The Coordination of Hydraulic Turbine Governors for Power System Operation

The methods of adjustment and operation of the governors of hydraulic turbine generating units, in attempting to meet conflicting requirements, have occasionally developed over the past decade in directions different than would be suggested by the rapidly developing science of control. The most prominent factors contributing to the divergence have been the obscuring of proper speed control for individual units by interconnection into large systems, and the compromise of speed control characteristics for the superposition of t e-line controls. In the hydrodominated systems of the Northwest, frequency control has been understandably less efficient than in steam dominated systems.