HYDRAULIC POWER PLANT

摘要

PROBLEM TO BE SOLVED: To provide a hydraulic power plant capable of detecting the shift to single operation and automatically switching the governor gain at the time of the shift to single operation. SOLUTION: A governor is provided with an integration operating part 5a for cooperative operating mode and an integration operating part 5b for single operating mode and contacts 19a and 19b are switched by a shift-to single operation sensor 20. The shift-to single operation sensor 20 sets the monitoring period from the monitoring signal of either each response signals ε of respective parts of the governor or rotating speed signal N and operates the attenuation degree of the monitoring signal during that period and when the attenuation degree is worse than a prescribed one, it is judged that the operation has been shifted to be in the shift to single operating state.