摘要
为降低超高压输电线下工频电场对周围环境及人群的影响,笔者基于模拟电荷法,建立了超高压输电线路下方架设屏蔽线时计算工频电场强度的数学模型,并运用MATLAB软件对某500 kV输电线路下方架设屏蔽线后的工频电场强度进行仿真计算。重点分析了屏蔽线的架设数目、架设高度及排列方式对超高压输电线路下方工频电场强度分布的影响规律。最后从环境保护和屏蔽效果及屏蔽范围的角度,提出了垂直排列的最佳屏蔽线架设方式。
To lower the influence of power frequency electric-field intensity produced by the EHV transmission lines on environment and the crowd,mathematical model of power frequency electric field intensity on shielding line under the EHV lines was established based on the charge simulation method and also the power frequency electric-field intensity of a 500 kV transmission lines after setting up shielding lines was simulated by MATLAB software.Analysis focused on the number of the shielding lines,the height of the shielding lines,and the arrangement of the shielding lines affect to the power frequency electric-field intensity distribution under the EHV transmission lines separately.Lastly,considering the environmental protection,shielding effectiveness and shielding scope effect,as the best way to set up the shielding line,vertically aligned is put forward.
出处
《高压电器》
CAS
CSCD
北大核心
2011年第7期64-68,共5页
High Voltage Apparatus
关键词
超高压输电线路
模拟电荷法
工频电场强度
屏蔽效果
屏蔽范围
环境保护
EHV transmission lines
charge simulation method
power frequency electric-field intensity
shielding effect
shielding scope
environmental protection
