OPERATION CONTROL SYSTEM FOR VARIABLE SPEED PUMPINGUP GENERATOR PLANT

摘要

PURPOSE:To reduce a variation in an effective power of a variable speed pumping-up generator plant when a reactive power control command is applied by simultaneously controlling the phase angle of an exciting voltage by the reactive power control command. CONSTITUTION:When a static head H and an output command P0 are applied, a command value calculator 15 calculates the opening command value and a speed command value of a governor valve 12 by with due regard to an efficiency. A composite unit 27 obtains the difference between the calculated reactive power of a variable speed machine 1 and the reactive power command value Q0, and a converter 24 converts it into a voltage. The value obtained by subtracting the value from a voltage set value V0 is combined by a composite unit 25 with the voltage of the machine 1. A secondary winding phase angle calculator 16 calculates a phase angle from the effective power and the output command P0. A setter 17 sets a secondary winding exciting amount by the output of the calculator 16 and the output of a voltage regulator 18.