Turbine governor is important component of turbine, and is the key part to realize the adjustment of turbine.In order to ensure the normal operation of the turbine, and guarantee the normal and stable operation of the hydropower station, turbine governor generally has two functions: grid-connected function and adjustment function. Among them, the grid-connected function is the important condition to realize the automatic adjustment of operation state of turbine. During the normal operation of the turbine, the staff issues instructions to computer for adjusting the operation status of the turbine, and then the grid connection function of turbine governor can automatically adjust the operation status of the turbine according to the relevant instructions, which is conducive to ensuring the stable operation of turbine. The adjustment function is the main function of turbine governor, and it also reflect the function of  value of turbine governor, its function is to adjust the running speed, water discharge and power etc. of turbine. That is, during the operation of  turbine, the staff can use the adjustment function of governor to adjust the speed, power, water discharge, etc. of  turbine to the appropriate values according to the needs, so as to ensure the safety and stability of  turbine running, and then provide the guarantee for the safe and stable operation of hydropower station.