A New Suppression Device of Transformer DC Magnetic Biasing

doi:10.3969/j.issn.1000－7229.2013.11.022

Abstract

Abstract:

HVDC power transmission system that works in monopolar operation will generate neutral current causing DC magnetic biasing of transformer, which will lead to the adverse reaction of transformer, such as local overheating, vibration increase and noise increase. The influence of DC magnetic biasing on transformer and the main suppression method of DC magnetic bias are analyzed. The new device topology of supressing transformer DC magnetic has been proposed, based on the principle of DC electric potential compensation. Through the fault simulation, the parameter selection for devices has been implemented，which could serve as references to relevant projects.

Key words: DC power transmission, transformer, DC magnetic biasing, electric potential compensation, simulation

FAN Yongqiang, YIN Zhongdong，LI Heming. A New Suppression Device of Transformer DC Magnetic Biasing[J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(11): 110-113.

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