通道宽度对线路通道雷电多重回击特性统计的影响Influence of Corridor Width on Multiple Lightning Return Stroke Characteristics Collection of Line Corridor
李特,周象贤,池伟,胡文堂,毛航银,王振国
LI Te,ZHOU Xiangxian,CHI Wei,HU Wentang,MAO Hangyin,WANG Zhenguo
摘要(Abstract)：
为解决线路通道雷电多重回击参数统计时的走廊宽度选择问题,以±800 kV宾金线浙江段为对象,在2.5 km, 5 km, 7.5 km和10 km走廊半径下开展多重雷回击参数统计分析,分析走廊宽度对多重雷后续回击次数、各次后续回击电流幅值、后续回击间隔、回击整体持续时间等参数的影响,并对多重雷回击参数统计时的线路走廊宽度选择进行了讨论。统计结果表明,线路走廊半径对多重雷持续时间、后续回击时间间隔统计结果影响较小;走廊半径为2.5 km和5 km时统计得到的平均后续回击次数、多重雷占比大于半径为7.5 km和10 km的情况;半径为2.5 km时,统计所得8～10次后续回击中回击强度大于1的比例偏少;综合考虑半径对回击次数和回击强度统计结果的影响,建议采用5km走廊半径开展多重雷参数统计。
To select appropriate corridor width to collect the multiple lightning return stroke parameters, the paper investigates the line sections in Zhejiang province of Yibin-Jinhua line and collects and analyzes multiple lightning return stroke parameters in different corridor widths of 2.5 km, 5 km, 7.5 km and 10 km. The paper analyzes the effect of corridor width on the lightning return stroke times, current amplitudes, return stroke intervals and the overall return stroke duration and discusses corridor width selection of the multiple lightning return stroke parameter collection. The collection result shows that the corridor width has little influence on the collected results of multiple lightning return stroke durations and subsequent stroke intervals; the results of average subsequent return stroke times and the proportion of multiple lightning with corridor widths of 2.5 km and 5 km are larger than the results with corridor widths of 7.5 km and 10 km; when the diameter is 2.5 km, the proportion of lightning return strokes with the stroke strength more than 1 is small in the collected 8～10 strokes. By considering the influence of diameter on return stroke times and strength collection,it is suggested adopting a 5 km corridor diameter to collect the parameters of multiple lighting strokes.
关键词(KeyWords)：
通道宽度;多重雷;回击次数;持续时间
corridor width;multiple lightning;return stroke times;duration
基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211DS16002P)
作者(Author):
李特,周象贤,池伟,胡文堂,毛航银,王振国
LI Te,ZHOU Xiangxian,CHI Wei,HU Wentang,MAO Hangyin,WANG Zhenguo
DOI: 10.19585/j.zjdl.201909011
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