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On-line monitoring of dissolved gas in oil is one of effective methods of condition assessment of transformers. Compared with the power transformer, valve side windings of converter transformer withstand pulsating voltage during the converter process. This paper presents gas generation properties of oil insulation under pulsating voltages, which are different from those under individual AC voltage...
With the improvement of voltage level of HVDC transmission, the insulation of converter transformer has become increasingly prominent. Different from the general power transformer, valve side windings on converter transformer withstand pulsating voltages, which makes insulation problem get more serious. In this paper, experiments were carried out under pulsating voltage over a wide range of the pulsating...
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