由於原油飆漲以及傳統石化能源之嚴重污染與逐漸耗盡日益嚴重，提升再生能源之利用乃成為目前重要之任務。為了獲取更多風能，對於不同風場安裝適當的風力機更形重要。目前商用風力發電機在容量及機鼻高度方面皆有不同，即使風力發電機容量相同其機鼻高度也未必相同。本論文以韋伯分佈函數為基礎，以容量因數、正規化平均功率與該二數之乘積，將其應用在不同機鼻高度及額定風速下，俾決定適當風力發電機之容量。本論文亦以瑞拉函數推導風力機之容量因數公式，再與韋伯分佈函數比較分析風力機容量因數和成對模式。從觀察目前已安裝在台灣之五個風場之風力發電機組來看，韋伯分佈函數中的地形參數和比例參數加上風力機容量，對於選擇風力發電機安裝在不同地點都是非常重要，尤其比例參數是影響風場好壞之重要關鍵。本論文亦採用四種成本分析方法，包含簡易回收年限、單位能源成本、貼現現金流以及生命周期成本等，研究在不同台灣風場安裝不同容量之風力機及與不同高度的機鼻進行比較，並歸納出影響風力再生能源成本之重要因素。
本論文在附註以目前商業風場之風機運轉數據以及計算機模擬結果，提供穩態差異分析，透過比較結果建立風機及風場模型，並模擬干擾狀況下之特性，並以計算機模擬限流電抗器和主變壓器之負載匝比調變，對整個風機及風場之電力系統進行穩態及暫態的模擬。

Since the price of international petroleum is continuously increasing and severe pollution and gradual exhaustion of traditional fossil resources arise, the research and development the renewable-energy resources become an important topic recently. In order to capture more wind energy from wind, the selection of suitable wind turbine generators (WTGs) for different wind farms (WFs) is an important task. Currently, commercial WTGs generally have different values of hub height and rated capacity, even under the same rated capacity. This dissertation presents a novel approach based on Weibull distribution function to determine the capacity of WTGs using capacity factor (CF), normalized average power (PN), and the product of CF and PN under different values of hub height and rated wind speed. Rayleigh distribution function is also used to derive the equations for CF and pairing performance (PP), and both CF and PP results using Weibull and Rayleigh distribution functions are compared. The simulation results of WTGs for five WFs in Taiwan show that suitable values for both shape parameter and scale parameters of Weibull distribution as well as wind turbine capacity are all very important for selecting WFs of installing WTGs. The scale parameter of Weibull distribution can be used to determine whether a WF is good or not.
This dissertation, in Appendix, also employs four existing cost analysis methods such simple payback period, cost of energy (COE), discounted cash flow (DCF), life-cycle costing (LCC) to study different values of capacity and hub height of WTGs that have been installed in WFs of Taiwan. Important factors affecting wind cost of energy in comparison with economic results using the proposed economic-analysis methods for different WFs are also presented.
Steady-state performance analysis of a commercial WF in Taiwan through field measurement results and computer simulations is also performed. Through comparing field measured results, this dissertation establishes a simulation model to simulate and analyze the steady-state characteristics of the studied WF under disturbance conditions. Steady-state results and transient performance of variable current-limit reactors (CLRs) and adjusting load tap changers (LTCs) of main transformer of a commercial WF in Taiwan are also carried out.

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