透過您的圖書館登入
IP:3.144.35.148
  • 學位論文

應用概似不確定性估計法於風機發電量之推估

Evaluation of WECS Energy Output by the Generalized Likelihood Uncertainty Estimation Method

指導教授 : 余化龍
共同指導教授 : 張倉榮
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


近年來綠色能源的開發越來越受重視,而風能的開發技術越趨成熟,且開發成本亦越趨降低,若能有效地評估該區域的風能潛勢並善加利用,則可增加風機廠商投資意願,且可減少化石燃料對環境所造成之負擔。然而在評估一風場之發電量過程中,存在了許多不確定性,從風速分佈、參數之選取、甚至發電量推估都有不確定性存在,若能有效考慮每個環節之不確定性,將更能掌握一地風能分佈概況,使決策者能做出正確的判斷。 本研究採用概似不確定性估計法(Generalized Likelihood Uncertainty Estimation, GLUE)評估風機發電量之不確定性,此方法能將每個模擬值與實測值進行誤差驗證並賦予一適當之權重,以修正模擬結果。本研究亦與前人研究所使用的蒙地卡羅方法進行比較。本研究將澎湖中屯風力電廠2002年至2011年的十年發電資料分為12個月、強風期(1月至3月及10月至12月)、弱風期(4月至9月)以及全年度,共15個模擬情境,進而探討其模擬結果的不確定性。 研究結果發現,概似不確定估計法較蒙地卡羅法能掌握該區域發電概況,在大部分的模擬情境中都有較佳的模擬結果。在弱風的夏季及強風的冬季,發電量變異程度相差不大;而春、秋兩季為風速快慢交接的季節,風速變化較大,不確定性分佈之區間也較大。

並列摘要


Recently green energy, including wind energy, is attached great importance. Moreover, with the improvement of wind energy technology the cost of wind energy development is decreasing. If we can properly assess the wind energy potential in a region, we can provide an incentive to investors. In the process of assessing wind power generation, there exists uncertainties, such as distribution of wind speed, selection of parameters, and estimation of wind generating capacity, etc. Considered the uncertainty of each step, the wind energy output can be estimated accurately, then developers can have more information to make right judgments. This study uses the Generalized Likelihood Uncertainty Estimation (GLUE) to assess the uncertainty of wind energy capacity. By revising the difference between simulation and measured results and giving a proper weight, the GLUE method can give more accurate simulation results than the widely used Monte Carlo method. This study use the data from 2002 to 2011, collected from the wind power plant in Penghu Jhongtun, and divide the data into 15 simulated scenarios, i.e, 12 months, strong wind period (from January to March and October to December), low wind period (April to September) and the whole year, to explore simulation uncertainty. The research results indicate that the GLUE method has better simulation results than Monte Carlo method does. In most of the scenarios, the GLUE method can describe the realities of the situation. This result also shows that the wind power capacity is steady in summer and winter, while in spring and autumn, because the wind speed changes largely, the uncertainty distribution is relatively larger.

參考文獻


1. 史嘉瀚,2011,「風機發電量推估之不確定性分析-以中屯風力發電廠為例」,國立台灣大學生物系統環境工程學系碩士論文。
6. 張倉榮、杜逸龍、蔡志威,2006,「農田水利會灌區風力潛勢分析及其在枯水期進行地下水抽取以輔助水資源調配之評估(一)」,財團法人中正農業科技社會公益基金會九十四年農業科技研究計畫執行成果報告。
10. 許浩銘,2013,「都市淹水模擬不確定性評估與機率式淹水地圖研析」,國立台灣大學生物環境系統工程學系碩士論文。
14. 廖倫偉,2011,「應用概似不確定性估計於溼地參數之不確定性分析」,國立台灣大學土木工程研究所碩士論文。
16. 羅時麒,2005,「以系統性機率模式鑑定量化與整合生命週期評估之不確定性」,台灣大學環境工程學研究所博士論文。

被引用紀錄


陳俊龍(2017)。以概似不確定性估計法評估氣候變遷對台灣風能之影響〔博士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU201702135

延伸閱讀