500kV同塔双回输电线路雷击塔顶跳闸率的计算分析  

Calculation and Analysis of Lightning Outage Rate for 500 kV Double Circuit Transmission Line by Lightning Strike to the Tower

作　　者：何翔宇[1] 

机构地区：[1]西华大学电气信息学院,成都610039

出　　处：《成都工业学院学报》2014年第2期46-48,共3页Journal of Chengdu Technological University

摘　　要：耐雷水平直接影响着电力系统的安全性和可靠性。为确定各种因素对500 kV同塔双回输电线路耐雷水平的影响,基于ATPDraw软件,并结合现有比较成熟的JMARTI频变线路模型,建立了既考虑冲击电晕又考虑参数频变特性的输电线路仿真计算模型,针对雷击塔顶时,导线运行电压相位角的随机性,假定雷击出现于交流一周期的任一角度区间内的概率相等的情况下,仿真计算分析结果表明:不同接地电阻对线路跳闸率的影响可达10倍以上,不同的导线排列方式以及杆塔呼称高度对输电线路耐雷水平也有着较大影响。Lightning resistant level is an important performance index for measuring the lightning tolerance of transmission lines. In order to determine the influence of various factors on 500 kV double circuit transmission line lightning resistant level , Using ATPDraw software, and combined with the existing mature JMARTI frequency-dependent line model, a transmission line simulation model is established considering both impulsive corona and frequency-dependent parameter. Furthermore, considering the randomness of working voltage＇s phase when lightning strokes the top tower and supposing the probability of lightning appearing arbitrary phase in a cycle of AC is equal, through the simulation, the influence of different grounding resistance for line tripping rate can reach more than 10 times, different wire arrangement and tower height on lightning resistant level of transmission line also has a great influence.

关 键 词：同塔双回线路 反击 雷击跳闸率 ATPDRAW 

分 类 号：TM75[电气工程—电力系统及自动化]