基于FDTD混合算法的雷击杆塔的浪涌分析  

FDTD hybrid algorithm based surge analysis of lightning tower

作　　者：谷建宏 廖成[1] 叶志红[2] 杨丹[1] 

机构地区：[1]西南交通大学电磁场与微波技术研究所,四川成都610031 [2]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《现代电子技术》2018年第5期116-119,共4页Modern Electronics Technique

基　　金：国家重点基础研究发展计划(973计划)(2013CB328904)~~

摘　　要：由于传统的电磁暂态分析程序ATP-EMTP在对雷电直击杆塔的浪涌进行估计时不够准确,故将传统FDTD方法与细导线FDTD方法结合起来,对雷击杆塔的过程进行建模,模拟和分析雷击杆塔引起的浪涌信号在塔上三相电线上耦合产生的过电流响应,同时分析了绝缘子的击穿电压和击穿时间。研究结果表明,基于FDTD方法雷击杆塔的线上电流比ATP-EMTP要小,可以有效地估计输电线路和绝缘子的耐雷水平。Since the traditional electromagnetic transient analysis program ATP-EMTP can′t accurately estimate the surges of the lightning striking tower,the traditional FDTD method and thin-wire FDTD method are combined to model the process of the lightning tower,simulate and analyze the overcurrent response generated by three-phase electric wires coupling of surge signal induced by the lightning tower,and analyze the breakdown voltage and breakdown time of the insulator. The research results show that the FDTD method has smaller line current of lightning tower than ATP-EMTP,and can effectively estimate the lightning tolerance level of the transmission line and insulator.

关 键 词：细导线FDTD 杆塔结构 过电流响应 绝缘子 雷击杆塔 浪涌分析 

分 类 号：TN99-34[电子电信—信号与信息处理] TM863[电子电信—信息与通信工程]