Governor Simulation in Hydro plant

[Danard]

Hi everyone,

I'm now working on the simulation of the governor control in a Hydro plant. Does anyone work in this area before? Are you using the IEEE model(1992) to simulate the hydraulic system?

I have doubt at one of the equations used by IEEE:

Power=AtHQ-DGdw/dt

where At=turbine gain, H=net head, Q=flow rate, D=damping factor, G=gate opening, dw/dt=derivative of turbine speed


How can we determine the Damping factor D?

According to Kundur, the recommended value for D=0.5 (for Francis turbine).

Anyone know how Kundur actually come out with this value?

Thanks,
Danard

 

[jbartos]

Suggestion: Reference for fast valving:
P. Kundur and J.P. Bayne "A study of early valve actuation using detailed prime mover and power system simulation," IEEE Transaction on Power Apparatus and Systems, 1275-1287, July/August, 1975

 

[jbartos]

More References:
1. IEEE Committee, Dynamic Models for steam and hydro turbines in power systems studies. IEEE Transactions on Power Apparatus and Systems, 1904-1915, November/December, 1973
2. M.E. Leum, The development and field experience of a transistor electric governor for hydro turbines. IEEE Transactions on Apparatus and Systems, 393-402, April, 1966
3. D.G. Ramey and J.W. Skooglund, Detailed hydrogovernor representation for systems stability studies. IEEE Transactions on Power Apparatus and Systems, 106-112, January, 1970
Also, visit

http://www.kestrelpower.com/pdf_docs/TestingModeling_of_generator_controls.pdf

for Kundur papers

 

[Danard]

Thanks for your reply, jbartos.

These papers don't really mention anything regarding the damping factor D that I'm talking about here.

As far as I'm aware, this term first appeared in 1992 IEEE nonlinear model and everybody is using it since that time. However, no one has actually explained how the value is determined. Kind of weird to me......

 

[jbartos]

Suggestion: The following references are more pertinent to the Turbine Damping Factor D:
1. P.W. Agnew, "The Governing of Francis Turbines," Water Power, pp. 119-127, April 1974
2. Working Group on Prime Mover and Energy Supply Models for System Dynamic Performance Studies "Hydraulic Turbine and Turbine Control Models for System Dynamic Studies," IEEE Transactions on Power Systems, Volume 7, Number 1, February 1992, pages 167
3. J.M. Undrill and J.L. Woodward "Nonlinear Hydro Governing Model and Improvement Calculation for Determining Temporary Droop," IEEE Transaction, Vol. PAS-86, No. 4, pp. 443-453, April 1967.

Reference 2 indicates that "There is also a speed deviation damping effect (implying D) which is a function of gate opening." See Reference 3.