本論文探討併網型太陽能發電系統對離島孤立系統頻率及電壓之影響。本文假設一座變流器輸出300 kW之市電併聯型太陽能發電系統併入台灣某離島孤立系統並利用Matlab/Simulink軟體以該島真實資料建立離島系統數學模型，及建構市電併聯型太陽能發電系統含太陽能陣列、升壓轉換器、換流器等作為模擬分析用。模擬內容包括太陽能發電系統在不同併接位置對電壓閃爍影響、太陽光照度變化影響，照度變化下柴油發電機組以不同模式運轉，三相短路故障及太陽能發電系統故障跳脫等。經由模擬結果探討太陽能發電系統之動態及暫態特性及離島系統穩定度。

This thesis analyzes the effects of a grid-connected photovoltaic (PV) generation system on the voltage and frequency of a real isolated island power system in Taiwan. A 350 kW PV system to be connected with the electric utility of the island is investigated in this thesis. Simulations of the isolated island power system and the PV grid-connected system are realized using Matlab/Simulink. A complete transient and dynamic stability analysis is investigated. Impacts of PV system connection locations in the isolated island power system, solar irradiation variation and optimal operational mode of diesel governors are studied. PV system dynamic behavior during three-phase fault is also included and proper connection capacity of PV system is estimated. Simulation results show a considerable effect of the PV system on voltage and frequency fluctuations. It provides a suggestion of generator locations on the isolated island power system in the future.

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