長期性監測局部放電被視為有效診斷絕緣狀態的方式之一，對於地下電纜系統而言，在重要性的地下電纜接頭配置一個永久的監測模組，除可即時性地掌握絕緣狀態，並且可達分散式的監控架構，有助於區域電力設備之管理。然而，在實務發展上，監測模組的成本是極為重要的一環，此也是本文動機與緣由。
　　本文提出的分散式局部放電監測模組，功能包含局部放電信號量測、資料處理，以及資料傳輸。監測模組的實體架構是以數位信號處理器TMS320F28335為控制核心，並整合局部放電信號處理電路和通訊設備。為了降低成本，本文將自行設計數位信號處理電路，並以雙層電路板的方式實現。
　　經由實測驗證，本文提出的局部放電監測模組成功開發功能包含信號量測、資料處理與資料傳輸等，同時也改善既有局部放電處理電路之性能，以提高響應速度與降低誤差。

A long-term partial discharges monitoring is one of the efficient methods to assess the insulation status. For instance, a monitoring module is permanently attached on important cable joint in the underground cable system. The monitoring module can monitor the status immediately and perform dispersed monitoring architecture. It is benefit to manage electric apparatus in the area. However, the cost of monitoring module is the important part in practical development. This is also the motivation of this paper.
This study proposed a dispersed partial discharge monitoring module (PDMM), which is responsible to partial discharge signal measurement, data analysis and data transmission. The physical structure of monitoring module is based on digital signal processor (DSP), TMS320F28335. In addition, it integrated with PD signal processing circuit and communication device. In order to reduce the cost the digital signal processing circuit was designed by this paper and conducted in double layer printed board.
According to the estimation of practical operation, this paper has developed the digital signal processor-TMS320F28335 for the controlled core of PDMM that contains the signal measurement, data analysis and data transmission. Furthermore, improving the PD signal processing circuit frequency response and errors.

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