特高压交流输电线路附近钢架平台处人体与晾衣架感应电特性研究  

The Induced Electrical Characteristics of Human Body and Metal Clothes Rack at the Steel Frame Platform Near the UHV AC Transmission Line

作　　者：何旺龄 汤荣 刘云鹏[1] 闫博虎 张胤禄 He Wangling;Tang Rong;Liu Yunpeng;Yan Bohu;Zhang Yinlu(Department of Electrical Engineering North China Electric Power University,Baoding 071003 China;Hebei Key Laboratory of Green and Efficient New Electrical Materials and Equipment North China Electric Power University,Baoding 071003 China)

机构地区：[1]华北电力大学电力工程系,保定071003 [2]河北省绿色高效电工新材料与设备重点实验室,保定071003

出　　处：《电工技术学报》2024年第23期7605-7615,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(52277009)。

摘　　要：特高压交流输电线路附近钢架平台处人体接触晾衣架等金属物体可能会发生暂态电击,使居民产生不悦感与惊吓,因此研究上述场景下的感应电特性至关重要。该文利用有限元方法建立1 000kV线路模型,计算了晾衣架和人体的感应电压,然后基于Matlab建立了暂态电击模型,计算了发生电击时的暂态电击电流。结果表明:平台处人体与晾衣架的感应电压与所处位置有关,高度越高,感应电压越高,暂态电击电流也越大;人体是否绝缘对感应电压和暂态电流大小的影响较大。最后,该文在1 000 kV特高压交流线路下方附近区域搭建了钢架平台,对人体与平台上晾衣架间的暂态电击特性进行实际测量,获得了电击发生时的暂态电流特征。通过对比可知,试验结果与仿真结果基本保持一致,验证了模型的有效性。With the increasing number of transmission lines,the line corridors are becoming scarce and the proximity of lines to residential areas is more common.Due to electrostatic induction,the potential on human body and metal structures will be induced.If there are potential differences between them,the transient electric shock will occur when they are in contact.Consequently,the human body will feel electric shock,triggering displeasure or panic,and even triggering line complaints or an engineering boycott.As the operating voltage increases to UHV level,this phenomenon occurs more obviously due to the higher electric field strength.The human body touches metal objects such as metal clothes rack is the common life event.If the living room is near the UHV AC transmission lines,the transient electric shock maybe occurs frequently.Therefore,it is important to study the inductive electrical characteristics of this scenery.In this paper,the transient electric shock research near the UHV transmission line is divided into two types,one is that the human body is well grounded,the metal clothes rack is insulated,and the electric shock is occurred from metal clothes rack to human body;the other is the human body is insulated,the metal clothes rack is well grounded,and the electric shock is occurred from human body to metal clothes rack.Based on above scenarios,an UHV AC transmission line model was established according to the practical UHV transmission lines,the induced voltages of insulated objects were calculated,and the transient electric shock currents of different conditions were obtained by combining the proposed transient shock simulation model.Then a practical test platform was constructed near a 1000 kV AC transmission line,and the transient electric shock experiments were conducted.The induced voltage and the transient electric shock current were measured and compared with the simulation results.It is found that the computational results of the model are close to those of the experiments.The following conclusions can b

关 键 词：输电线路 感应电 钢架平台 暂态电击 

分 类 号：TM81[电气工程—高电压与绝缘技术]