雷暴云背景下超高压输电线路近区电场分析模型研究  

Research on Electric Filed Analytical Model Near EHV Transmission Lines Under Thunderclouds

作　　者：毛近贤 王伟芳 张毅龙 肖慈恩 刘亚坤[1] MAO Jinxian;WANG Weifang;ZHANG Yilong;XIAO Cien;LIU Yakun(Key Laboratory of Control of Power Transmission and Conversion,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《高压电器》2025年第3期184-191,共8页High Voltage Apparatus

摘　　要：输电线路运行常遇到雷暴云活动影响电场环境,雷暴云几何直径可达数十公里且具有可移动特征,已有研究仍缺乏雷暴云背景下输电线路—近区房屋结构的电场分析方法,同时现有实验研究缺少雷暴云—输电线路—近区房屋整体模型的缩放比例选择依据。为此,以雷暴云存在时超高压输电线路及近区房屋整体为对象,基于雷暴云的3层电荷结构,提出雷暴云—输电线路—近区房屋的分析模型,分析雷暴云活动下输电线路及其近区房屋观测点处的电场特征,讨论雷暴云—输电线路—近区房屋整体结构的实验模型缩放比例的影响。研究得到,雷暴云活动使得超高压输电线路近区房屋的电场峰值增大47%,电场的直流分量提高40%,工频分量提高200%,5种比例下1∶40实验模型缩比得到的电场偏差最小。The thunderclouds activities encountered frequently by the transmission lines in operation affect electric field environment.The geometric diameter of the thunderclouds can reach tens of kilometers and have continuous movement characteristics.The existed research still lacks the electric field analysis method transmission line-nearby building structure under background of thunderclouds and,at the same time,the existing experimental research lacks the scale selection basis of thunderclouds-transmission line-nearby building overall model.Therefore,the extrahigh voltage(EHV)transmission lines and the nearby buildings in case of thunderclouds is taken as the object and on the basis of the three-layer charge structure,the analysis model of the thunderclouds-transmission lines-nearby building is proposed to analyze electric field characteristic at observation point of the transmission line and the nearby building under the thunderclouds activity and discuss the overall influence of the scale ratio of the experiment model of thunderclouds-transmission lines-buildings.It is concluded through the research that the peak of the electric field of the observation point on the building due to active thunderclouds increases by 47%.The DC component and power frequency component of the electric field increases by 40%and 200%,respectively.The electrical field deviation is lowest at the ratio of 1∶40 for the experiment scale model among the five ratios.

关 键 词：输电线路 电场 雷暴云 建模 缩放比例 

分 类 号：P446[天文地球—大气科学及气象学] TM75[电气工程—电力系统及自动化]