中国电力 ›› 2015, Vol. 48 ›› Issue (8): 46-52.DOI: 10.11930.2015.8.46

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概率分布模型对导线标准冰厚极值的影响

杨加伦1,朱宽军1,刘彬1,尹泉1,叶成志2,李兴宇3   

  1. 1. 中国电力科学研究院,北京 100055;
    2. 湖南省气象台,湖南 长沙 410007;
    3. 中国科学院 大气物理研究所,北京 100029
  • 收稿日期:2015-03-01 出版日期:2015-08-25 发布日期:2015-11-25
  • 作者简介:杨加伦(1981—),男,河北永清人,高级工程师,从事架空输电线路覆冰及振动研究。E-mail: yangjialun@epri.sgcc.com.cn
  • 基金资助:
    国家自然科学基金资助项目(51305411);国家电网公司科技资助项目(GCB1720201400162);财政部/科技部公益类行业专项资助项目(GYHY201306016)

Impact of Probability Distribution Model Selection on Extreme Value of Conductor Ice Thickness

YANG Jialun1, ZHU Kuanjun1, LIU Bin1, YIN Quan1, YE Chengzhi2, LI Xingyu3   

  1. 1. China Electric Power Research Institute, Beijing 100055, China;
    2. Hunan Meteorological Observatory, Changsha 410007, China;
    3. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • Received:2015-03-01 Online:2015-08-25 Published:2015-11-25
  • Supported by:
    National Natural Science Foundation of China(No.51305411); and by State Grid Corporation of China (No.GCB1720201400162); and by the public welfare special fund of the Ministry of Finance and the Ministry of Science and Technology (No. GYHY201306016).

摘要: 概率分布模型对输电线路导线标准冰厚不同重现期极值具有一定的影响。重点研究了皮尔逊Ⅲ型分布模型(P-Ⅲ)、广义极值分布模型(GEV)和广义帕雷托分布模型(GPD)3种概率分布模型,并且用模型对湖南南岳山气象站的南北向、东西向、二方向较大值、二方向较小值的历史覆冰数据进行计算,分析对不同重现期覆冰厚度的影响。研究结果有助于合理确定架空输电线路导线设计中允许的覆冰厚度。

关键词: 输电线路, 覆冰, 分布模型, 皮尔逊Ⅲ型, 广义极值, 广义帕雷托, 标准冰厚, 重现期

Abstract: The selection of different probability distribution models can influence conductor ice thickness for specific return period. This paper discuss 3 typical models, namely Pearson Ⅲ distribution, Generalized extreme value distribution and Generalized Pareto distribution. The model applications on historical ice data from Nanyue Mountain weather station of Hunan province are analyzed. The results are helpful for final design of overhead transmission lines during terms of conductor ice thickness calculation.

Key words: transmission line, icing, modeling, pearson Ⅲ distribution, generalized extreme value distribution, generalized pareto distribution, standard ice thickness, return period

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