本論文係分析風力感應發電機利用高壓直流傳輸線與市電系統併聯運轉時，整體系統之穩定度、動態與穩態特性等影響。在本論文中，係分別以單部與四部風力感應發電機為發電機組，經高壓直流傳輸線連接市電之架構作為研究模型，在三相平衡系統下採用交直軸等效電路模型，分別建立風、風渦輪機、感應發電機以及高壓直流傳輸線等之模型，並推導其數學模型來完成整體動態方程式，再利用特徵值來求出系統動態穩定度。在穩態方面，則分別對風速、市電端電壓、傳輸線的阻抗及整流器觸發角等量對系統特性之影響，做一詳細討論。在動態研究方面，完成風速變動對於本論文提出之架構的影響分析，並考慮發生干擾或故障時，可能對風力發電系統造成的影響做評估分析。

This thesis analyzes dynamic and steady-state performance of wind induction generators connected to a utility grid through HVDC transmission lines. Single wind induction generator and four wind induction generators are respectively connected to the utility grid through the HVDC transmission line for study. A d-q axis equivalent-circuit model is employed to establish the wind, wind turbine, induction generators, and HVDC transmission line to derive the complete dynamic equations of the studied system under three-phase balanced loading conditions. System eigenvalues are employed to determine the dynamic stability of the studied system. Steady-state performance of the studied system under different wind speeds, grid voltages, converter’s firing angles of HVDC line is examined. Dynamic characteristics of the studied system subject to variable wind speeds, disturbance conditions, and faulted conditions are also explored.

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