| 摘要 |
PURPOSE:To efficiently compensate for the instantaneous voltage fluctuation of each phase and three-phase imbalance voltage fluctuation caused by the three-phase imbalance voltage of receiving power and the fluctuation in reactive power consumption of a load. CONSTITUTION:In the DELTAV detection control for a thyristor control reactor(TCR) where a bias voltage having a waiting operation point at about half of the maximum output of the TCR is added to the voltage fluctuation DELTAV of a system detected for each phase, the bias voltage is shifted by the imbalance component of each phase detected by comparing each phase voltage VU, VV, VW detected as a DC voltage with a three-phase average voltage V3 represented as a DC voltage thus suppressing the three-phase imbalance. |
