特高压直流线路地面合成场强的计算  

Calculation of Ground Total Electric Field of HVDC Transmission Line

作　　者：陈鹏[1] 张毅[1] CHEN Peng;ZHANG Yi(Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013, China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250013

出　　处：《山东电力技术》2018年第2期18-21,共4页Shandong Electric Power

摘　　要：准东—华东±1 100 k V特高压直流线路为世界第一条±1 100 k V直流线路,确定合理的对地距离对线路具有重大意义。本文研究的"双极导线—大地"的计算模型边界条件简单、几何外形规则,借鉴数学物理方程求解思路,采用MATLAB编制有限差分法计算程序,分析了气候及海拔对地面合成场强影响,确定导线对地距离的决定因素,提出了不同地区的对地距离取值,为工程设计提供参考。The Zhundong-Huadong ±1 100 k V HVDC transmission line is the first ±1 100 k V HVDC line in the world.Determining reasonable clearance to ground is of great significance.The bipolar wire and earth model studied in this paper,has simple boundary conditions and clear geometric shapes.In light of mathematical physics equation solution,finite difference method compiled by MATLAB is used,and the effects of climate and altitude on the total field are analyzed,finally the values of clearance to ground in different regions are calculated,which can provide a reference for engineering design.

关 键 词：±1100kV 有限差分法 地面合成场强 对地距离 

分 类 号：TM937.1[电气工程—电力电子与电力传动] TM723