energy storage, and the method comprises the steps: building a variable-length steel wire rope dynamic model, and building a motor torque pulsation model; the motor output torque under different gravity energy storage system operation states is used as the power source input of the steel wire rope-weight lifting system, and the motor output torque oscillation is used as the excitation source of the steel wire rope; calculating vibration characteristics and tension oscillation of the variable-length steel wire rope by taking the motor output angular velocity as a boundary condition of the steel wire rope model, and establishing an electromechanical coupling vibration model of the variable-length steel wire rope-weight lifting system; steel wire rope tension oscillation serves as motor input external mechanical load torque at the same time, and a