Water Turbine Governor System

The turbine governor model is linked to one or two synchronous generators and determines the shaft mechanical power pmech or torque tm for the generator model.

Water turbine governor system. For the regulation of water below the penstock connec tion at the time of decrease in load on the impulse turbines the governor reduces the water flow from the power nozzle and the surplus water is diverted with the help of auxiliary relief nozzles. The gate servomotor is modeled by a second order system. An early mechanical governor is a servomechanism that comprises a series of gears that use the turbine s speed to drive the flyball and turbine s power to drive the control mechanism. They integrate seamlessly into the smartcontrol distributed control system.

The hydraulic turbine is modeled by the following nonlinear system. The governor output signal manipulates the position of a steam inlet valve or nozzles which in turn regulates the steam flow to the turbine. Units of flow gallons per minute. A hydraulic turbine governor or hydro turbine governor is a system that controls the turbine.

The hydro turbine governor controls the flow of water supplied to the hydro turbine runner in order to control the unit s speed and or load. Based on rockwell automation products smartcontrol turbine speed governors can regulate any type of turbine with any power output. The governor controls the rotational speed of the turbine and or the electrical power load supplied by the turbine s generator. And takes control action for operating the discharge load controlling devices in accordance with the deviation of actual set point from the reference point.

The hydraulic turbine and governor block implements a nonlinear hydraulic turbine model a pid governor system and a servomotor. The most common types of governors for small hydro systems accomplish this by managing the load on the generator. Only one engineering tool is therefore needed helping simplify software management licensing upgrades and training. To illustrate consider a hydro system without a governor.

In old simpow turbine models the turbine are composed of two models one governor input speed output gate one turbine input gate output tm. Governor control system for hydro turbines is basically a feed back control system which senses the speed and power of the generating unit or the water level of the forebay of the hydroelectric installation etc. The mechanical governors were continued to be enhanced in power amplification through the use of gears and the dynamic behavior.