近年來，隨著電力電子設備與非線性負載的數量迅速增加，進而導致電力系統受到這些設備嚴重的諧波汙染。除此之外，當電力系統中發生不同的故障情況，可能會導致系統中的電壓發生驟降或驟升，甚至造成電力中斷。為了改善這些電力品質問題，本論文提出統一電力品質調節器結合太陽能發電系統以及超級電容器來改善電力品質問題。由本論文之模擬結果可以得出所提出之架構能同時補償電網電流以及負載電壓，除了保護負載不受電壓干擾影響，還能減少負載注入於電網中的諧波，提供負載所需之虛功來使電網達到良好的功率因數。太陽能發電系統能藉由提供功率給超級電容器以及電網來達到節能之效用，而超級電容器則能解決傳統統一電力品質調節器無法改善的電力中斷或電壓驟降較深的問題，本論文最後驗證所提出統一電力品質調節器結合太陽能發電系統以及超級電容器於改善電力品質之有效性。

In recent years, the proliferation of power-electronics devices and non-linear loads has resulted in a significant increase in harmonic pollution in power systems. Additionally, the occurrence of different fault conditions in the power system can lead to critical voltage sags or swell, and even power interruption. To address these power quality issues, this paper proposes a unified power quality conditioner (UPQC) integrated with a PV system and a supercapacitor (SC). The simulation results demonstrate that the proposed system effectively compensates grid current and load voltage at the same time, mitigating the impact of voltage disturbances on the load and reducing the harmonic pollution resulting from the non-linear load. Moreover, it provides the necessary reactive power to improve the grid’s power factor. The PV system can efficiently supply power to the SC and the grid while the SC also addresses the limitations of traditional UPQC by effectively handling power interruptions and critical voltage sags. Finally, this thesis validates the effectiveness of improving the power quality of the UPQC integrated with a PV system and an SC.

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