| 摘要 |
PURPOSE:To make waveforms smooth even when frequencies, etc., abruptly change so as to always actuate a power system simulator synchronously with an analog device by providing a frequency correcting arithmetic section which corrects the current frequency based on the variation of a phase angle, current frequency, and calculating time interval. CONSTITUTION:When the current frequency outputted from the simulating arithmetic section 2 of a computer 9 is deviated from the frequency of one calculating interval before, a frequency correcting arithmetic section 8 finds the current phase angle based on an assumption that no deviation occurs in the frequency from the phase angle of one calculating time interval before. In addition, the section 8 finds the phase angle variation from the found phase angle and the current phase angle outputted from the section 2 and corrects the current frequency based on the phase angle variation, current frequency, and calculating time interval. Therefore, even when frequencies or phase angles abruptly change, waveforms become smooth and this power system simulator can be actuated synchronously with an analog device. |
