石家庄地区输电线路雷击事故发生的气象指标研究
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张翠华, 张文煜
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Meteorological index of lightning strike accidents of transmission line in Shijiazhuang area
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ZHANG Cuihua, ZHANG Wenyu
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表2 1990—2017年河北石家庄输电线路雷击事故发生前6 h内气象要素的波动幅度及对应雷击发生频率
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Tab.2 The fluctuation range of meteorological elements and corresponding frequency of lightning strikes in 6 hours before the transmission line lightning strike accidents in Shijiazhuang of Hebei Province during 1990-2017
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| 雷击前6 h | | 雷击前3 h | | 雷击前1 h | | 波动幅度 | LF/% | 波动幅度 | LF/% | 波动幅度 | LF/% | | P6上升0.4~6.5 hPa | 57.1 | | P3上升0.1~25.1 hPa | 78.6 | | P1上升0.1~10.5 hPa | 78.6 | | P6下降0.1~6.6 hPa | 40.0 | | P3下降0.1~3.8 hPa | 21.4 | | P1下降0.1~1.2 hPa | 17.1 | | RH6上升2%~66% | 87.1 | | RH3上升1%~60% | 92.9 | | RH1上升1%~51% | 81.4 | | RH6下降3%~34% | 8.6 | | RH3下降1%~16% | 7.1 | | RH1下降1%~16% | 10.0 | | T6上升0.6~9.6 ℃ | 9.8 | | T3上升0.1~2.2 ℃ | 7.8 | | T1上升0.1~1.0 ℃ | 5.9 | | T6下降0.1~12.3 ℃ | 89.2 | | T3下降0.1~13.6 ℃ | 92.2 | | T1下降0.1~12.8 ℃ | 92.2 | | LST6上升1.2~17.8 ℃ | 11.8 | | LST3上升0.4~7.2 ℃ | 6.9 | | LST1上升0.1~3.8 ℃ | 4.9 | | LST6下降0.7~37.9 ℃ | 88.2 | | LST3下降0.4~36.5 ℃ | 93.1 | | LST1下降0.1~24.3 ℃ | 93.1 |
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