| 摘要 |
PURPOSE:To attain the cooperative operation control with a quip response by comparing the outputs of control circuits with each other in a reactive power compensating device (SVC) so that the same quantity of reactive power is generated, integrating a difference by an integrator, adding the output of the integrator to the input of an arithmetic circuit to be followed in the SVC to always compensate reactive power. CONSTITUTION:A difference signal to be the output of an adder 88 for comparing a reactive power supply signals from limiter circuits 85, 95 with each other is added to the input of the limiter circuit 85 by an adder 82 through an integrating circuit 89. In this case, an SVC 1 is controlled so as to follow up an SVC 2, and in the case of allowing the SVC 2 to follow up the SVC 1, an output signal from the circuit 89 may be added to an adder 92. Thus, cooperative operation between the SVC 1 and SVC 2 can be quickly attained by setting up the time constant of the integrating circuit 89 to approximately the same as the integration constants of proportional integrators 84, 94. |
