重力储能系统运行分为充放电两种工况，其能量转化过程如图所示。充电工况下，重力储能系统从新能源侧获取电能，电机工作于电动工况，转子旋转带动质量块从低势能位向高势能位移动，电能转化为重力势能。放电工况下，质量块从高势能位释放，向低势能位移动，反拖电机转子发电，重力势能转化为电能回馈至电网。

The operation of the gravity energy storage system is divided into two working conditions: charging and discharging, and the energy conversion process is shown in the figure. Under charging conditions, the gravity energy storage system obtains electrical energy from the new energy side. The motor operates under electric conditions, and the rotor rotates to drive the mass block to move from a low potential energy level to a high potential energy level, converting electrical energy into gravitational potential energy. Under discharge conditions, the mass block is released from the high potential energy level and moves towards the low potential energy level. The reverse drag motor rotor generates electricity, and the gravitational potential energy is converted into electrical energy and fed back to the grid.