政府為達成能源轉型的目標，已確立讓再生能源占比在未來幾年中大幅提升的政策目標，並以風力與太陽光電來扮演重要的供電角色，其間歇與不可預測的特性將會對台灣的電力系統運轉帶來極大的挑戰。本論文使用PSS®E電力系統分析軟體，探討大量太陽能併入2025年台灣電力公司夏季以及冬季之電網系統，當太陽能光電裝置容量達到目標20GW後對電網之衝擊分析。因為在台灣的天氣一年四季不一致，以及南部和北部日照狀況也不同，太陽能發電量將因為日照強度和日射量而有不同的影響，還有不同案場使用的太陽能模組將導致太陽光電裝置轉換效率會有所差異，這些都會影響太陽能發電量，因此本論文將會考量夏季及冬季不同的發電效率及轉換效率，並預估太陽能發電量進行併網模擬，以及檢視太陽能光電併入電網後是否符合法規「輸電系統規劃準則」與「再生能源發電系統併聯技術要點」中，電壓變動率、三相短路故障電流及暫態穩定度的規範。再生能源的慣量比傳統機組的慣量小很多，尤其太陽光電並非旋轉電機，完全無法提供慣量；當遇系統發生偶發（跳機）事故時，因系統慣量減少、頻率響應變差，可能造成系統穩定度問題。因此本論文將會先模擬傳統機組跳機案例後，計算出台灣電網不同區域的慣量，再因應系統慣量減少而造成系統穩定度的問題作出對策，加入儲能系統在北部、中部、南部不同區域裡相對慣量較低的地方，再模擬太陽光電發電量跳脫案例來觀察讓系統發生偶發事故後，是否有增加足夠慣量讓系統能即時維持穩定度及安全性。

In order to achieve the goal of energy transition, our government has established a policy goal to significantly increase the proportion of renewable energy in the next few years. Wind power and solar photovoltaics play an important role in power supply, and their intermittent and unpredictable characteristics will bring great challenges to the operation of Taiwan's power system. This thesis uses PSS®E power system analysis software to discuss the integration of large amounts of solar energy into the power system of Taiwan Power Company in summer and winter in 2025. When the solar photovoltaic installation capacity reaches the target of 20GW, the impact on the power grid is analyzed. Because the weather in Taiwan is inconsistent throughout the year, and the sunshine conditions in the south and north are also different. The solar power generation will have different effects due to the intensity of sunlight and the amount of sunlight, and the solar modules used in different cases will lead to differences in the conversion efficiency of photovoltaic devices. These all affect the amount of solar power. Therefore, this thesis will consider the different power generation efficiency and conversion efficiency in summer and winter, and estimate the solar power generation for grid-connection simulation. After the solar photovoltaic is integrated into the power grid, it will be checked whether it complies with the specifications of the voltage fluctuation rate, three-phase short-circuit fault current and transient stability in the regulations "Power Transmission System Planning Guidelines" and "Technical Points for the Power System Connected to Renewable Energy Power Generation Systems". The inertia of renewable energy is much smaller than that of traditional units. In particular, solar photovoltaic is not a rotating motor and cannot provide inertia at all. When an accidental or trip accident occurs in the system, the system stability problem may be caused due to the reduction of the inertia of the system and the deterioration of the frequency response. Therefore, this thesis will first simulate the case of the traditional unit trip, and then calculate the inertia in different regions of the Taiwan power system. Since the reduction of system inertia will cause the problem of system stability, the relative countermeasures need to be found. Energy storage systems are added in areas with low relative inertia in the northern, central and southern regions. The trip case simulation of solar photovoltaic power generation is used to observe whether there is enough inertia to increase the system to maintain stability and safety immediately after an accident occurs in the system.

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