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국내 대규모 해상풍력단지 연계 시 재생에너지 간 상호영향성을 고려한 강건도 평가
김범주,임승혁,최남기,이병준,박보현,강숙현,배주호 한국풍력에너지학회 2021 풍력에너지저널 Vol.12 No.4
When a large-scale offshore wind farm is connected to a grid, the interaction with existing renewable energy sources in the connected area causes a decrease in system strength. The short circuit ratio (SCR) is a representative index that evaluates the strength of a system. However, since SCR does not take into account the interaction of renewable energy sources, a higher system strength evaluation may appear than the actual system strength in areas where renewable energy is concentrated. Therefore, in this paper, the system strength of the Honam area is evaluated using the inverter interaction level (IIL) index, which considers the interaction of renewable energies using the power tracking method. In addition, the impact of the interaction with renewable energy sources on system strength is analyzed by comparing the IIL index and the SCR index when connecting large-scale offshore wind farms.