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I'm afraid the math is beyond me. How would you calculate the bp and s terms based on the values available to the PLC program?

Thank you, this is a very clear and useful post. Can you specify what the bp and s terms are in the equation?

I appreciate your feedback, perhaps you could explain how the governor logic should work in terms of what my PLC can detect. The PLC "knows" the following information: SPrpm= Desired Generator Speed in RPM entered by operator PVrpm= Actual Generator Speed in RPM read from speed...

I am picturing a simple PID block with inputs of Speed Setpoint (SP) and actual Speed Present Value (PV). The output from this block represents a gate position setpoint which is cascaded to an inner loop which positions the gate. I would calculate the Droop Adjustment as (%Droop) x (%Gate) so...

I like to take this question a step further and ask how you would actually program the logic for an electro-hydraulic governor which is controlled by a PLC. Basically the PLC "knows" generator frequency & output, turbine speed, final control element position (in this case a hydro...