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Performance Evaluation of Stacking Models Based on Random Forest, XGBoost, and LGBM for Wind Power Forecasting

Random Forest, XGBoost, LGBM 조합형 Stacking 모델을 이용한 풍력 발전량 예측 성능 평가

  • Hui-Chan Kim ;
  • Dae-Young Kim ;
  • Bum-Suk Kim
  • 김희찬 (제주대학교, 대학원 풍력공학부) ;
  • 김대영 (제주대학교, 대학원 풍력공학부) ;
  • 김범석 (제주대학교, 대학원 풍력공학부)
  • Received : 2024.04.05
  • Accepted : 2024.08.30
  • Published : 2024.09.30

Abstract

Wind power is highly variable due to the intermittent nature of wind. This can lead to power grid instability and decreased efficiency. Therefore, it is necessary to improve wind power prediction performance to minimize the negative impact on the power system. Recently, wind power prediction using machine learning has gained popularity, and ensemble models in machine learning have shown high prediction accuracy. RF, GB, XGB and LGBM are decision tree-based ensemble models and have high predictive performance in wind power, but these models have problems from over-fitting and strong dependence on certain variables. However, the stacking model can improve prediction performance by combining individual models and compensate for the shortcomings of each model. In this study, The MAE of RF, XGB and LGBM is 310.42 kWh, 217.07 kWh and 265.20 kWh, respectively, while the stacking model based on RF, XGB and LGBM is 202.33 kWh. Stacking models can improve prediction performance. Finally, it is expected to contribute to electricity supply and demand planning.

Keywords

Acknowledgement

본 연구는 한국동서발전 "풍력발전기 출력저하 및 누적피로하중 예측기술 개발"의 지원을 받아 수행한 연구 과제입니다. (과제번호 : C-2023-05). 그리고 풍력발전 데이터를 제공해 준 제주 에너지 공사에 감사드립니다.

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