摘要
为了研究安装场地环境对地面大气电场观测的影响,选取呼和浩特市2018—2020年大气电场观测资料,运用数理统计和有限差分方法开展了建筑物对地面大气电场影响的观测分析和模拟研究。结果表明,呼和浩特地区晴天大气电场日变化呈双峰双谷型,晴天大气电场均值为123.34 V/m;其日变化与全球普遍变化较为一致,一年之中冬春季晴天大气电场强度较高。当大气电场仪安装在不同高度的建筑物屋顶或安装在离建筑物不同距离的地面时,建筑物对大气电场测量值影响的模拟结果表明,大气电场仪测量值修正系数与建筑物高度呈正相关,遮蔽仰角与建筑物高度呈正相关,而地面影响距离随着建筑物高度的不断增加其增大幅度减小;模拟的修正系数比较适合于该站长期观测大气电场的均值的修正。
In order to study the influence of installation site on the observation of atmospheric electric field on the ground,based on the data of atmospheric electric field from Hohhot 2018 to 2020,the observation analysis and simulation study of the influence of buildings on the ground atmospheric electric field were carried out by using mathematical statistics and finite difference method.The results show that the diurnal variation of the atmospheric electric field in Hohhot on fair-weather was double-peak and double-valley,and the average value of the atmospheric electric field on fair-weather was123.34 V/m;its diurnal variation was consistent with the global change,and the intensity of the atmospheric electric field on fair-weather in winter and spring was relatively higher throughout the year.When the atmospheric electric field meter is installed on the roof of a building with different heights or on the ground with different distances from the building,the simulation results show that the correction coefficient of the measured value of the atmospheric electric field meter was positively correlated with the height of the building,The height of the building was positively correlated with the shielding elevation angle,and the ground influence distance increases with the increasing height of the building.The correction coefficient of simulation was more suitable for the mean value of atmospheric electric field observed in the station for a long time.
作者
刘晓东
李庆君
宋昊泽
石茹琳
LIU Xiaodong;LI Qingjun;SONG Haoze;SHI Rulin(Inner Mongolia Meteorological Institute,Hohhot 010051,China;Inner Mongolia Key Laboratory Of Manual Weather Modification,Hohhot 010051,China;Inner Mongolia Lightning Warning&Protection Center,Hohhot 010051,China)
出处
《电气应用》
2023年第4期41-48,共8页
Electrotechnical Application
基金
内蒙古自治区自然科学基金(2020MS04005)。
关键词
大气电场
建筑物
影响
修正系数
atmospheric electric field
building
influence
correction coefficient
作者简介
刘晓东(1981-),男,硕士,正高级工程师,研究方向为大气电学、雷电防护。
