This base model implements a control diagram wich can be specialized in governors for hydraulic turbines.
The upper part of the diagram implements the frequency primary regulation and the dynamic of the gates servomotor; the lower part completes the turbine model.
The gates travel over a range of 1.0 per unit from fully closed to fully opened. The gates are at a position greater than zero at zero power and, normally, less than 1.0 when power is 1.0 pu. Gmax and Gmin are operating limits.
The caracteristic function of the turbine is omitted, because it depends on the turbine type (Pelton-Francis-Kaplan). Said characteristic shall connect the deadBandDb2 output to the input u1 of the div1 block, and shall be implemented in the specialized class.
In the specialized class can be also implemented additional inputs, if needed.
The caracteristic function describes the relationship of flow through the turbine to stroke of the gate actuating servomotor.
This curve is proportional to turbine power, with the constant of proportionality being a function of available head. This constant must be specified by the turbine gain At.
The typical value of At is slightly greater than unity while the typical range of Qnl is 0 - 0.15.
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.PowerGrids.Electrical.Controls.TurbineGovernors.BaseClasses.GovHydro4Base