為了因應未來離岸風場大規模併入台電系統，本論文旨在探討當離岸風電併入彰化地區電網時，各一次配電變電所與輸電線路可承受之最大併接容量，並分析離岸風場併網後，對系統電力潮流與暫態穩定度的影響。本論文以PSS/E電力分析軟體進行模擬，採用的模擬系統為台電公司民國107年離峰真實系統，並針對離岸風場提出三種不同併網方法與多個併入地點，以比較電網在不新增線路與採用N-1規劃準則的情況下，離岸風場採用不同併入點與不同併接方式時，系統最大可併入容量與輸電線路承載量之殊異。此外，本文亦會對已併入最大風場容量之電網進行不同電壓等級與距離之故障模擬，並觀察系統面對事故時回復穩定之能力。根據研究結果顯示，離岸風場在採用本文提出之最佳併網架構後，將可使系統的可併網量達到最大並達成政府2025年彰化1.8GW之推廣目標，且透過暫態穩定度與電力潮流等系統衝擊分析，發現系統在故障清除後仍可回復穩定運轉且符合台電「輸電系統規劃準則」與「再生能源發電系統併聯技術要點」之規定，而上述研究結果也可供離岸風場在規劃裝置容量、併入點與併接方式時之參考。

In order to connect with the future large-scale offshore wind fields into the Taipower system, this thesis aims to explore that each of the primary distribution substation and transmission lines can withstand the maximum capacity when the offshore wind power connected into the power grid in Changhua area. Power System Simulator for Engineering (PSS/E) is used to simulate in this thesis. The real off-peak system of the Taipower company in 2018 is used for the simulation. Three different grid-connected methods for the offshore wind field with multiple sites are proposed. The difference of the maximum capacity and transmission line capacity are compared for the grid without adding lines and with N-1 planning guidelines when offshore wind fields is used with different connected points and different grid-connected methods. In addition, the grid has been connected into the maximum wind capacity and it is tested for the fault simulation in different voltage levels and distances in this thesis. The ability of the system stability to respond to the faults is observed. According to the results of the study, the maximum reachabile grid-connected capacity of the system is reached and the government promotion target of 1.8GW in Changhua in 2025 is also achieved after the optmal grid-connected structure proposed in this thesis is adopted in the offshore wind fields. This reaserch found that the system can be restored to the stable operation after clearing faults and the requirements of "Transmission System Planning Guidelines" and "Renewable Energy Power Generation System Connected Technical Points" in Taipower are also conformed through the system impact analysis of the transient stability and power flow. The results of the above study can also be used for the reference of the capacity, connected point and connected method in offshore wind farm planning.

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