摘要
由于雷击输电线路的随机过程众多,随机因素对输电线路的跳闸率有一定的影响,传统的分析方法不能具体反映这些过程的随机性。因此,基于电气几何模型法分析输电线路的绕击概率,并考虑雷电入射角、雷电流参数、地面倾角及工频电压等因素对输电线路耐雷性能的影响,根据蒙特卡罗方法的原理,用MATLAB模拟随机过程中的随机参数,对于随机性较大的雷电流参数,结合实际数据验证了IEEE推荐的幅值概率公式更符合客观情况。基于电气几何模型和蒙特卡罗法的结合,推导出了具有普适性的跳闸率计算公式,并验证了该方法可以客观并具体地评估输电线路的耐雷性能,可为工程上输电线路的防雷分析及绝缘配置提供参考。
Due to the random processes of lightning transmission line is numerous. Random tactors have an impact on the tripped rate of transmission lines. Traditional analysis methods can not specifically reflect the randomness of these processes. Therefore, taking into account the effects of lightning incidence angle, the lightning current parameters, ground obliquity and power frequency voltage on the lightning protection performance, Shielding failure probability of transmission hnes is analyzed based on the Electro-Geometric Model （EGM）. According to the principle of the Monte Carlo method, MATLAB is used to simulate parameters of random process. For the randomness of the lightning current parameters, combined with the actual data, the amplitude probabihty formula IEEE Recommended is verified more in line with the objective situation. Based on combination of EGM and Monte Carlo method, a tripping rate calculation formula of universality is deduced and the method is verified can provide objective and can provide reference for lines. and specific assessment of lightning protection analysis lightning performance of transmission lines, and insulation configuration of transmission
出处
《电瓷避雷器》
CAS
北大核心
2016年第1期116-122,共7页
Insulators and Surge Arresters
基金
甘肃省自然科学基金(编号:148RJZA053)
中国铁路总公司科技研究开发计划(2013J010-E)
关键词
蒙特卡罗法
电气几何模型
绕击跳闸率
耐雷性能
Monte Carlo Method
Electro-Geometric Model
shielding failure trip--out rate
lightningperformance
