线路杆塔接地装置雷电冲击特性仿真计算与模拟试验  

Simulation and Model Tests of Lightning Impulse Characteristics of Transmission Lines Tower Grounding Device

作　　者：陶礼兵[1] 刘浔[2] 蒋圣超[2] 孙帆[3] 程杨[4] 

机构地区：[1]浙江省电力公司衢州电力局,浙江衢州324000 [2]华中科技大学电气与电子工程学院,湖北武汉430074 [3]新疆电力公司新疆电力科学研究院,新疆乌鲁木齐830000 [4]湖北省电力公司武汉供电公司,湖北武汉430013

出　　处：《水电能源科学》2013年第8期166-169,共4页Water Resources and Power

摘　　要：杆塔接地装置的冲击接地电阻值直接影响输电线路的防雷效果,降低杆塔冲击接地电阻是降低线路雷击跳闸率的有效措施。采用ATP-EMTP仿真计算和模拟雷电冲击试验的方法,对杆塔接地装置的雷电冲击特性进行了研究,设计了一种改进型接地装置。经仿真分析验证,在不改变接地装置覆盖面积的情况下,该装置比普遍使用的接地装置型式具有更好的雷电冲击特性,可作为高土壤电阻率地区改善线路防雷的有效途径。The impulse grounding resistance of transmission lines tower has great influence on the lightning protection of transmission lines. Reducing the tower grounding resistance is an effective measure to reduce the lightning tripping rate. ATP-EMTP simulation and model tests are applied to study the lightning impulse characteristics of tower grounding device and an improved grounding device is designed. Comparison of the general devices, the simulation results show that the grounding device has better lightning protection impulse characteristics under the fixed covering area of grounding device. Thus, it can be used to improve the lightning protection of transmission line at the area with high soil resistivity.

关 键 词：输电线路 接地装置 冲击接地电阻 ATP—EMTP 模拟试验 

分 类 号：TM862[电气工程—高电压与绝缘技术]