• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2023, Vol. 44 ›› Issue (5): 84-93.doi: 10.12204/j.issn.1000-7229.2023.05.009

• New Energy Power Generation • Previous Articles     Next Articles

Distributed Wind Power Forecasting Method Based on Frequency Domain Decomposition and Precision-weighted Ensemble

WANG Shaomin1,2(), WANG Shouxiang1,2(), ZHAO Qianyu1,2(), DONG Yichao3()   

  1. 1. Key Laboratory of the Ministry of Education on Smart Power Grids (Tianjin University), Tianjin 300072, China
    2. Tianjin Key Laboratory of Power System Simulation and Control (Tianjin University), Tianjin 300072, China
    3. State Grid Tianjin Electric Power Company Economic and Technological Research Institute, Tianjin 300171, China
  • Received:2022-06-15 Online:2023-05-01 Published:2023-04-27
  • Supported by:
    National Natural Science Founds of China(52077149);National Natural Science Founds of China(U2166202);State Grid Corporation of China Science and Technology Project(5400-202199280A-0-0-00)

Abstract:

Research on high-precision forecasting for distributed small wind power with strong random fluctuations is of great significance for enhancing the stability of small wind turbines and providing reliable support for distribution. Therefore, a distributed wind power forecasting method based on frequency domain decomposition and a precision-weighted ensemble was proposed. First, the original wind power signal was decomposed into different frequency bands through complete ensemble empirical mode decomposition with adaptive noise to capture the local fluctuation characteristics of wind power. Then, a precision-weighted Stacking model with two-layer heterogeneous learners was constructed to fully utilize the performance advantages of different learners and increase the generalization ability to deal with strong fluctuations. Finally, the model was verified on actual dataset from four wind turbines. It was observed that the proposed method is superior to several advanced prediction methods currently used in large wind farms, wind farm clusters, and single wind turbines, which proves the validity and generalization of the proposed method for distributed wind power forecasting.

Key words: distributed wind power, power forecasting, complete ensemble empirical mode decomposition with adaptive noise, precision weighting, ensemble learning

CLC Number: