文档介绍：第 36 卷第 4 期电网技术 Vol. 36 No. 4 2012 年 4 月 Power System Technology Apr. 2012 文章编号: 1000-3673 ( 2012 ) 04-0022-06 中图分类号: TM 15 文献标志码: A 学科代码: 140·1520 基于上流有限元法的同走廊两回± 800 kV 直流线路地面合成电场计算杨扬 1 ,陆家榆 2 ,杨勇 2 ( 1 .宁波电业局,宁波市 315000 ,浙江省; 2 .中国电力科学研究院,北京市海淀区 100192 ) 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 YANG Yang 1 , LU Jiayu 2, YANG Yong 2 (1. Ningbo Power Supply Bureau, Ningbo 315000, Zhejiang Province, China; 2. China Electric Po wer Research Institute, Haidian District, Beijing 100192, China) ABSTRACT: To increase power transmission capability of unit corridor, the double-circuit ±800 kV DC transmission lines, one of which is from Xiangjiaba to Shanghai and the other of which is from Jinping to Suna n, are arranged on the same corridor. There is not the precedent of engineering application of such a project in the world, so the ground total electric field under the transmission lines is to be researched to meet the demand from both engineering design and environmental protection. An upper stream finite element method (FEM) based method to calculate th e ground total electric field strength under th