According to the practice on gezhouba to shanghai hvdc transmission project and in consideration of condition on three gorges hvdc project , some suggestions on protection of overvoltage and insulation coordination for outer insulation , against pollution - wet , dc neutral bus over - voltage and dc & ac filter are technically presented . it may be a reference in design of three gorges converter station 根据葛南直流工程的经验并结合三峡工程的情况,在换流站的外绝缘、直流耐污湿技术、直流中性母线过电压防护、交直流滤波器的过电压防护等方面提出了过电压和绝缘配合的技术要求,供设计参考。
The advantage and disadvantage of two kinds of principle of the external insulation configuration using contamination tolerance voltage and the rate of distance of voltage creepage is analyzed . the principles and measures of external insulation configuration of power transformation device is put forward at the present time . the technical measure against contamination flashover of power transmission and transformation device in electric network in south of hebei province is studied and determined 分析了利用污秽耐受电压或爬电比距选择外绝缘配置这两种原则的优势和存在的问题,提出了现阶段输变电设备外绝缘配置原则和措施,研究制定了河北南网输变电设备防污闪技术措施。