What is the primary function of a turbine governor?

The primary function of a turbine governor is to control the speed of the turbine. This is achieved by continuously monitoring the turbine's rotational speed and adjusting the flow of steam or water to the turbine to maintain the desired speed, especially during changes in load. By regulating the input energy to the turbine, the governor ensures that the turbine operates within safe limits, preventing overspeed situations that could lead to mechanical failure.

In a power generation context, maintaining a consistent speed is crucial for synchronizing with the electrical grid, where providing a stable frequency and power output is vital. The governor adjusts the fuel or fluid supply in response to changes in demand on the system, contributing directly to efficient and safe turbine operations. While starting the turbine, temperature management, and steam pressure management are important aspects of overall equipment operation, the core responsibility of the turbine governor centers on speed control.