An 11-year study on the characteristic parameters of negative cloud-to-ground multiple ground strike point lightning flashes in Guangdong Province of China

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Electric Power Systems Research Pub Date : 2025-02-16 DOI:10.1016/j.epsr.2025.111477

Yudong Jiang , Fuchang Lin , Xiang Su , Yuyang Luo , Hua Li , Qian Li

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引用次数: 0

Abstract

This study aims to comprehensively and deeply analyze characteristic parameters of negative cloud-to-ground (CG) multiple ground strike point (GSP) lightning flashes for designing and optimizing lightning protection systems. Thus, based on the RS data from the Guangdong lightning location system (GDLLS), the lightning characteristic parameters were extracted from RSs detected between 2010 and 2020 by the k-means clustering algorithm developed based on Python. The attention is focused on the lightning current, the number of GSPs per flash, the number of RSs per GSP, and the interval time between RSs contacting the same GSP, and is to distinguish characteristic parameters in the first and subsequent GSP. In addition, spatial visualization of lightning characteristic parameters was completed through the Geopandas library in Python. The correlation between CG flash density traditionally used to assess lightning risk and characteristic parameters of multiple GSP lightning flashes was analyzed. The lightning current, interval time, and GSP correlate positively with CG flash density, while RS is negatively correlated. The aerosol content and lightning leader channel charge in different regions explain this phenomenon.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.