斷路器是電力系統重要設備之一，在電網中具有控制與保護的雙重作用，其操作狀態直接影響電力系統的操作穩定性和供電可靠性。斷路器在電力系統中主要的角色是能可靠操作及保護系統，對系統進行正常斷電、解聯負載和清除故障等任務。隨著經濟發展斷路器在電力系統中的數量也越來越多，因此對於斷路器的維護管理也變成一個重要課題。
本論文提出一個整合智慧型電子裝置與智慧型方法於可靠度為中心之斷路器維護研究，目前已應用智慧型電子裝置建立一個斷路器狀態監測系統，監測系統中之遠端監控主機，可經由網路連結變電所設備端不同廠製之智慧型電子裝置，透過狀態監測系統蒐集斷路器維護參數相關資訊。將運轉中實際變電所斷路器現場的特性試驗資料、智慧型電子裝置監測資料及運轉維修資料，應用模糊集合理論、層級分析法和證據理論對斷路器進行狀態評估分析。另外蒐集變電所斷路器之重要影響因素，利用專家調查法來建立重要性因素權重計算，並對斷路器進行重要性評估分析。最後藉由斷路器狀態評估和重要性評估的結果進行可靠度為中心維護決策分析。上述決策分析資料可提供維護人員及管理人員對斷路器進行維護實施計畫之參考。

The circuit breaker (CB) is one of the most important equipment in power systems. CB serves as both control and protection equipment and its operating condition is critical to the stability and reliability of power systems. CB must operate reliably to protect power systems as well as to perform tasks such as normal interruption, load disconnection and fault clearing. Circuit breaker maintenance management has become an important topic nowadays as the number of CBs increase with economic growth.
Integrating intelligent electronic devices (IEDs) with intelligent approach to assess reliability-centered maintenance (RCM) of CB is proposed in this paper. A CB condition monitoring system using IEDs has been established in this work. IEDs from different manufacturers in a power substation are linked to the CB condition monitoring system which is built in a remote mainframe through an interconnected network to collect information such as the CB maintenance parameters. Fuzzy set theory (FST), analytical hierarchy process (AHP) and evidential reasoning (ER) are applied to assess the conditions of existing substation CBs by processing their preventive test data, IED monitoring data, operation data and maintenance data. In addition, major influence factors of the substation CBs are collected and processed using an expert investigation method to calculate the weights of the importance factors and to perform importance assessment of CBs. Finally, RCM decisions are made based on the results of CB condition assessment and importance assessment. The data and analysis results may provide valuable information for the maintenance personnel and the management department personnel to schedule CB maintenance planes.

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