TIAN Qing, WANG Xiao-xi. Influence of Converter Transformer D-bridge Zero Sequence Circulating Current on Valve Short Circuit Protection[J]. High voltageapparatus, 2008, 44(6): 509-512+515.
TIAN Qing, WANG Xiao-xi. Influence of Converter Transformer D-bridge Zero Sequence Circulating Current on Valve Short Circuit Protection[J]. High voltageapparatus, 2008, 44(6): 509-512+515.DOI:
This paper studies the influence of converter transformer D-bridge zero sequence circulating current on valve short circuit protection.A case study indicates the fault trips of D-bridge differential protection due to CT transient saturation in Gezhouba converter station leads to breakdown of equipments for two times
according to the criterion of valve short circuit protection.Corresponding methods are presented for solving this problem.