干旱气象 ›› 2015, Vol. 33 ›› Issue (1): 180-184.DOI: 10.11755/j.issn.1006-7639(2015)-01-0180

• 业务技术应用 • 上一篇    

气象要素对电力污闪发生的影响

张翠华   

  1. 河北省石家庄市气象局,河北 石家庄 050081
  • 出版日期:2015-02-28 发布日期:2015-02-28
  • 作者简介:张翠华(1976-),女,河北藁城人,硕士,工程师,主要从事气象资料分析与应用研究.E-mail:zch7695@sina.com

Influence of Meteorological Elements on Electric Power Pollution Flashover Occurrence

ZHANG Cuihua   

  • Online:2015-02-28 Published:2015-02-28

摘要:

利用石家庄地区1990~2013年电力污闪事故发生的详细资料,归纳整理出污闪发生的一般规律,结合诱发污闪发生的天气现象和气象要素,综合在不同气象条件下污闪发生的可能性大小,对其进行分级,给出污闪发生级别的综合预测标准,从而判定预测电力污闪发生的气象指数,并提出必要安全预防措施结果表明:当气温>15.6 ℃,相对湿度<45%,风速>4.8 m/s时天气晴朗,不会发生污闪;在相对湿度80%,风速2.0 m/s时,气温在-7.5~7.5 ℃时出现雾,气温在-4.5~4.5 ℃时出现积雪或结冰,极易发生污闪;在相对湿度80%,风速2.0  m/s,气温在-4.5~4.5 ℃时出现液态、混合或固态降水、轻雾,容易发生污闪。

关键词: 发生规律, 气象条件, 指数判定, 电力污闪

Abstract:

Electric power pollution flashover occurring under different meteorological conditions was analyzed to improve the ability about prediction of it.Based on the detailed information on electric power pollution flashover from 1990 to 2013 in Shijiazhuang,its general rules were organized and classified.Comprehensive prediction criterion of electric power pollution flashover was given, the meteorological index criterion was determined, and the necessary safety precaution was proposed according to weather phenomenon and meteorological elements. The results show that electric power pollution flashover would not happen when it was sunny with temperature more than 15.6  ℃, the relative humidity less than 45% and wind speed greater than 4.8 meters per second.Electric power pollution flash-over would happen very easily when it was misty with temperature being from - 7.5 ℃ to 7.5 ℃, and it was snowy and icy with temperature being from - 4.5  ℃ to 4.5  ℃ under the condition of relative humidity being not less than 80% and wind speed being not greater than 2. 0 meters per second. Electric power pollution flashover would happen easily when it was liquid, solid or mixed precipitation and it was light fog under the condition of relative humidity move than 80% and wind speed less than 2.0 meters per second.

Key words: electric power pollution flashover, occurrence regularity, meteorological condition, index criterion

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