本論文旨在評估分散型電源在常閉環路配電饋線上之最大可併網量。分散型電源在常閉環路運轉於常態以及非常態情況下對併網點電壓變動之影響均予分析。分析結果發現在相同的電壓變動規範下，不同的運轉狀態有差異極大的最大可併網量，故無單一適切的評估方式可決定常閉環路配電饋線上之最大可併網量。因此，本論文提出一個新的策略用以決定分散型電源在常閉環路配電饋線上之適切最大可併網量。

This thesis assesses the possible maximum allowable capacity of distributed generation (DG) interconnected to a normally closed loop feeder. The impacts of DG on the voltage variation at point of common coupling (PCC) under normal and abnormal operating conditions were analyzed. Under the same voltage variation requirements, the maximum allowable interconnection capacities are quite different for various operating conditions. None of them are suitable for determining the maximum allowable interconnection capacity for a normally closed loop feeder. Therefore, a new strategy is proposed in this thesis to determine the maximum allowable capacity of DG interconnected to a normally closed loop feeder.

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