臺灣博碩士論文加值系統

臺灣電力能源的供給隨著環保意識的抬頭及國外核電廠曾發生因地震海嘯所引起之安全性考量，因此國內致力於再生能源的發展，藉由國家能源政策之推動下，再生能源占比將預計於2025年提升至20%，因此，再生能源已然成為將來台灣電力發展的主流。本論文研究探討因應再生能源加入電網中，分析新加入電網之大量風機風力發電併入電網中觀察並分析大量風機的併入對整體系統的暫態穩定度影響。
本論文所使用的風機模型為全功率換流器發電機(Full-Scale Frequency Converter Generator)，透過模擬能得出此種風機擁有兩種特性，其一特性為，此種類風機是透過換流器連結至電網，因此不用考慮其同步問題，故併入此種風機的電力系統轉子角度會與電壓、頻率變化率以及實功率產生偏差，且隨併入風機數量的增加其偏差會更加明顯。其二特性為，透過上述兩項特性加以研究，將系統細分成不同併入量，並且考慮電力系統中之匯流排進行故障及觀察，得出當其併入點週遭匯流排發生三相短路故障時其整體匯流排臨界清除時間會得到上升，且其臨界清除時間也會隨併入風機數量越多，其臨界清除時間也會上升。不過當故障匯流排遠離併入點時其臨界清除時間會下降，且其臨界清除時間也會隨併入數量越多，其臨界清除時間也會下降，而本論文透過暫態穩定度分析中找出其併入量與臨界清除時間的關係使其透過本論文分析中貢獻出加入再生能源併入電網中之臨界清除時間對既有之電網之臨界清除時間所具有之影響關係，可做為因應再生能源加入電網之暫態穩定度之成效結果。

For Taiwan energy supply, renewable power development is connected to country energy strategy due to environmental protection awareness and the real case of nuclear power plant troubles in earthquake and tsunami disaster. Taiwan energy proposal identifies that renewable power will rise to 20% of total power percentages in 2025, so renewable power will be one of important energy in Taiwan grid. The thesis studies of renewable power to connect to the power grid with several wind power generators for transient stability.
For this paper about study objects of wind power machines are Full-Scale Frequency Converter Generators. In the analysis of the wind power generator, this type of wind power generator has two characteristics. One is using the converter to link with grid, so the synchronous is not the priority concern point. The injection of wind power machines will have the deviation based on the rotor angle of voltage, frequency and real power. The other is to concern about Critical Clearance Time that system divides into scenarios with different capacity to inject to the grid. Meanwhile, it should concern about Busbar faulty situations and monitor faulty area to find out the criteria for Critical Clearance Time that Critical Clearance Time will rise when system suffers from Busbar fault in three phases shorts. For Critical Clearance Time, it is affected by accumulated wind power machines. The more wind turbines joining system do, the more Critical Clearance Time grid will get. When Busbar fault is far away wind power injection point, Critical Clearance Time will decline in case of several wind power machines injection. For this paper study, it defines the relation between Critical Clearance Time and transient stability by wind power injection as the grid outcome reference in renewable power connection.

摘要 I
Abstract II
目次 III
圖目次 V
表目次 IX
第一章 緒論 1
1.1 研究動機與背景 1
1.2 文獻回顧 2
1.3 研究方法與工具 4
1.4 章節內容 5
第二章 暫態穩定度分析理論與方法 6
2.1 電力系統穩定度之分類與定義 6
2.2 電力系統之暫態穩定分析 8
2.3 等面積法則 13
第三章 風力發電機介紹 17
3.1 再生能源簡介 17
3.2 風力發電機介紹 17
3.2.1 鼠籠式感應發電機介紹 19
3.2.2 繞線式感應發電機介紹 20
3.2.3 雙饋式感應發電機介紹 21
3.2.4 全功率換流器發電機介紹 22
3.2.5全功率換流器發電機動態模型 24
第四章 案例分析 26
4.1 研究系統架構 26
4.2 情境案例一：比較系統有無入風機之暫態分析 36
4.2.1 尖載有無風機臨界清除間比較 36
4.2.1.1尖載無風機之情境分析 36
Case1.北部接近預計併入風機匯流排週遭：#1500 37
Case2.北部遠離預計併入風機匯流排週遭：#1600 41
Case3.中部接近預計併入風機匯流排週遭：#2200 45
Case4.中部遠離預計併入風機匯流排週遭：#530 49
Case5.南部接近預計併入風機匯流排週遭：#1000 53
Case6.南部遠離預計併入風機匯流排週遭：#2930 57
4.2.1.2尖載有風機之情境分析 61
Case1.北部接近併入風機匯流排週遭：#1500 62
Case2.北部遠離併入風機匯流排週遭：#1600 67
Case3.中部接近併入風機匯流排週遭：#2200 72
Case4.中部遠離併入風機匯流排週遭：#350 77
Case5.南部接近併入風機匯流排週遭：#1000 82
Case6.南部遠離併入風機匯流排週遭：#2930 87
4.2.2 輕載有無風機臨界清除間比較 94
4.2.2.1輕載有無風機情境分析 94
4.2.3 尖、輕載有無風機臨界清除間分析 95
4.3 情境案例二：比較風機併入量對系統之暫態分析 96
4.3.1 風機併入量設置與臨界清除時間 96
Case1. 併接量為0時系統故障匯流排之臨界清除時間 97
Case2. 併接量為300時系統故障匯流排之臨界清除時間 98
Case3. 併接量為605時系統故障匯流排之臨界清除時間 99
Case4. 併接量為1000時系統故障匯流排之臨界清除時間 100
Case5. 併接量為1303時系統故障匯流排之臨界清除時間 101
Case6. 併接量為1601時系統故障匯流排之臨界清除時間 102
Case7. 併接量為2257時系統故障匯流排之臨界清除時間 103
第五章 結論 108
5.1 總結 108
5.1 未來研究方向 108

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