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研究生:吳壯為
論文名稱:電力品質分析技術與軟體設計
論文名稱(外文):Analysis Technique and Software Design for Power Quality
指導教授:吳啟瑞吳啟瑞引用關係
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:電機工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
論文頁數:132
中文關鍵詞:電力品質電壓閃爍諧波軟體
外文關鍵詞:power qualityvoltage flickerharmonicsoftware
相關次數:
  • 被引用被引用:2
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  • 收藏至我的研究室書目清單書目收藏:1
電力品質監測是進行相關管制與改善工作的首要步驟,因此如何建立有效而正確的數據分析技術,應是相當重要的。電力品質污染因素相當廣泛,如非線性設備所產生的諧波,負載變動劇烈時所造成電壓閃爍,以及三相電壓不平衡、電壓突降等。本研究即是以數位訊號處理技術為基礎,探討電力品質評估數量的演算方式,包括以派克轉換計算有效電力、無效電力、視在電力等基本電力量;利用平均週波法等方式評估單位時間內諧波大小以及不同解調方式對於電壓閃爍量計算結果的影響等;同時,應用小波轉換的方式抑低瞬時波形紀錄資料的儲存空間。本文各項研究除了以測試訊號做分析外,也利用現場實測資料做交叉驗證,以期各項研究皆能具有相當之實用價值。最後,結合各項計算技術,實際應用於多目標視窗化分析軟體的設計與實現。
The primary step in power quality regulation and improvement is system monitoring. Hence, it is important to establish a complete and perfect numerical analysis method . The cause of power quality pollution is extensive, such as harmonic distortions generated by non-linear load, voltage flickers resulting from the fluctuation loads, and three phase voltage unbalance, voltage sag, etc. Based on the digital signal processing technology, this thesis discusses the calculation algorithm of power quality quantities, which includes using Park’s transform to calculate basic power quantities that is active power, reactive power and complex power; estimating harmonics by average cycle method and analyzing the diversity of different demodulation methods. Furthermore, we use wavelet transform method to compress instantaneous waveform data. In order to exalt its practical application, this thesis uses not only test signals, but also field data for cross-validation. Finally, the combination of each calculation methods is used to design and develop a multi-objective Window-oriented analysis software.
摘要………………………………………………………………………i
致謝………………………………………………………………………iii
目錄………………………………………………………………………iv
圖表索引…………………………………………………………………vi
第一章 緒論………………………………………………………………1
1.1 研究動機與背景…………………………………………………1
1.2 研究目的…………………………………………………………3
1.3章節概述…………………………………………………………3
第二章 電力品質介紹……………………………………………………5
2.1 電力品質簡介……………………………………………………5
2.2 電力數量相關之定義與簡介……………………………………6
2.3 不平衡定義………………………………………………………10
2.4 諧波簡介…………………………………………………………12
2.5 電壓閃爍簡介……………………………………………………17
第三章 基本電力數量…………………………………………………21
3.1 訊號前級處理技術與應用………………………………………21
3.2 派克轉換技術簡介與電力量計算之應用………………………29
第四章 諧波分析與不平衡率…………………………………………35
4.1 離散傅立葉轉換…………………………………………………35
4.2 諧波分量計算……………………………………………………41
4.3 不平衡率計算……………………………………………………49
第五章 電壓閃爍運算分析……………………………………………51
5.1 基本運算原理…………………………………………………51
5.2 運算分析方式比較………………………………………………56
第六章 小波轉換簡介與應用…………………………………………71
6.1小波轉換簡介……………………………………………………71
6.2 瞬時波形資料壓縮處理技術……………………………………79
第七章電力品質量測軟體………………………………………………93
7.1 程式基本架構與運算流程………………………………………93
7.1.1 通道監測軟體程式……………………………………………95
7.1.2 電力量計算程式流程………………………………………96
7.1.3 不平衡率程式計算流程……………………………………96
7.1.4 快速傅立葉轉換軟體程式………………………………100
7.1.5 諧波分析軟體程式………………………………………104
7.1.6 電壓閃爍分析軟體程式…………………………………104
7.1.7離散小波轉換程式計算流程……………………………105
7.1.8資料壓縮軟體程式……………………………………106
7.2 量測系統設計…………………………………………………111
7.3 量測系統應用與各項操作功能說明…………………………115
第八章 結論……………………………………………………………122
8.1 總結……………………………………………………………122
8.2 未來研究方向與建議…………………………………………123
參考文獻………………………………………………………………124
作者簡介………………………………………………………………132
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