±660kV宁东直流输电线电磁环境  

Electromagnetic Environment under the±660 kV Ningdong HVDC Lines

作　　者：王毅[1] 邓伟妮[1] 汤涛[1] 

机构地区：[1]山东电力工程咨询院有限公司,济南250013

出　　处：《电网与清洁能源》2009年第12期29-32,共4页Power System and Clean Energy

摘　　要：以宁东—山东±660kV直流线路工程为背景,针对2种运行方式,计算和分析了输电线路下方地面电场与离子流密度的分布情况,研究了工程投运后产生的电磁环境特点。结果表明:在双极运行方式下,地面场强与离子流密度均满足环境要求;由于同性电荷排斥作用,带有相同极性的高电压的并联极导线既加强了地面电场强度,又增加了离子流密度,因此极导线并联大地回线运行方式下的地面场强与离子流密度最大,实际工程中应尽量避免采取这种运行方式。Based on the two operation modes of the ± 660 kV HVDC Ningdong-Shandong Transmission Line, this papercalculates and analyzes the distribution of the round electric field and ion current density beneath the transmission line, and researches the characteristics of the electromagnetic environment after the project is put into operation. The research shows that under the bipolar operation mode, both ground electric field and ion current density can meet the environmental requirements; as two like electric charges repel each other, high voltage parallel lines with the same polarity increase the ground electric field intensity and ion current density, so the maximum ground electric field intensity and ion current density occurs when the polar conductor runs parallel to the ground return line and this phenomenon should be avoided as much as possible.

关 键 词：高压直流输电线 运行方式 合成场强 离子流密度 可听噪声 

分 类 号：TM131.3[电气工程—电工理论与新技术]