| 摘要 |
PROBLEM TO BE SOLVED: To obtain response waveform and attenuation which are intended in the designing of a fluctuation suppression control system and a tide control system, even during the fluctuation suppression control time after the occurrence of variation in ignition angle with the tide control and during the control accompanied with variation of ignition angle. SOLUTION: A variable series capacitor for varying compensation of inductance of a power system is provided with a plurality of fluctuation suppression control means 20, for calculating and outputting variations of target value of ignition angle of a thyristor switch depending on system fluctuation of the power system and axial twisting of a power generator, a tide control means 30 for calculating and outputting the target value of ignition angle, corresponding to a tide deviation from the reference tide of the preset power system transmission line or from a current deviation from the reference current, a gain-determining means 40 for calculating a gain of the fluctuation suppression control means by inputting an output of the tide control means and for outputting a gain to the fluctuation suppression control means and an output adder 41 for adding an output of the tide control means and an output of the fluctuation suppression control means and then providing an output to the ignition angle control means.
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