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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68533

    Title: 在史瓦濟蘭魯旁保平原風電潛力的可行性研究;A Feasibility Study on the Potential of Wind Electricity Generation in Lubombo Plateau, Swaziland
    Authors: 施裴莉;Simelane,Siphelele Nonduduzo
    Contributors: 國際永續發展碩士在職專班
    Keywords: Feasibility study;RETScreen;Weibull distribution;Wind energy;Wind power density;Capacity factor
    Date: 2015-07-09
    Issue Date: 2015-09-23 12:00:10 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 中文摘要
    。透過 30 個月的風速資料中,包含在高度 10、20、30、40、50 公尺以及垂
    直方向外差得到 80 公尺高度下每小時風速資料加以分析風的特性、技術以及
    經濟潛能。偉伯統計分布函數和每月的偉伯參數 k 和 c 用以決定風速的分布
    ,其中 41 < k < 3.16 與 5.56 < c < 7.90 m/s 的數值顯示大範圍之風速分
    布在所有季節中,且在九月中有最高的 c 值,二月中為最低。在五十公尺下
    的風功率密度範圍為 113.59 – 304.49 W/m2 。
    在與其他模型的比較分析後,以 RETScreen 軟體模擬的 23 MW 安裝容量的風
    力農場和西門子風力渦輪機組模型作為技術以及經濟評估。2.3 MW 額定容量
    機組的評估得到 27.9%的容量因子和 56,278 MWh 發電輸出。此建議的風力發
    噸。在沒有建廠補助下,估計一座風力農場使用 2.3 MW 風力渦輪額定容量能
    夠發電的最低成本為 0.13 US$/kWh。萊邦博高原具有使用高容量風力渦輪機
    Wind energy utilization has increasingly become attractive form of renewable energy in most
    developing countries. Swaziland is challenged by high electricity demand which cannot be met
    by current generation capacity. Renewable wind resources could be employed in electricity
    generation as part of sustainable development in the country. The identification of a suitable site
    as well as the assessment of that site prior to wind generation project is very essential in order to
    produce substantial amounts of power at minimum costs. This study is a site specific analysis to
    determine the feasibility of wind electricity generation in Lubombo plateau in Swaziland. The
    wind characteristics, technical and economic potential were analyzed using 30 months hourly wind
    speed data measured at 10, 20, 30, 40 and 50 m heights and vertical extrapolations were carried
    out to 80 m height. The wind distribution was determined using Weibull probability distribution
    function and the monthly Weibull parameters k and c are within the range 2.41 < k < 3.16 and
    5.56 < c < 7.90 m/s indicating wide spread of wind speeds in all seasons, with highest c values in
    September and lowest in February. The wind power density ranges between 113.59 – 304.49
    at 50 m.
    The technical and economic assessments were performed using the RETScreen software for a 23
    MW installed capacity hypothetical wind farm and the Siemens wind turbine models were selected
    after comparison with other models for analysis. The 2.3 MW rated capacity was evaluated with
    corresponding annual energy output was 56,278 MWh with 27.9% capacity factor (CF). The
    project is expected able to mitigate 6,455 tonnes of GHGs annually and a total of 118,776 tonnes
    over 20 years lifetime for the proposed wind power plant. The least cost of generating electricity
    is estimated at 0.13 US$/kWh considering a wind farm with 2.3 MW wind turbine capacities
    without capital subsidies. It was concluded that this area had a potential for the development of
    grid-connected wind electricity generation using high capacity wind turbines and the 2.3 MW wind
    turbines seemed to be more feasible for installation in Lubombo plateau with local site conditions.
    Subsidization of the wind project at minimum feed-in tariffs would play a very important role in
    its successful implementation
    Appears in Collections:[國際永續發展在職專班] 博碩士論文

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