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ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (4): 375-379.DOI: 10.19912/j.0254-0096.tynxb.2020-0766

• 电化学储能安全性与退役动力电池梯次利用关键技术专题 • 上一篇    下一篇

基于Copula函数的波浪周期-波高联合分布研究

宋春艳1, 刘攀1, 王远坤2, 马惠群1   

  1. 1.山东电力工程咨询院有限公司,济南 250013;
    2.南京大学地球科学与工程学院,南京 210046
  • 收稿日期:2020-08-05 出版日期:2022-04-28 发布日期:2022-10-28
  • 通讯作者: 宋春艳(1979—),女,学士、高级工程师,主要从事总图运输及海上风电方面的研究。songchuyan@sdepci.com

JOINT DISTRIBUTION OF WAVE PERIOD AND HEIGHT BASED ON COPULA FUNCTION

Song Chunyan1, Liu Pan1, Wang Yuankun2, Ma Huiqun1   

  1. 1. Shandong Electric Power Engineering Consulting Institute Co., Ltd., Ji’nan 250013, China;
    2. School of Earth Science and Engineering, Nanjing University, Nanjing 210046, China
  • Received:2020-08-05 Online:2022-04-28 Published:2022-10-28

摘要: 为研究波浪谱峰周期和有效波高联合分布,采用Weibull分布拟合谱峰周期和有效波高的边缘累积分布,根据周年实测逐时序列值估计参数Kendall τ,利用Gumbel-Hougaard Copula函数构建有效波高和谱峰周期联合分布函数,并与实测序列值统计结果进行对比分析。结果表明,Copula方法可较好拟合谱峰周期和有效波高的联合分布,且为连续函数分布,可为设计进行疲劳计算提供更加详实的数据,也为研究二者相互关系提供一种新的思路。

关键词: 海上风电, Weibull分布, 最大似然法, Copula函数

Abstract: In order to study joint distribution of peak period and effective wave height, Weibull distribution is used to fit edge cumulative distribution of peak period and effective wave height. Kendall τ, Gumbel-hougaard copula function are used to construct joint distribution function of peak period and effective wave height. Statistical results are compared with measured sequence values. Results show that Copula function method can better fit joint distribution of wave period and height, and it is a continuous function distribution, which provides a more detailed basis for design of fatigue calculation, and also provides a new way to study relationship between them.

Key words: offshore wind power, Weibull distribution, maximum likelihood, Copula function

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