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題 名 | 水力發電系統壽命分佈及故障診斷分析=Hydro-Power Generator System Failure Processes Analysis and Fault Diagnosis |
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作 者 | 鐘朝恭; 呂守陞; | 書刊名 | 農業工程學報 |
卷 期 | 58:3 2012.09[民101.09] |
頁 次 | 頁1-15 |
分類號 | 448.15 |
關鍵詞 | 檢核表; 韋伯分佈; 多狀態失誤樹; 失誤樹分析; Check-lisl; Weibull Di stribulion; Mulli-state falllt-tree; Fault-tree analysis; |
語 文 | 中文(Chinese) |
中文摘要 | 目前水庫各項設施故障診斷多以時間為基礎考量,並配合檢核表進行評估,亦 即依系統設備可使用壽命,直接以週、月、季或年作為週期進行檢查維修,由於該 等維修方式未考慮到系統故障型態及構件在不同環境及操作下之脆弱度,因此其經 濟成本與安全性受到工程人員質疑,無法達到客觀性判斷、降低故障機率、經濟快 速修復及預知維修之目標。有鑑於此,本研究首先利用韋伯分佈(Weibull distribution) 求其壽命及相關可靠性函數,同時藉由具有實際經驗之專家學者建構區分為正常、 故障小於8 小時及大於8 小時等多狀態失誤樹(multi-state Fault Tree)架構,接著利用 多狀態失誤樹分析(Fault Tree Analysis, FTA)進行系統各事件故障診斷與評估,並以 石門水庫供應民生及農業用水之三部水力發電系統作為分析對象,經比對多狀態失 誤樹分析計算頂事件故障率與歷史統計相符,且與韋伯分析結果故障率趨勢相同, 顯示本研究所建構完成多狀態失誤樹具有可用性與合理性,適合日後作為水力發電 系統脆弱環節分析模型,以作到預防維護及減少故障發生機率之需求。 |
英文摘要 | In a general way, fault diagnosis of hydro-power generator systems relies mostly on check-list evaluation and based on time period. The results and qualities of evaluation are limited by experience and ability of the evaluators, which may not achieve the goal of systematic assessment in a consistent manner. In order to overcome the limitation of the traditional approach, this research develops a fault diagnosis and evaluation for hydropower generator system by utilizing multi-state Fault-Tree Analysis (FTA) technique, in conjunction with Weibull-distribution which is used to model both increasing and decreasing failure rates. The proposed system has been used to analyze and verify against three hydro-power generator systems at Shihmen reservoir currently in operation. It was found that the failure pattern of three systems all follows Weibull-distribution. Furthermore, the fault trend of the proposed FTA analysis is consistent to that from historical data analysis and Weibull Distribution. This indicates that multi-state Fault-Tree (FT) is reasonable and practical to the fault diagnosis of the hydro-power generator systems. Based upon the analysis of FTA by inputting prior information of the hydro-power systems, the probabilities of fault occurrences and significant factors are effectively computed and analyzed. Based upon the output of FTA, more effective preventive maintenance strategies can be established. |
本系統中英文摘要資訊取自各篇刊載內容。