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研究生:王奕捷
研究生(外文):Yi-Chieh Wang
論文名稱:低壓線路串聯電弧故障時域及頻域分析與檢測
論文名稱(外文):Time Domain-Frequency Domain Analysis and Detection of Serial Arc-Fault on Low Voltage Power Circuit
指導教授:吳啟瑞吳啟瑞引用關係
指導教授(外文):Chi-Jui Wu
口試委員:吳啟瑞
口試日期:2012-06-01
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:2012
畢業學年度:100
語文別:中文
論文頁數:148
中文關鍵詞:火災低壓配線電弧故障電弧故障檢測時頻分析
外文關鍵詞:FireLow-Voltage Distribution LineArc-FaultArc-Fault DetectionTime-Frequency Analysis
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為維護用電安全,現今的工廠與居家之低壓配電線路中都裝設過電流及過載保護裝置,於短路及過載時切離電源。有些特定支路還必須安裝漏電斷路器,避免人員感電。當這些保護裝置正確使用時,似乎不需要其它的保護裝置。然而,根據國外調查指出,有些住宅火災發生原因,懷疑是因為電弧故障所引起。電弧故障斷路器(Arc-Fault Circuit Interrupter-AFCI)是一種偵測線路中電弧故障發生的保護裝置,它透過對電弧特性判別來偵測串聯及並聯電弧,在電弧的熱能引起火災前儘早切離電源。本論文針對幾種不同特性的負載,進行串聯電弧故障檢測,經由電弧故障檢測平台收集串聯電弧數據,將實驗數據與相關文獻進行電弧的時頻特性比對及驗證,接著運用時頻分析技巧歸納出六項檢測規則,再使用這六項檢測規則組合出三種檢測方法。最後使用三種檢測方法應用於實驗數據之電弧故障檢測並與商用AFCI的動作結果進行比較。三種檢測方法的確能判斷發生串聯電弧故障,且誤動作的機率不高。本論文找出的檢測方法未來如能開發使用,應可在電弧的熱能引起火災前儘早切離電源,降低火災的發生率。
For the safe use of electric power, it needs to detect the occurring of electric arc faults on the low voltage power circuits and switch off the power source before the occurring of fires. However, many oversea examples reveal the facts that a number of home fires are caused by electric arc faults. The arc-fault circuit interrupter (AFCI) is a device which can detect the occurring of electric arc in the low voltage circuits, and then it can switch off the power source before the occurring of fire caused by series or parallel electric arc faults. In the paper, it is to investigate series arc fault detection of circuits feeding several characteristics of the load. The test data are collected through the arc fault testing platform. The series arc fault will be verified and evaluated the time-frequency characteristics by using the experimental data and compared with relative literature. By combining the time domain-frequency domain techniques, it sums up six detection rules. Then three detecting methods are developed to suppose detecting approaches. Finally, the experimental data with serial arc faults are used to test the detecting methods and compare with the commercial devices. The purposed detecting methods can effectively detect the occurring of series arc faults, and the probability of malfunction is low.
摘要 i
Abstract ii
誌謝 iii
目錄 iv
圖索引 vii
表索引 xviii
第一章 緒論 1
1.1 研究背景 1
1.2文獻回顧 3
1.3 研究內容 4
1.4 章節敘述 5
第二章 電弧故障與電弧故障斷路器 6
2.1 前言 6
2.2 電弧特性與電弧故障之分類 6
2.3 電弧故障斷路器 8
2.4 小結 10
第三章 串聯電弧故障實驗與實驗結果 11
3.1 前言 11
3.2 實驗設備 12
3.2.1 實驗平台 12
3.2.2 量測儀器 13
3.2.3 電弧產生機台 13
3.2.4 電弧故障斷路器 14
3.3 測試方法 15
3.3.1 負載特性測試 15
3.3.2 正常電弧測試 19
3.3.3 串聯電弧測試 23
3.4 小結 29
第四章 電弧故障電流特性分析與檢測方法 30
4.1 前言 30
4.2 時域特性 30
4.3 頻域特性 33
4.4 電流濾波檢測分析 38
4.5 小波高頻檢測分析 43
4.5.1 連續小波轉換(CWT) 43
4.5.2 離散小波轉換(DWT) 44
4.5.3 離散小波轉換於濾波器組的實現 44
4.5.4 多層解析於諧波訊號分析 46
4.5.5 多層解析於串聯電弧電流分析 49
4.6 檢測規則與檢測方法 55
4.6.1 檢測規則 55
4.6.2 檢測方法 58
4.7 小結 63
第五章 串聯電弧故障檢測結果 65
5.1 前言 65
5.2 吹風機 65
5.3 日光燈+電阻 94
5.4 電鍋+電阻 110
5.5 混合負載 127
5.6 小結 140
第六章 結論與未來研究方向 142
6.1 結論 142
6.2 未來研究方向 142
參考文獻 144
作者簡介 148
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