臺灣博碩士論文加值系統

本論文旨在設計一款變壓器分接頭輔助系統預警設備，其可在電壓調整器異常時，加以過濾異常信號及發出警報之功能。由於有載分接頭切換器之輸入信號異常時，將會造成變壓器二次側電壓異常上升或下降，因此本論文利用切換器之上升與下降次數作為補助判別，並且研製一套具有異常信號預警功能之變壓器分接頭輔助設備。而由實測結果可知本論文所提之方法及所完成之系統確已具有偵測雜訊、過濾雜訊及系統預警之功能，研究成果可提供電力工業之應用參考。

This thesis proposes alarm equipment for auxiliary system of on-load tap changer of transformers. The proposed system is capable of filtering the abnormal signal and delivering the alarming signal. This design is motivated because the occurrence of abnormal operation of on-load tap changer often results in the abnormal increment or decrement of voltage at the secondary side of transformers. Therefore, the thesis is devoted to designing the alarm equipment for auxiliary system of on-load tap changer based on the number of times of signal changes. From the test result, it was found that the method proposed in this thesis along with the developed system come with the functions of noise detection, noise filtering, and system forewarning. The outcome gained from these tests serve as beneficial references for electric power applications.

中文摘要 I
英文摘要 II
誌謝 IV
目錄 V
圖目錄 VIII
第一章　緒論 1
1-1 研究背景及動機 1
1-2 研究目的與方法 2
1-3 論文大綱 4
第二章 變壓器分接頭輔助系統相關技術介紹 5
2-1 前言 5
2-2 匯流排電壓異常案例 5
2-2-1 自動電壓調整器故障 6
2-2-2 比壓器故障 6
2-2-3 電力儀表校正時輸出異常 7
2-3 現有匯流排電壓預警方式 8
2-4 變壓器分接頭輔助系統預警設備之演化 10
2-4-1 初期變壓器分接頭輔助系統預警設備 11
2-4-2 第二時期變壓器分接頭輔助系統預警設備 15
2-4-3 本論文提出之變壓器分接頭輔助系統預警設備 18
2-5 本章結論 20
第三章 硬體電路設計與研製 21
3-1 前言 21
3-2 微控制器架構 22
3-3 硬體電路架構 24
3-3-1 主電源電路 25
3-3-2 微控制器電路 25
3-3-3 通訊電路 26
3-3-4 顯示模式與參數設定平台 27
3-4 信號模擬平台電路 29
第四章 測試結果 32
4-1 前言 32
4-2 情境一 33
4-2-1 系統過濾雜訊信號原理 34
4-2-2 雜訊信號測試 35
4-2-2-1 上升輸入信號有雜訊信號測試 35
4-2-2-2 下降輸入信號有雜訊信號測試測試 36
4-2-2-3 上升與下降輸入信號有雜訊信號測試測試 36
4-2-2-4 上升與下降輸入無效信號判斷功能測試 37
4-3 情境二 40
4-3-1 系統過濾彈跳信號原理 40
4-3-2 彈跳信號測試 41
4-3-2-1 上升輸入信號內有彈跳現象測試 41
4-3-2-2 下降輸入信號內有彈跳現象測試 43
4-3-2-3 上升輸入信號內有彈跳現象與雜訊測試 44
4-3-2-4 下降輸入信號內有彈跳現象與雜訊測試 45
4-4 情境三 46
4-4-1 交替信號測試 47
4-4-1-1 上升輸入信號與下降輸入信號輪流交替信號測試 48
4-4-1-2 上升輸入連續信號與下降輸入輪流交換信號測試 49
4-4-1-3 上升輸入輪流交換信號與下降輸入連續信號測試 50
4-5 情境四 51
4-5-1 系統防止分接頭異常動作信號原理 51
4-5-2 連續信號測試 52
4-5-2-1 上升輸入連續信號測試 53
4-5-2-2 下降輸入連續信號測試測試 54
4-6 本章結論 55
第五章 結論與建議 56
5-1 結論 56
5-2 未來發展與展望 56
參考文獻 58

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