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研究生： 吳清科
Ching-Ko Wu
論文名稱： 複循環機組維修計畫之訂定及離線清洗效益的評估
Maintenance Plan of CCPP Set up and off-line Wash Evaluation
指導教授： 吳翼貽
Ye-Ee Wu
口試委員: 廖崑亮
none
楊條和
Tyau-Her Young
學位類別： 碩士
Master
系所名稱： 工程學院 - 機械工程系
Department of Mechanical Engineering
論文出版年： 2009
畢業學年度： 97
語文別： 中文
論文頁數： 105
中文關鍵詞： 維修計畫 、複循環機組電廠 、離線清洗
外文關鍵詞： Maintenance Plan, CCPP, off-line wash
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  •  上一筆

    • 複循環電廠(Combine Cycle Power Plant,CCPP)係結合兩種熱力循環系統機組的電廠，包括燃氣輪機及蒸汽輪機兩種熱力循環系統。由於複循環機組具有較高的熱循環效率，建廠時程較短，溫室氣體排放較少，燃料種類富彈性，起機時間短等優點近年來已漸漸運用於中載，甚至於基載電廠。
    維修計畫的訂定對發電廠而言是一件非常重要的事，好的維修計畫除可提升機組的可用率，降低機組故障風險，增加設備使用壽命外，尚可提高機組效率，降低機組運轉成本。維修計畫不是一成不變的，維修計畫必須依各地狀況有所調整，維修計畫更必須應維修資訊的回饋加以修正。也就是說好的整體維修計畫是一份活的維修計畫，計畫會隨著時間一再演繹進化的維修計畫。
    本研究除介紹如何建立一複循環組的維修計畫外，針對外在環境因素如何對維修計畫產生影響進行詳細探討。並以海湖複循環發電機組壓縮機離線清洗為例，深入探討外界條件改變，對複循環發電機組壓縮機離線清洗的影響。研究得知環境因素對維修計畫的最大影響為維修時程的衝擊及維修頻率的改變。經由繪製出力衰退曲線，納入當時的燃料價格、電價及其他清洗成本，可求得最大的清洗利益。

    Combined Cycle Power Plant (CCPP) is a power plant having two thermal systems operated at the same time. One of them is a gas turbine system, and the other is a steam turbine system. Due to the combined cycle has the advantages of higher heat efficiency, shorter constructing periods, less green house gas exhaust, more fuel supply sources and shorter starting time, it has been gradually adopted as mid-load power plant or as base-load power plant recently.
    Maintenance plan is essential to a healthy and beneficial operation of Combine Cycle Power Plant. Not only increasing the availability of the plant, a good maintenance plan can also raise up the plant efficiency and reducing the malfunction risk as well as drop down the operation cost. It shall be a flexible one, and should be modified and adjusted in accordance with the local environmental conditions. According to the feedback of maintenance information it has to be amended, and be evoluted again and again with the time.
    This study not only introduce the process to establish a combined cycle maintenance plan, but also investigates the influence of the environmental factors to the maintenance plan in details. Furthemore, the off-line wash of Hai-Fu power plant is taken as an example to study the effects of external conditions change to the off-line compressor wash schedule. From the results of study we know the maximum impacts of environmental factors for maintenance plan are maintenance schedule and maintenance interval. By using the power decline curve and consider the fuel price, power fee and other washing cost the benefit of off-line compressor wash can be maximized.

    目錄 第一章 緒論..........................................................1 1.1.複循環機組簡介..........................................................1 1.1.1.燃氣輪機系統..........................................................1 1.1.2.蒸汽輪機系統..........................................................2 1.2.文獻回顧..........................................................3 1.3.研究動機..........................................................5 1.4.研究方法與目的..........................................................5 第二章 複循環機組維修計畫..........................................................6 2.1.複循環機組的維修計畫..........................................................6 2.1.1.維修策略..........................................................6 2.1.2.人員組織訂定..........................................................8 2.1.3.建立維修項目..........................................................9 2.1.4.維修時程規劃..........................................................13 2.1.5.維修成本控制..........................................................13 2.2.預知保養..........................................................15 2.2.1.轉動設備振動監測..........................................................15 2.2.2.水蒸汽系統洩漏量測試..........................................................16 2.2.3.真空度測試..........................................................17 2.2.4.排氣溫度檢測..........................................................19 2.2.5.廢氣排放監測..........................................................19 2.2.6.主蒸汽溫度測試..........................................................20 2.2.7.閥門洩漏測試..........................................................20 2.2.8.紅外線影像檢測..........................................................21 2.2.9.發電機定子絕緣性能監測..........................................................22 2.3.複循環機組主要維修工作內容..........................................................22 2.3.1.法定維護項目..........................................................22 2.3.2.發電機組的各級檢修..........................................................22 2.3.3.機組大修..........................................................26 2.3.4.一般的維護項目..........................................................26 2.3.5.備品採購..........................................................31 2.3.6.電腦維修管理系統..........................................................32 第三章 環境因素對維修計畫的影響..........................................................33 3.1.環境因素..........................................................33 3.2.維修時程的衝擊..........................................................35 3.2.1.氣溫對維修排程的影響..........................................................35 3.2.2.天候因素對室外維護工作的影響..........................................................39 3.2.3.天氣因素對特殊材料焊接工作的影響..........................................................41 3.2.4.海象環境對海水管線維護的影響..........................................................41 3.3.維修頻率的影響..........................................................42 3.3.1.氣候因素對除銹油漆工程的影響..........................................................42 3.3.2.環境因素對滑油更換頻率的影響..........................................................43 3.3.3.環境因素與空氣過濾器更換..........................................................43 3.3.4.環境因素與天然氣過濾器的更換..........................................................45 3.3.5.海水水質與海水泵的維修..........................................................45 3.3.6.輸配線維護的影響..........................................................46 3.3.7.燃氣輪機離線清洗頻率..........................................................49 第四章 離線清洗的效益評估..........................................................50 4.1.海湖電廠簡介..........................................................50 4.2.壓縮機清洗方式..........................................................51 4.2.1.線上清洗..........................................................51 4.2.2.離線清洗..........................................................52 4.2.3.離線清洗的步驟..........................................................53 4.3.清洗的頻率..........................................................56 4.4.壓縮機的清洗成本..........................................................56 4.5.海湖電廠離線清洗效益之評估..........................................................57 第五章 結論..........................................................59 附錄一..........................................................62 附錄二..........................................................71 附錄三..........................................................88

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