臺灣博碩士論文加值系統

鋼鐵廠的電弧爐產生電壓閃爍是電力品質污染最為嚴重之一，所以瞭解電弧爐的工作特性及電壓閃爍對電力系統的影響，就特別值得重視與研究。本論文首先探討電壓閃爍的各種現象，再瞭解各種不同電弧爐模型的理論根據、數學方法、適用範圍及電壓閃爍標準。
電壓閃爍的問題存在於世界各國的電力系統，因此各國都會訂定電壓閃爍的標準，又因為每一個國家對電壓閃爍的定義不盡相同，所以就有不同的方法來衡量電壓閃爍，而台灣電壓閃爍的標準是採用10Hz等值量。
本論文利用隨機負載潮流的觀念配合最小平方誤差法，再利用系統阻抗矩陣及網目分析，推導出一種解電壓閃爍電力潮流的方法，本論文稱為閃爍潮流法，此方法可快速且準確地求出電力系統的電壓閃爍值。
本論文所提出的閃爍潮流法，在經由軟體來模擬，找出一個適當的比例係數就可以得到△V10，以証實本文提出的靜態電壓閃爍法之可行性。至於實驗系統是分別以定容量和定功率，再依抽頭比與電感互相配合下，觀察出電壓閃爍的趨勢，並確定軟體模擬的結果。

Voltage flicker resulting from arc furnaces in the steel plants is shown to have a greater impact on the power quality. The investigation of the operation characteristics for the arc furnace and the impact of the arc furnace on the system are therefore very important. First, this thesis discusses the phenomena of voltage flicker. Then different models of the arc furnace are examined for understanding the theoretic basis mathematical methods, applicability and standard.
Because the problems of voltage flicker exist in the power systems, many utilities build up their voltage flicker standards which are described in this thesis. The standards of voltage flicker in the world are not the same; therefore, different methods are used to measure the voltage flicker. In this thesis, a method called flicker power flow method for solving voltage flicker power flow is developed based on stochastic load flow theory, least square mismatch method, systems impedances matrix, and mesh analysis.
The flicker power flow method can obtain the voltage flicker of power systems quickly and exactly. The flicker power flow method is verified through simulation and experimentation. Experimentation is disgned to observe the flicker trend with fixed short-circuit capacity and fixed power factor modes for supporting the simulation results.

第一章 緒論 1
1-1 研究背景 1
1-2 研究動機 1
1-3 文獻回顧 2
1-4 研究目標 4
1-5 進行步驟 4
1-6 本論文貢獻與優點 5
1-7 本論文架構 5
第二章 問題描述 7
2-1 電壓閃爍源 7
2-2 電弧爐負載 9
2-3 電壓閃爍潮流法 12
2-3-1最大虛功率變動法 12
2-3-2複阻抗法 16
2-3-3時域分析法 17
2-3-4李氏分析法 18
2-7 補償之方法 21
第三章 電壓閃爍補償方法論 27
3-1 定壓源電壓閃爍潮流 27
3-2 串聯補償 32
3-3 並聯補償 34
第四章 測試結果 35
4-1 電壓閃爍潮流分析 35
4-2 電壓閃爍潮流常數 36
4-2-1 週期性常數Kp 38
4-2-2 隨機性常數Ks 42
4-3 串聯補償 47
4-4 並聯補償 51
4-5 實驗驗證 56
4-2-1 硬體設備 57
4-2-1 量測結果 59
第五章 結論 99
參考文獻 101
附錄A 10HZ等值量 A-1

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