What is the function of a turbine governor?

The function of a turbine governor is to adjust steam flow and control turbine speed. In power systems, the governor plays a critical role in maintaining the desired operational parameters of the turbine. As the load on the turbine changes, the governor automatically adjusts the amount of steam entering the turbine, ensuring that the speed remains constant despite variations in load demand.

This is essential because a turbine must operate at a specific speed for optimal efficiency and performance. If the turbine speed were to increase or decrease excessively, it could lead to mechanical failure or inefficient operation. By modulating the steam flow, the governor provides this essential stability and responsiveness, effectively balancing the energy input from the steam against the mechanical power being extracted by the generator or other mechanical devices linked to the turbine.