江苏直流线路合成场强现状监测及分析

Monitoring and analysis of the total electric field of DC lines in Jiangsu province

对江苏境内直流输电线路下方及直流输电线路附近敏感点地面合成场强进行测量,直流输电线路下方地面合成场强水平在线路中心附近较低,边导线外地面合成场强随距边导线的距离增加先增大后减小的趋势,同时相同电压等级直流输电线路下方地面合成场强受线路净空高度影响较大;相同电压等级输电线路附近敏感点距离输电线路越远,地面合成场强水平越低。

The total electric field of DC lines at ground level and sensitive nearby ground in Jiangsu province has been measured. According to the measurement results, several conclusions have been obtained： the total electric field at ground level is weakest at the middle position of DC line; the total electric field at sensitive nearby ground has a trend that it increases first and then reduces with the increase of the distance; the height of DC line has an obvious influence on total electric field of DC lines at ground level; and a larger distance of the indicates a weak total electric field of DC lines at sensitive nearby ground.