特高压输电线路工频电磁场的影响因素分析

Analysis on the Factors Influencing Power Frequency Electromagnetic Field under UHV Transmission Lines

电磁环境是制约特高压建设和发展的一个关键问题。对1 000 kV特高压输电线路的相导线对地高度、相间距离、分裂导线数量、分裂间距、双回路导线相序布置方式和接地避雷线设置等因素对工频电场的影响进行了仿真和分析。并针对不同的影响因素,提出了降低特高压输电线路工频电场强度的应对策略。

Electromagnetic environment is a significant and key problem in the construction and development of UHV transmission system.Several factors,such as the height of phase conductors,wire spacing,number of split conductors,spacing of split conductors,lightning lines and etc,which can influence the power frequency electric field of 1 000 kV UHV transmission lines at ground level,are simulated and analyzed,respectively.And the strategies to decrease electric field strength are also given.