SURGE PROTECTING DEVICE OF HYDRAULIC POWER PLANT

摘要

PURPOSE:To enable to efficiently generate power by interlocking a load increase or decrease signal of the prescribed time output regulator by the same conditions as the discriminating contact while the upward and downward contacting limit signals of a water level discriminator and the water level of a water level varying direction discriminator are rising or falling. CONSTITUTION:When a surge tank 1 is set at the guide water channel side, the water level L if the tank 1 is inputted through a water level converter 2 to a water level discriminator 3 and a water level varying direction discriminator 11, and any of the water level upward and downward limiting contacts 5, 7 and water level rising or falling contacts 13, 15 is outputted. When the both the contacts 5, 13 are simultaneously outputted, a load decrease command from an output regulator 8 is locked to an interlock circuit 10b during the period of T2. When the contacts 7, 15 are simultaneously outputted, a load increase command from an output regulator 8 is interlocked during the period of T2.