The hydroelectric turbine governing systems as described in [8] looks similar to the
steam turbine control systems. But the parameters used for hydroelectric are very
different from those used for a steam turbine governor. The rotor speed of the
synchronous machine coupled to a hydroelectric turbine is very slow. The synchronous
machine in a pumping station will act both as a generator and as a motor and hence theturbine control system for such a machine is more sophisticated and requires separate
parameters for generator versus motor. Figure 2.11 shows IEEE TGOV1 which is one
type of steam turbine governors.