石家庄地区输电线路雷击事故发生的气象指标研究

张翠华, 张文煜

Meteorological index of lightning strike accidents of transmission line in Shijiazhuang area

ZHANG Cuihua, ZHANG Wenyu

图1 1990—2017年河北石家庄输电线路雷击次数及发生概率的年际(a)、月际(b)、日(c)变化

Fig.1 The inter-annual (a), monthly (b) and diurnal (c) variation of the number and probability of transmission line lighting strike accidents in Shijiazhuang of Hebei Province during 1990-2017