基于上流有限元法的同走廊两回±800kV直流线路地面合成电场计算Calculation of Total Electric Field at the Ground Level Under Double-Circuit ±800 kV DC Transmission Lines Arranged on Same Corridor With Upstream FEM Method
杨扬;陆家榆;杨勇;
摘要(Abstract):
为提高单位走廊输电能力,我国向家坝—上海与锦屏—苏南两回±800 kV直流线路采用同走廊架设。两回±800 kV直流线路同走廊架设在世界上无工程应用先例,需要对其地面合成电场进行研究,以满足工程设计和环境保护需求。文中提出了一种基于上流有限元法的同走廊两回直流线路地面合成电场计算方法,模拟试验线段试验结果验证了计算方法的有效性。计算和试验结果都表明:不同的极导线布置方案不会显著影响地面最大合成电场的大小,但会影响其分布位置;同走廊两回直流线路地面最大合成电场的绝对值与单回直流线路的差别不大。最后对向家坝—上海与锦屏—苏南同走廊两回±800 kV直流线路的地面合成电场进行计算分析。
关键词(KeyWords): 特高压直流输电;同走廊;两回直流线路;上流有限元;模拟试验;合成场强
基金项目(Foundation): 国家自然科学基金项目(50907062,51037001)~~
作者(Author): 杨扬;陆家榆;杨勇;
Email:
DOI: 10.13335/j.1000-3673.pst.2012.04.026
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