
1.上海交通大学电气工程学院,上海市 200240
2.国家电网有限公司华东分部,上海市 200120
Received:15 April 2026,
Revised:2026-06-16,
Published:01 October 2026
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姜店丰,姚颖蓓,谭振飞等.基于时序降维的电力电量平衡主导影响因素辨识方法[J].电力建设,2026,47(10):30-44.
JIANG Dianfeng,YAO Yingbei,TAN Zhenfei,et al.Identification Method of Dominant Influencing Factors for Power and Energy Balance Based on Time-Series Dimensionality Reduction[J].Electric Power Construction,2026,47(10):30-44.
姜店丰,姚颖蓓,谭振飞等.基于时序降维的电力电量平衡主导影响因素辨识方法[J].电力建设,2026,47(10):30-44. DOI: 10.12204/j.issn.1000-7229.2026.10.003.
JIANG Dianfeng,YAO Yingbei,TAN Zhenfei,et al.Identification Method of Dominant Influencing Factors for Power and Energy Balance Based on Time-Series Dimensionality Reduction[J].Electric Power Construction,2026,47(10):30-44. DOI: 10.12204/j.issn.1000-7229.2026.10.003.
目的
2
随着波动性新能源渗透率持续提升,新型电力系统平衡方式呈现概率化特征,传统基于固定场景的电力电量平衡分析已无法适应。亟需精准辨识影响平衡结论的关键源荷特征,提升平衡场景对真实源荷波动的代表性。为此,本文提出一种基于时序降维的电力电量平衡主导影响因素辨识方法。
方法
2
首先,定义源荷时序特征实现平衡场景的降维分析,解决源荷时序曲线分析维度高、时序关联强的问题。其次,结合Nataf变换与数据驱动模型,表征源荷时序特征对电力电量平衡指标的多元耦合映射关系。然后,提出基于全局灵敏度分析的电力电量平衡主导影响因素辨识方法。最后,基于省级电网源荷数据开展算例分析。
结果
2
相较于主成分分析场景聚合,所提方法在Kolmogorov-Smirnov距离度量下的计算误差降低了27.33%,验证了所提方法的有效性。
结论
2
所提方法量化了源荷时序特征对电力电量平衡指标的影响程度,提升了典型平衡场景对源荷波动的代表性,为新能源电力系统的平衡分析提供了理论与技术支撑。
Objective
2
With the continuously increasing penetration of volatile renewable energy, the balance mode of the new-type power system exhibits probabilistic characteristics, rendering the traditional fixed-scenario-based power and energy balance analysis inadequate. To improve the representativeness of balance scenarios for actual source-load fluctuations, it is essential to accurately identify the key source-load features that dominate balance conclusions. To this end, this paper proposes a method for identifying the dominant influencing factors of power and energy balance based on time-series dimensionality reduction.
Methods
2
First, source-load time-series features are defined to implement dimensionality reduction of balance scenarios, addressing the high dimensionality and strong temporal correlation of source-load time-series curves. Then, the multivariate coupling mapping relationship between source-load time-series features and power and energy balance indices is characterized using a data-driven model combined with the Nataf transformation. Next, a global-sensitivity-analysis-based method is proposed to identify the dominant influencing factors of power and energy balance. Finally, a case study is conducted using source-load data of a provincial power grid.
Results
2
Compared with principal component analysis-based scenario aggregation, the proposed method reduces the calculation error by 27.33% under the Kolmogorov-Smirnov distance metric, which verifies the effectiveness of the proposed method.
Conclusions
2
The proposed method quantifies the influence of source-load time-series features on power and energy balance indices and enhances the representativeness of typical balance scenarios for source-load fluctuations, thereby providing theoretical and technical support for the balance analysis of renewable energy systems.
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