风电场对局地地闪的扰动分析OA

In the fields of atmospheric electricity and lightning physics,cloud-to-ground(CG)lightning refers to the discharge phenomenon occurring between thunderstorm clouds and the ground,represen-ting the type of lightning that poses the most significant threat to human activities and engineering fa-cilities(e.g.,wind power,transmission lines,buildings,and aviation).With the increasing height of towers and dimensions of blades in wind turbines,there is growing concern regarding whether these towering and rotating structures influence local CG lightning activity.This study collected high-preci-sion CG lightning monitoring data from 36 wind farms and their surrounding areas across five prov-inces between 2019 and 2023.A matched-pair controlled design was employed to compare the core are-as of wind farms with four control zones featuring homogeneous meteorological backgrounds,while Friedman's non-parametric test was utilized to analyze the impact of wind farms on local CG lightning frequency.Statistical results indicate no significant difference in the annual average number of CG lightning strikes within a 5 km engineering scale between wind farm regions and control regions.This suggests that the construction of wind farms does not alter CG lightning frequency at macro or local scales.Therefore,utilizing long-term historical lightning data for risk classification during the prelimi-nary micro-siting of wind farms is scientifically valid and effective.