强激光与粒子束2011，Vol.23Issue(3)：721-726,6.DOI:10.3788/HPLPB20112303.0721
3维电介质击穿模型在雷电防护系统评估试验中的应用
Application of three-dimensional dielectric breakdown model to lightning protection system evaluation
摘要
Abstract
To develop the evaluation methods of lightning protection system, the high resolution simulation of cloud-to-ground lightning leaders was done based on a 3-D dielectric breakdown model(DBM) in an analytic thunderstorm model, then an evaluation model was established near ground and the evaluation experiment was done. The space resolution is 50 m and the evaluation area resolution is 1 m in the experiment, which could satisfy modeling definition. Using successive overrelaxation method to solve the 3-D DBM, the trace of cloud-to-ground step lightning leaders and potential distribution in space could be gotten. When step lightning leaders arrive at the boundary of evaluation area, 2-D cubic spline method is used to transform the resolution between space and evaluation area. When leader tips approach the striking range, the unitary E-field near buildings in the evaluation area and the unitary striking probability could be gotten, and the building struck could be selected by Monte Carlo method. Thus the lightning protection system could be evaluated with statistical data of large quantities of experiments. An example was given to test the evaluation model.关键词
电介质击穿模型/地闪先导/分形生长/评估模型/分辨力转换Key words
dielectric breakdown model/ cloud-to-ground lightning leaders/ fractal development/ evaluation model/resolution transform分类
天文与地球科学引用本文复制引用
陈强,魏光辉,陈亚洲,万浩江..3维电介质击穿模型在雷电防护系统评估试验中的应用[J].强激光与粒子束,2011,23(3):721-726,6.基金项目
国家自然科学基金项目(51077132) （51077132）
