杆塔钢筒基础桩冲击散流特性研究  

Impact Dissipation Characteristics of Steel Tube Foundation Pile of the Tower

作　　者：刘宇彬 徐志强[1] 熊栘贝 周力行[2] LIU Yubing;XU Zhiqiang;XIONG Yibei;ZHOU Lixing(State Grid Hunan Electric Power Company Economic Research Institute,Changsha 410000,China;Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]国网湖南省电力公司经济研究院,长沙410000 [2]长沙理工大学电气与信息工程学院,长沙410114

出　　处：《电瓷避雷器》2021年第4期10-15,共6页Insulators and Surge Arresters

基　　金：国家自然科学基金项目(编号:51777015);2020年湖南省电力有限公司依托工程基建新技术研究应用项目(编号:HN-YTKY-XL04)。

摘　　要：降低杆塔冲击接地电阻是输电线路防雷重要措施,杆塔接地系统的冲击散流特性主要受接地装置形状及土壤结构影响。应用CDEGS仿真研究了预制钢筒桩基础及其接地系统的冲击散流特性,获得了锚栓长度及数量、分层土壤结构以及加装水平接地极对钢筒桩基础冲击散流的影响;并在此基础上提出了应用预制钢筒桩基础降阻策略。可为输电线路接地工程提供参考。Reducing the impulse grounding resistance of the tower is an important measure for lightning protection of transmission lines.The impact dissipation characteristics of the tower grounding system are mainly affected by the shape of the grounding device and the soil structure.CDEGS simulation was used to study the impact dissipation characteristics of the prefabricated steel tube pile foundation and its grounding system.The effects of the length and number of anchor bolts,layered soil structure,and the installation of a horizontal grounding electrode on the impact tube dispersion were obtained;And on this basis,the resistance reduction strategy of prefabricated steel tube pile foundation is proposed.It can provide a reference for the transmission line grounding project.

关 键 词：钢筒基础桩 水平分层土壤 冲击接地电阻 冲击散流特性 

分 类 号：TM862[电气工程—高电压与绝缘技术]