摘要
雷电流幅值是研究区域雷电分布极其重要的一个参数,目前河南省在雷电流幅值方面的研究较少。利用2008—2017年河南省气象部门ADTD闪电定位系统的地闪监测数据,对规程法、IEEE工作组和CIGRE工作组推荐公式的特征函数进行了拟合。结果表明:河南正、负地闪雷电流幅值概率分布存在差异,采用IEEE工作组推荐的公式对河南雷电流幅值累积概率分布进行的拟合效果最佳,同时得出了河南省雷电流幅值累积概率分布函数表达式,为更好地研究河南省雷电特征和开展防雷减灾工作提供了不可或缺的技术参考。
The magnitude of lightning current is an important parameter for studying the distribution of lightning in a region.This paper uses the lightning monitoring data of the ADTD lightning positioning system of Henan Province from 2008 to 2017 to fit the characteristic function of the formula recommended by the protocol method,IEEE working group and CIGRE working group.The results show that there are differences in the probability distribution of positive and negative lightning current values in Henan.The formula recommended by the IEEE Working Group is used to fit the probability distribution of the accumulated magnitude of the lightning current in Henan Province.At the same time,the expression of the probability distribution function of the accumulated magnitude of the lightning current in Henan Province is obtained.It provides an indispensable technical reference for studying the characteristics of lightning in Henan Province and carrying out lightning protection and disaster reduction.
作者
邱洋
QIU Yang(Xuchang Meteorological Service,Henan,Xuchang 461000)
出处
《气象科技》
2020年第1期121-126,共6页
Meteorological Science and Technology
基金
河南省气象局面上科研项目(KM201931)资助.
关键词
雷电流幅值
闪电定位系统
最小二乘法
累积概率
概率分布
lightning current magnitude
lightning location system
least squares technique
accumulative probability
probability distribution
