500kV超高压输电线下工频电场分析

为了分析超高压输电线路在不同情况下的工频电场分布规律,探讨减小其工频电场分布的措施,采用有限元法,利用ANSYS软件建立了500kV超高压输电线的二维仿真模型。计算了在不同距地高度、相间距离、分列导线根数、分裂导线的间距、单回线路的布线形式和双回线路的相序分配情况下,输电线下地面1.5 m处的电场分布。通过对计算结果的分析比较,总结了在不同情况下线下场强的分布规律,提出了一些减少线下场强的建议。

Analysis of Power Frequency by Extra High Voltage Electric Field Generated Transmission Line

Aimed at the distribution regularities of power frequency electric fieht produced by extra high-vnltage transmission lines in different situations, the nteasures to reduce the power fi＇equency distrihution of electric field are studied. This paper uses finile element method to hniht two-dimensional simulation model of 500kV high vohage transmission lines in ANSYS software,. The electric field distrihution 1.5 meters from the ground under the transmission line is calculated at diffirent height from the ground, and phase distance, and spacing of division wire, and numbers of splitting wire, and the routing form of single-line wiring and phase sequence distribution of double-line. Through analysis and comparison of results, distrihntinn regularities under different situations arc summarized and some proposals and scheme are presented to reduce the electric fieht below transmission line.