三相式SF6之氣體絕緣負載啟斷開關 (Load Break Switch, LBS)絕緣狀態良否將直接影響民生用電品質，因此本文實驗對象為廠商特製3具彼此不同之單一典型缺陷的簡易型LBS，以台灣科技大學實驗室高壓設備將電壓以步階方式提升至50kV，再使用本實驗室自行設計之局部放電量測系統量測得到局部放電訊號，其局部放電資料進行訊號濾波、化簡後，利用數種統計方法將104種放電參量萃取出來，最後倣效雙特徵演進的轉折方式，此3種瑕疵分別選取2種特徵參量，最後歸納出3組雙特徵參量，以提供使用者作瑕疵類別判讀與絕緣狀態評估之依據，進而有效防範設備故障造成之經濟損失。

The situation of insulating status for three-phase SF6 gas insulated load break switch will affect the electrical quality of people’s livelihood immediately. Therefore, the experimental subjects are three simple load break switches that each of them with single defect made by manufactures in this thesis. Under increasing voltage step by step into 50kV by using National Taiwan University of Science and Technology’s high voltage equipment and using self-designed partial discharge measurement device to obtain partial discharge signal. The partial discharge signal can extract 104 features by using statistical method after filtering and simplification. At last, this thesis simulating the dual feature evolution with its turning situation. All three types of defects will find out their own two features. Finally generalize them into three groups of features to provide users with defect recognition and insulation condition assessment, thus can prevent the economic losses caused by equipment failure.

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