王凯奇,张华,沈立群,王悦莹,王苏
WANG Kaiqi,ZHANG Hua,SHEN Liqun,WANG Yueying,WANG Su

• 1:国网浙江德清县供电公司

摘要(Abstract)：

超高压输电线下方的工频磁场计算通常采用二维模型,即将输电线视为平行于地面的无限长直导线。考虑到超高压输电线弧垂较大,近年来有少数学者尝试采用三维模型计算工频磁场,但仅限于比较二维和三维模型的计算精度。针对我国超高压输电线路所经地区气象条件差异很大,且常运行在复杂和较严酷的气象条件下,在考虑线路弧垂变化基础上建立了工频磁场的三维计算模型,分析了线路档距和气象条件对输电线周围工频磁场的影响。结果表明:同一档距下,不同气象条件下工频磁场最大值不同;同一气象条件下,工频磁场随档距不同而不同。
Power frequency magnetic field of UHV transmission lines is usually calculated based on two-dimensional models in which the transmission lines are assumed to be infinite long straight lines. Whereas sag of UHV transmission lines is large, calculation of power frequency magnetic field based on three-dimensional models is adopted by a few scholars; however the computational accuracy comparison between two-dimensional and three-dimensional models is merely focused. As the meteorological conditions of the locations of the UHV transmission lines differ greatly, and the lines frequently operate under complicated and severe environment, three-dimensional models considering the variety of sag are established; then the effect of span and meteorological condition on power frequency magnetic field of UHV transmission lines is analyzed. It is shown that the maximum values of power frequency magnetic field are different with different meteorological conditions; under the same meteorological condition, power frequency magnet field varies as the span change.

关键词(KeyWords)： 超高压输电线路;工频磁场;气象条件;悬链线
EHV transmission line;power frequency magnetic field;meteorological condition;catenary

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王凯奇,张华,沈立群,王悦莹,王苏
WANG Kaiqi,ZHANG Hua,SHEN Liqun,WANG Yueying,WANG Su

DOI: 10.19585/j.zjdl.2016.12.010

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