太陽光電系統及用於輔助供電的不斷電系統的蓄電池，都是高功
率的直流設備。隨著再生能源系統的增加，其發生的直流電弧故障所
帶來的危害事故也逐漸增多。因直流電弧不過零點之特性，直流電弧
故障發生時會持續燃燒。故當直流電弧故障產生時，其危險性較交流
電弧故障危險。相較於交流電弧，直流電弧的分析及規範並不像 IEEE
1584 有一套完整的標準及分析流程，這使得直流電弧故障的防範與
處理顯得更加複雜。
本研究目的為分析各種直流電弧計算方法，並透過 etap 軟體及
數值分析軟體(Matlab)，來模擬這些直流電弧分析方法對於直流電弧
故障發生在太陽光電系統及不斷電系統時的評估效能。此外，本研究
針對目前市售電弧偵測器包括電弧故障斷路器(AFCI)、電弧故障檢測
器(AFD)、及電弧故障檢測裝置(AFDD)進行評估，並建置一直流電弧
檢測平台，用來測試 AFD 應用於直流電弧故障之檢測能力。

Solar systems and batteries used in uninterruptible power systems(UPSs) for auxiliary power supply are all high-power DC equipment. With the increase of renewable energy systems, the harmful accidents caused by DC arc faults are also gradually increasing. Due to the characteristic that the DC arc does not cross the zero level, combustion will continue after a DC arc fault occurs. Due to the characteristic that the DC current does not cross the zero level, combustion will continue after a DC arc fault occurs.
Therefore, when a DC arc fault occurs, it is more dangerous than an AC arc fault. Compared with AC arcs, the analysis and specifications of DC arcs do not have a complete set of standards and analysis procedures like IEEE 1584, which makes the prevention and treatment of DC arc faults more complicated.
The purpose of this study is to analyze various DC arc calculation
methods, and to use etap software and numerical analysis software (Matlab) to evaluate the effectiveness of these DC arc analysis methods when DC arc faults occur in solar systems and UPSs. In addition, this study evaluates commercial arc detectors including arc fault circuit interrupters (AFCIs), arc fault detectors (AFDs), and arc fault detection devices (AFDDs).
Finally, a DC arc detection platform is built to test the detection capabilities of AFDs applied to DC arc faults.

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