本研究藉由自行開發之弧光分析程式來進行配電盤弧光保護與危險等級分析，主要目的在於探討個人安全與設備保護。個人安全方面以配電盤為研究對象，透過IEEE 1584與NFPA 70E之建議公式，進行弧光電流、弧光能量與弧光危險距離模擬計算，依據NFPA 70E危險等級的規定，預測其危險等級及評估個人保護裝備的要求，以確保其工作安全。設備保護方面藉由上述之弧光分析程式進行弧光故障分析，進一步針對配電盤探討不同的保護方法，比較不同保護方法的特性與效益，建立弧光保護參考準則。傳統過電流保護由於延遲時間特性，故障清除時間較長，不適合用於弧光故障保護；應用弧光保護系統保護可將故障清除時間限制在57~87ms以內；若應用弧光消除系統保護更可將故障清除時間限制在2ms，將弧光事故降至最低。

This thesis is focused on the arcing fault protection and hazard analysis for panelboards by the own develops arcing fault analysis program. Two main topics are extensively studied in this thesis. Based on IEEE 1584 and NFPA 70E standard, a spread sheet is establish to estimate the arcing fault current, incident energy and flash-protection boundary for the panelboards. The results are used for predicting the hazard class and evaluating the personal protective equipment (PPE) required by NFPA 70E to ensure personal safety in the working area. The other issue is equipment protection. With the estimated arcing fault data from the arcing fault analysis program, the various protection schemes are commonly discussed for the panelboards. Furthermore, the characteristics of various protection methods are also reviewed. If arcing fault protection rely on the overcurrent device, the coordination requirements result in longer tripping time. It’s not appropriate for arcing fault protections. Once the arc protection systems are introduced, the fault cleaning time will be limited within 57-87ms. Moreover, if arc eliminator systems are implemented, the fault cleaning time can be further controlled in 2ms and the arcing fault hazards hereupon minimized.

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