OPERATION CONTROL SYSTEM FOR VARIABLE SPEED PUMPINGUP GENERATOR PLANT

摘要

PURPOSE:To stably control a variable speed pumping-up generator plant to a target value at AFC operation time by controlling the valve opening of a governor by the difference between the target value of power and the actual power value. CONSTITUTION:When a static head H and an output command P0 are applied, a command value calculator 15 calculates the opening command value Hv and a speed command value N0 of a governor valve 13 with due regard to an efficiency. A comparator 26 calculates the difference between the output from an effective power leading-out unit 21 and the value P0, and a composite unit 32 adds the output to the value Hv of the valve 13. A secondary winding phase angle calculator 16 calculates the phase angle of the secondary winding by the value N0 and a speed N obtained from a tachometer generator 11 and applies it to a setter 17 for setting the exciting amount of a secondary circuit.