750kV线路六分裂导线翻转扭绞技术分析及防范治理措施

摘要

Turnover and twisting without galloping were observed on the No.42-43 left-phase 6-bundle conductor of the 750 kV Baiyin-Huanghe single-circuit transmission line,which was the first time to have such a phenomenon in China's750 kV transmission lines. On-line repairing activities were conducted accordingly,and the on -site conditions and the mechanics of conductor turnover and twisting were analyzed.Based on the site work, this paper proposes several precautions and suggestions to prevent conductors from tuming-over and twisting, so as to improve reliability and stability of the grid.%750 kV白银-黄河Ⅰ回线路42～43号档左相六分裂导线未发生舞动而出现翻转扭绞现象,这在国内750 kV线路上尚属首次.给出了采取带电处理的相应修复措施,并进行了导线翻转扭绞的力学、现场条件方面的原因分析,提出避免导线翻转扭绞的几点预防措施与建议,以提高电网运行的稳定性和可靠性.