Title :
Influence of DC Bias to Transformer and Its Suppression Measures
Author :
Du Huazhu ; Wen Xishan
Author_Institution :
Sch. of Electr. Eng., Wuhan Univ., Wuhan, China
Abstract :
Direct current through directly-grounded neutrals of nearby AC transformers may induce DC biases of transformers when high voltage direct current transmission (HVDC) system operates on ground return mode, thus producing negative impact on the AC system. This paper introduced the influence of DC bias to transformer and its research efforts. The suppression measures of DC bias were analyzed .
Keywords :
HVDC power transmission; power transformers; AC transformer; DC bias; directly-grounded neutral; ground return mode; high voltage direct current transmission system; suppression measure; Circuit faults; Grounding; Harmonic analysis; Monitoring; Phase transformers; Power transformer insulation;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6253-7
DOI :
10.1109/APPEEC.2011.5748971
