電力設備絕緣劣化時，常會伴隨部分放電現象之產生。部分放電會以光能、熱能、聲響及化學變化等形式釋放能量，進而產生臭氧、氧化物等化學物質，逐漸侵蝕絕緣材料，而形成導電通道，沿電場方向形成樹狀結構，降低絕緣能力。如若電力設備因絕緣不良而損毀，將造成電力系統不穩定，影響供電品質。
本研究擬研製一低成本、高識別度之部分放電量測設備，以提升應用於電力設備上之部分放電量測能力。透過高頻比流器(HFCT)、類比-數位轉換器(ADC)、現場可程式化閘陣列(FPGA)、ARM Cortex-A8微處理器，結合應用於自製之量測設備，並能透過網路介面傳輸至電腦。
經比對自製裝置與商用型部分放電量測設備之測試結果，驗證了自製裝置的正確性。藉由此自製裝置之實現，大幅提升具有低成本及高識別度之部分放電量測設備的發展空間。

The insulation of power equipment deteriorates, it is often occurs a partial discharge(PD) phenomenon. Part of the discharge will release energy in the form of light, heat, sound and chemical changes, and then produce chemicals such as ozone and oxides, gradually eroding the insulating material, forming a conductive path, forming a treeing structure along the direction of the electric field, and reducing the insulating ability. If the power equipment is damaged due to poor insulation, the power system will be unstable and the power supply quality will be ignited.
This study develop a low-cost, high signal-identification PD measurement device by using high-frequency current transformers(HFCT), analog-to-digital converters(ADC), a field programmable gate array(FPGA), and an ARM Cortex-A8 microprocessor for a self-designed PD measurement that was able to transmit data to a computer through its network interface.
The results revealed that the self-designed measurement device was comparable to the commercial model in the recognition of high-frequency PD signals. The self-designed PD measurement device was deemed to have considerable advantages in cost and expandability.

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