摘要
雷电参数的选取对于评估输电线路的防雷性能具有重要的意义。本文基于雷电定位系统测量的数据并以2km边长网格为单位统计网格地闪密度;拟合某地区雷电流幅值概率函数并用于跳闸率计算公式。国内外对合理地将雷电定位系统数据用于规程计算跳闸率做了大量的工作,并取得了一定的进展。本文采用修正受雷面积内的雷击次数和拟合的雷电流幅值概率函数用于计算跳闸率的规程公式中。通过与其它方案和运行数据相比较,该方法计算结果与运行数据较为一致,为输电线路防雷计算中参数的选取提供了一个新思路。
It＇s great significant that select of lightning parameters for estimate the lightning resistant property of Power transmission line.This paper in accordance with the measured data of lighting location systems statistics flash density For the side 2km squares ;Fitting PRD city amplitude lightning current probabilistic functions and calculation formula for tripped rate.The way of Calculation trip rate that rules recommend form experience,it＇s in exploration stage that used lightning location system data for procedures calculation tripped rate reasonably and make a great congress.This paper using N_L =N_sT_d（b＋4h）/N_g fixed lightning frequency of area by ray and use for the procedures for calculating trip rate. Comparison with other methods and operating data transmission lines Provides a new way of thinking for select of lightning parameters in the calculation Lines lightning protection.
出处
《河南电力》
2013年第1期33-36,共4页
Henan Electric Power
关键词
雷电定位系统
跳闸率
地闪密度
小网格
雷电流幅值概率分布
lighting location systems
trip-out
flash density
small gird
lightning current amplitude probability distribution
