LIU Yunbing, WEN Jiale, HE Xiaoxia, et al. Wind power ramp event prediction based on SWT-SDA and LightGBM[J]. Power System Protection and Control, 2026, 54(20).
DOI:
LIU Yunbing, WEN Jiale, HE Xiaoxia, et al. Wind power ramp event prediction based on SWT-SDA and LightGBM[J]. Power System Protection and Control, 2026, 54(20).DOI: 10.19783/j.cnki.pspc.260332.
Wind power ramp event prediction based on SWT-SDA and LightGBM
摘要
风电爬坡事件(wind power ramp event
WPRE)易引发电网频率波动,对电力系统安全稳定运行造成重大影响。为提高其预测精度,覆盖极端风险场景,提出一种结合风险量化的WPRE预测方法。首先,采用同步挤压小波变换与摆动门算法(synchronous squeezing wavelet transform-swinging door algorithm
Wind power ramp events (WPREs) can easily cause fluctuations in grid frequency
posing significant challenges to the safe and stable operation of power systems. To improve the prediction accuracy of WPREs while accounting for extreme risk scenarios
this paper proposes a WPRE prediction method integrated with risk quantification. First
the synchronous squeezing wavelet transform-swinging door algorithm (SWT-SDA) is employed for ramp detection. Specifically
SWT is used to filter noise from raw power signals
and the conditional value-at-risk is incorporated into the ramp threshold setting through the SDA algorithm to identify ramp events and generate labels from the raw data. Second
the ramp labels are used as inputs to achieve preliminary wind power prediction
and LightGBM is employed to build an error correction model for revising the preliminary wind power prediction results. Finally
the proposed ramp detection method is used to identify ramp events from the corrected power data
thereby achieving WPRE prediction. Case studies show that the proposed method significantly improves WPRE prediction accuracy. The threshold setting based on conditional value-at-risk enables risk level definition to better align with practical requirements
thereby enhancing the capability of power systems to prevent and mitigate ramp risks.
关键词
Keywords
references
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