국내 육상 풍력단지 내 중형 풍력터빈 적용에 의한 연간발전량 및 하중 영향 예측

초록

In this study, the possibility of installing medium-sized wind turbines in existing wind farms with large-sized wind turbines to increase annual energy production (AEP) was investigated by comparing AEP and fatigue loads. For this, two onshore wind farms located in flat terrain were chosen. To construct wind resource maps for the wind farms, a Reynolds-averaged Navier-Stokes (RANS)-based computational fluid dynamics (CFD) analysis program, WindSim, was used. The wind resource maps were used as inputs to WindPRO to predict variations in AEP and fatigue loads in wind farms with and without medium-sized wind turbines. As a result, AEP increased by 2.00% and 10.0% when additional medium-sized wind turbines were installed in two existing target wind farms (A and B) without a decrease in the capacity factor (CF). The CF in each wind farm increased by 0.02 % and 0.44 %, respectively. The maximum fatigue load of the existing large-sized wind turbines increased slightly, but that of the medium-sized wind turbines installed additionally in wind farm A was predicted to be high, at 106.0 % and 100.2 %.

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