信阳地区高压输电线路防雷原则

Lightning Protection Principle of HV Power Transmission Lines in Xinyang City

为进一步提高线路防雷的科学性,以信阳地区为例,采用ATP-EMTP模型、电气几何模型逐基计算了高压输电线路杆塔,通过反击、绕击跳闸率结果确定线路杆塔易闪段、易闪点,并根据计算结果特性提出了防雷侧重点,基于雷电活动、地质条件、杆塔地形和塔形结构提出了高压输电线路3类雷电防护等级及对应差异化防雷措施的防雷原则,以供借鉴。

In order to improve lightning protection standard of power transmission lines,ATP-EMTP and EGM model are used to calculate poles and towers of HV power transmission lines in Xinyang city.The flashover and flash point for poles and towers of power transmission lines are determined with the results of trip rate.And then three kinds of lightning protection grade and the corresponding differentiation lightning protection measures are proposed by using lightning activities,geological conditions,terrain and tower structure.Thus,it provides reference for engineering application.