Comparative Assessment of Numerical Techniques for Weibull Parameters’ Estimation and the Performance of Wind Energy Conversion Systems in Nigeria

IF 0.6 Q3 ENGINEERING, MULTIDISCIPLINARY

IIUM Engineering Journal Pub Date : 2023-01-04 DOI:10.31436/iiumej.v24i1.2611

I. Okakwu, D. Akinyele, O. Olabode, T. Ajewole, E. Oluwasogo, A. Oyedeji

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引用次数: 2

Abstract

The wind speed of a location is a critical parameter for analyzing wind energy conversion systems. Background knowledge has revealed that the two-parameter Weibull distribution is commonly used for fitting wind speed data because of its simplicity, flexibility and suitability. This research study examines wind speed data from five locations in Nigeria (Kano, Maiduguri, Jos, Abuja and Akure). It employs five numerical techniques, namely the maximum likelihood method, method of moment, power density method, empirical method and the logarithmic moment method, to estimate the Weibull parameters based on the locations’ data. The goodness of fit test is used to determine which numerical method best fits the distribution. The paper also considers the techno-economic design of wind electricity of five 25 kW pitch-controlled wind turbines with dissimilar characteristics. The test result presents the method of moment and empirical method as the best methods for calculating the Weibull parameters. Results also show that wind turbine-3 has the least cost of energy and wind turbine-5 has the highest cost of energy. ABSTRAK: Kelajuan angin sesuatu lokasi adalah parameter kritikal bagi menganalisa sistem penukaran tenaga angin. Latar belakang berkaitan telah mendedahkan 2-parameter taburan Weibull (Wbl) lazimnya digunakan bagi memadan data kelajuan angin berdasarkan kesederhanaan, fleksibiliti dan kesesuaian. Kajian penyelidikan ini adalah berkaitan ujian data kelajuan angin pada lima lokasi di Nigeria (Kano, Maiduguri, Jos, Abuja dan Akure). Ia menggunakan lima teknik berangka iaitu kaedah kemungkinan maksimum, kaedah momen, kaedah ketumpatan kuasa, kaedah empirikal dan kaedah momen logaritma bagi menganggar parameter Weibull berdasarkan lokasi data. Ujian kesesuaian digunakan bagi memastikan kaedah berangka adalah padanan paling sesuai bagi taburan. Kajian ini juga turut menimbang reka bentuk tekno-ekonomi elektrik angin bagi lima turbin angin 25 kW kawalan anggul dengan ciri berbeza. Dapatan kajian menunjukkan momen dan kaedah empirikal adalah kaedah terbaik bagi mengira parameter Weibull. Ini menunjukkan bahawa turbin angin-3 mempunyai kos tenaga paling rendah dan turbin angin-5 mempunyai kos tenaga tertinggi.

查看原文本刊更多论文

尼日利亚风电转换系统威布尔参数估计和性能数值技术的比较评估

一个地点的风速是分析风能转换系统的关键参数。背景知识表明，双参数威布尔分布因其简单、灵活和适用性而被广泛用于拟合风速数据。这项研究检查了尼日利亚五个地点(卡诺、迈杜古里、乔斯、阿布贾和阿库雷)的风速数据。采用极大似然法、矩量法、功率密度法、经验法和对数矩量法五种数值方法，根据位置数据估计威布尔参数。拟合优度检验用于确定哪种数值方法最适合分布。本文还考虑了不同特性的5台25kw桨距控制风力发电机组的技术经济设计。试验结果表明，矩量法和经验法是计算威布尔参数的最佳方法。结果还表明，3号风机的能源成本最低，5号风机的能源成本最高。摘要/ abstract摘要:本文研究了一种新型的、参数临界的双胞囊胞系统。Latar belakang berkaitan telah mendedahkan 2参数taburan Weibull (Wbl) lazimnya digunakan bagi memadan数据kelajuan angin berdasarkan kesederhanaan, flexsibiliti dan kesesuan。尼日利亚(卡诺、迈杜古里、乔斯、阿布贾和阿库尔)。Ia menggunakan lima teknik berangka iiitu kaedah kemungkinan maksimum, kaedah动量，kaedah ketumpatan kuasa, kaedah经验，kaedah动量logitma bagi mengangar参数Weibull berdasarkan lokasi数据。Ujian kesesuaian digunakan bagi masastikan kaedah berangka adalah padanan paling sesuaibagi taburan。Kajian ini juga turut menimbang reka bentuk技术经济elektrik angin bagi lima涡轮发电机25千瓦kawalan anggul dengan ciri berbeza。大巴坦，加健，menunjukkan，时刻，丹，加健，经验，加健，加健，加健，加健，加健，加健，加健，加健，加健，加健，参数威布尔。Ini menunjukkan bahawa turbinangin -3 mempunyai kos tenaga paling rendah dan turbinangin -5 mempunyai kos tenaga tertinggi。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IIUM Engineering Journal ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.10

自引率

20.00%

发文量

审稿时长

40 weeks

期刊介绍： The IIUM Engineering Journal, published biannually (June and December), is a peer-reviewed open-access journal of the Faculty of Engineering, International Islamic University Malaysia (IIUM). The IIUM Engineering Journal publishes original research findings as regular papers, review papers (by invitation). The Journal provides a platform for Engineers, Researchers, Academicians, and Practitioners who are highly motivated in contributing to the Engineering disciplines, and Applied Sciences. It also welcomes contributions that address solutions to the specific challenges of the developing world, and address science and technology issues from an Islamic and multidisciplinary perspective. Subject areas suitable for publication are as follows: -Chemical and Biotechnology Engineering -Civil and Environmental Engineering -Computer Science and Information Technology -Electrical, Computer, and Communications Engineering -Engineering Mathematics and Applied Science -Materials and Manufacturing Engineering -Mechanical and Aerospace Engineering -Mechatronics and Automation Engineering