CAJ | 학술논문

为改善采用网格法得出雷电参数统计值可信度与空间精度不够高的缺陷而提出了改进网格法,该方法将传统网格法的单一参数（网络面积）扩展到双参数（网络面积和观测范围）。以重庆市某年雷电定位数据为例,比较分析了传统网格法和改进网格法在雷电日、雷电小时、地闪密度3类雷电参数统计时的差异。统计结果表明,采用改进网格法时3类统计值均不会随网格精度的提高而出现显著变化,其可信度及空间精度均高于传统网格法,且所得雷电参数的物理意义更明确。改进网格法可为提高差异化防雷设计提供支持。
위개선채용망격법득출뇌전삼수통계치가신도여공간정도불구고적결함이제출료개진망격법,해방법장전통망격법적단일삼수（망락면적）확전도쌍삼수（망락면적화관측범위）。이중경시모년뇌전정위수거위례,비교분석료전통망격법화개진망격법재뇌전일、뇌전소시、지섬밀도3류뇌전삼수통계시적차이。통계결과표명,채용개진망격법시3류통계치균불회수망격정도적제고이출현현저변화,기가신도급공간정도균고우전통망격법,차소득뇌전삼수적물리의의경명학。개진망격법가위제고차이화방뢰설계제공지지。
To deal with disadvantages that the credibility and spatial resolution of lightning parameters calculated by traditional grid method（TGM）are not high enough,we proposed an improved grid method（IGM）.IGM substitutes a couple of parameters（grid area and monitored radius）for the single parameter（grid area）in TGM.Taking lightning data recorded by lightning location system in Chongqing as an example,we illustrate the differences of the two methods in the statistics of thunderstorm day,thunderstorm hour and ground flash density.The results show that the three kinds of lightning parameters don＇t change sharply with the improvement of spatial resolution by the method of IGM,and the physics meanings of lightning parameters gained by means of IGM are clearer than the ones by means of TGM.Therefore,compared with the TGM,the spatial resolution and credibility of lightning parameters calculated by IGM is better,which can provide a good support for the differentiated lightning protection design.