高海拔景观塔耐雷性能分析及提升措施研究

Lightning withstand performance analysis and enhancement method of high-altitude landscape tower

文中开展了高海拔景观塔耐雷性能的分析,为制定针对性的高海拔景观塔耐雷性能提升措施提供可靠依据。分别建立了雷电流波模型、输电线路模型、景观塔多波阻抗模型、绝缘子串先导发展闪络模型,基于ATP-EMTP中的仿真计算分析了海拔高度、杆塔接地电阻、杆塔呼高、避雷器设置等对景观塔反击耐雷水平的影响,研究了景观塔的绕击防雷性能,在此基础上提出了针对性的景观塔反击耐雷水平提升措施,并与典型酒杯型杆塔的耐雷性能进行了比较。文中为高海拔地区景观塔防雷方案设计提供了参考。

This paper analyzes the high-altitude landscape tower lightning withstand performance of the Ali interconnection project to provide a reliable basis for the development of specific lightning performance enhancement measures for high-altitude landscape tower.The lightning current wave model,the transmission line model,the landscape tower multi-wave impedance model,and the insulator string pilot development flashover model are established respectively.Based on the simulation calculation in ATP-EMTP,the effects of altitude,tower grounding resistance,tower height and arrester setting on the lightning withstand level of landscape towers are analyzed,and the shielding lightning protection performance of the landscape tower is studied,and it is compared with the lightning withstand performance of typical wine glass tower.Based on these works,the specific measures to improve the lightning withstand levels of landscape towers are advised.This paper provides a reference for the design of lightning protection scheme for landscape towers in high-altitude areas.