电气-几何模型对位置因子精细化取值的应用研究  

Study on the application of electro-geometric model in calculating the position factor

作　　者：史雅静[1] 赵佳 陈仁君 SHI Ya-jing;ZHAO Jia;CHEN Ren-jun(Hubei Provincial Lightning Protection Center,Wuhan 430074,China;Wuhan Tianhong Lightning Detection Center Development Company,Wuhan 430074,China)

机构地区：[1]湖北省防雷中心,武汉430074 [2]武汉天宏防雷检测中心发展有限公司,武汉430074

出　　处：《湖北农业科学》2019年第13期60-63,共4页Hubei Agricultural Sciences

基　　金：湖北省气象局科技发展基金项目(FL-Z-201403)

摘　　要：选取电气-几何模型计算雷击风险评估中位置因子(CD)的方法,结合湖北省的雷电流幅值概率分布情况,通过实例对评估对象位置因子的取值以及等效截收面积进行分析计算。然后用AutoCAD作图法对上述方法计算得出的评估对象的等效截收面积进行验证,得出该取值法在适用范围上具有一定的局限性,且不能准确表征出周围建筑对评估对象等效截收面积的影响程度。The electric-geometric model was used to calculate the position factor (CD) value in the risk assessment of lightning strikes. Combined with the distribution of the lightning current amplitude probabilities in Hubei province, the value of the position factor and the equivalent area of the evaluation object were analyzed and calculated with actual examples. Then the evaluation object calculated by the above method was verified by AutoCAD drawing method, and it was concluded that this method was limited in the scope of application, and it could not accurately represent the impact of the surrounding building to the equivalent intercept area of the evaluation object.

关 键 词：电气-几何模型 位置因子 等效截收面积 

分 类 号：TM866[电气工程—高电压与绝缘技术]