電力品質的優劣對於電力公司與用戶有極大的影響。為了避免因電力擾動所造成的損失，可架設改善設備以改善電力品質，而改善電力品質的首要步驟為利用電力品質記錄設備對電力系統進行偵測。本論文以數位訊號處理器為核心，製作一電力品質監測設備，並採用數種暫態觸發方式偵測波形以檢知暫態異常情況。模擬及測試結果顯示本設計在穩態環境下能有效進行電力量測，而在發生暫態現象時亦能正確偵測出暫態波形的發生。

Electric power utilities and end users are becoming increasingly concerned about the quality of power supply. To reduce the losses caused by power service disturbances, mitigation devices are available for improving the power quality. The first step in the power quality improvement is to monitor the system behavior by using some Electronic recording devices. A design and implementation of a digital signal processor based power quality monitoring device is presented in this thesis. Several event-triggering methods are studied and implemented to detect system disturbances. Simulation and test results indicate that the proposed design can meet the requirements for power measurements and transient event recording during steady and transient states.

中文摘要……………………………………………………………I
英文摘要……………………………………………………………II
目錄…………………………………………………………………III
圖目錄………………………………………………………………V
表目錄………………………………………………………………VII
第一章 緒論…………………………………………………………1
第二章 電力品質問題及電力品質監測設備的發展………………3
2-1 電力品質分類 ………………………………3
2-1-1 穩態變動 ………………………………4
2-1-2 長時間變動 ………………………………10
2-1-3 短時間變動 ………………………………11
2-1-4 暫態過電壓 ………………………………13
2-2 電力品質監測設備的發展…………………………16
第三章 電力參數計算與暫態觸發程式設計…………………21
3-1 穩態電力參數的計算 ………………………………21
3-2 偵測暫態現象觸發方式…………………………23
3-2-1 過/欠有效值位準觸發…………………23
3-2-2 取樣值上緣/下緣邊界觸發…………24
3-2-3 波形窗觸發………………………………27
3-2-4 變化率檢測觸發…………………………29
3-2-5 頻域檢測觸發……………………………31
3-2-6 其他觸發方式……………………………33
第四章 電力品質監測設備設計……………………36
4-1 硬體部分…………………………………36
4-1-1 波形擷取電路……………………………37
4-1-2 共用記憶體電路…………………………47
4-1-3 LCD顯示及通訊電路…………………...49
4-1-4 單板獨立作業(Bootloader)的設計……52
4-2 軟體部分…………………………………58
4-2-1 程式設計流程……………………………58
4-2-2 暫態觸發副程式設計 ……………………67
第五章 測試結果……………………………………76
5-1 電力參數測試……………………………76
5-2 暫態觸發測試……………………………77
第六章 結論與未來研究方向………………………84
參考文獻 ……………………………………………86
附錄一 擷取及運算程式(含Bootloader程式)………………………89
附錄二 顯示及輸出程式……………………………………………..95

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