DEVICE FOR INHIBITING HARMONIC AMPLIFICATION ON THE THIRD WINDING SIDE OF EXTRA-HIGH VOLTAGE /ULTRA-HIGH VOLTAGE TRANSFORMER

摘要

A device for inhibiting harmonic amplification on the third winding side of an extra-high voltage/ ultra-high voltage transformer includes at least two groups of parallel capacitors (101a, 101b). Each group of parallel capacitors comprises three capacitors (Xc1, Xc2) and three reactors (XL1, XL2), wherein after each capacitor is connected in series with a reactor to form three series circuits, the three series circuits are connected in parallel. The capacities of all capacitors in the groups of parallel capacitors are equal. At least one group of parallel capacitors has a first series reactance ratio, while other groups of parallel capacitors have a second series reactance ratio. The said first series reactance ratio is different from the said second series reactance ratio. The device can inhibit harmonic amplification on the third winding side of the extra-high voltage/ ultra-high voltage transformer.