局部放電檢測用以檢測電力設備內部絕緣材料劣化的情形，以避免因為局部放電而導致電力設備故障甚至燒毀的情形發生。本論文主要是利用音射探頭組(AE Sensor pair)擷取局部放電訊號以及環境周圍聲音雜訊，避免單一音射探頭無法辨識訊號為內部局部放電或者為外部雜訊干擾的情形，並結合低功耗單晶片微控制器系統(TI MSP430)，使其自動辨別由音射探頭組偵測之訊號，將完整的放電資訊儲存在記憶卡中以供判讀，同時亦可將放大過的原始訊號經由示波器觀察。經由筆尖折斷放電模擬實驗證實本系統具備辨別放電訊號以及周圍雜訊的功能。再者透過儲存在記憶卡中之放電次數與時間可以判斷被測物的局部放電嚴重程度。此外，亦可使用多組音射探頭組做簡易局部放電定位，找出放電源。本系統除了可做為長期追蹤紀錄之用，也可提供重要的統計分析資料。

Partial discharge (PD) detection is used to detect the degradation of insulating material inside electrical equipment so as to avoid malfunction and burning down caused by partial discharge. This paper mainly uses AE Sensor pair to capture partial discharge signal and surrounding sound noise, to avoid the situation that single acoustic emission sensor cannot recognize whether the signal is internal partial discharge or external noise interference, and combine low power single chip microcontroller system (TI MSP 430) to make it automatically recognize the signal detected by the AE Sensor pair and store the complete discharge information in memory card for interpretation. By pencil lead break experiment, it can be verified that this system has the function of recognizing discharge signal and surrounding noise. Furthermore, the severity of partial discharge in the test object can be judged through discharge times and time stored in the memory card. In addition, it can also use multigroup acoustic emission sensor pair to do simple partial discharge positioning and find out the discharge source. This system can not only be used for long-term tracking record, but also provide important data of statistical analysis.

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