500kV麻黄线电磁环境影响计算分析

电子机电论文编号:JD612  论文字数:25483,页数:48

目  录
摘要  I
Abstract  II
1 绪论  1
1.1 我国高压输变电工程的发展   1
1.2电磁环境问题  2
1.3 国内外现状及水平  5
1.3开展的研究工作  5
2 输变电工程的工频电场  6
2.1高压输变电工程的工频电场的限值  6
2.2工频电场计算方法比较  9
2.3工频电场的计算  12
3 输电线路的工频磁场  16
3.1 高压输电线下方空间工频磁场的理论计算  16
3.2 工频磁场二维计算方法  17
3.3工频磁场的三维计算方法  18
4 无线电干扰及可听噪声  22
4.1架空输电线路的电晕现象  22
4.2 架空输电线路的无线电干扰  24
4.3 可听噪声  26
5 输电线路电磁环境的计算及其仿真   30
5.1 输电线路的工程概况  30
5.2 工程计算  32
5.3 输电线路电磁环境仿真  36
6 结论  42
参考文献  43
致谢  45

摘  要

随着全球经济的不断发展和民众环境意识的增强，输电工程的电磁环境问题越来越受到人们的关注。同时，电压等级发展到了特高压阶段，电磁环境已经成为决定输电线路结构、影响建设费用等的重要因素。本文就500kV麻黄线电磁环境的影响进行分析计算。
输电线路的电磁环境参数主要包括工频电场、工频磁场、无线电干扰和可听噪声四个方面。本文利用加拿大SES公司出品的CDEGS软件包对交流超高压以及特高压输电线路就这四个方面进行了详细的仿真研究。针对每个电磁环境参数，分别介绍了其理论计算方法、主要影响因素、降低措施以及相关标准，以保证输电线路的电磁环境影响满足规程要求。

关键词：高压输电线路；工频电磁场；电晕；无电线干扰；可听噪声

Abstract

With the global economic development and people's increasing environ- ment awareness, the electromagnetic environmental problem caused by power transmission is paid more and more attention. At the same time, as the voltage rating turn into UHV level, electromagnetic environment has become the critical factor which determines the power tran smission line's structure and the constructing cost. This article on the 500kV line Mahuang electro- magnetic analysis of the environmental impact of computing.
The electromagnetic parameter of power transmission include: power frequencyelectrical field power frequency magnetic field, radio inference (RI) and audible noise (AN). With Canadian SES's CDEGS software, this paper makes detail simulation research on the four electromagnetic parameter of AC EHVand UHV transmission line. This paper introduces theoretical calculation method, main affectedfactor, mitigation technology and  their  standards for each electromagnetic environment parameter, transmission lines to ensure that the impact of the electromagnetic environment to meet the order require- ments.

Key words：High Voltage transmission lines；power frequency electromagnetic field corona；radio inference (RI)；audible noise (AN)