HIGH SPEED COMPENSATION CONTROL METHOD OF VOLTAGE FLUCTUATION

摘要

PROBLEM TO BE SOLVED: To provide a high speed compensation control method of voltage fluctuation which can return quickly fluctuation of a system voltage caused by rapid change of a load current to a set voltage. SOLUTION: A reactive power compensating apparatus 2 is connected with electric power system 1, and feedback-controls the compensating apparatus 2 so as to cancel deviation between a system voltage and the set voltage. Feedforward control which compensates the change part of a load current is added to the feedback control loop, and relieves influence of the fluctuation of the load current. As compared with the conventional method using only the feedback control, coping with the fluctuation of system voltage is enabled more quickly.