arXiv:2410.18766cs.LGcs.IR2024-10被引 25

考虑城市区域差异与动态因素,提升电动车充电需求预测精度。

Citywide Electric Vehicle Charging Demand Prediction Approach Considering Urban Region and Dynamic Influences

  • 按兴趣点类型聚类区域,构建注意力超图网络捕捉非成对关系。
  • 引入可变特征选择网络,适应动态辅助信息,提升时序数据建模能力。
  • 适用于城市级充电设施规划,尤其适合多区域差异明显的场景。

电动车充电需求预测对空闲充电桩推荐和充电基础设施规划至关重要,有助于推动车辆电动化与绿色能源发展。现有时空研究性能仍不理想,主要因未充分考虑城市区域属性与多变量时间影响。为此,本文提出一种名为CityEVCP的城市级电动车充电需求预测学习方法。为捕捉城市区域间的非成对关系,我们根据区域内兴趣点的类型与数量对服务区域进行聚类,并构建相应的注意力超图网络;利用图注意力机制实现邻近区域间的信息传播。此外,设计可变特征选择网络,自适应学习动态辅助信息,并采用门控机制改进Transformer编码器以处理波动性充电时序数据。在真实城市级电动车充电数据集上的实验表明,该方法显著优于多种基准模型。同时验证了动态因素在不同城区对预测结果的影响,以及区域聚类方法的有效性。

原文摘要 · Abstract (English)

Electric vehicle charging demand prediction is important for vacant charging pile recommendation and charging infrastructure planning, thus facilitating vehicle electrification and green energy development. The performance of previous spatio-temporal studies is still far from satisfactory nowadays because urban region attributes and multivariate temporal influences are not adequately taken into account. To tackle these issues, we propose a learning approach for citywide electric vehicle charging demand prediction, named CityEVCP. To learn non-pairwise relationships in urban areas, we cluster service areas by the types and numbers of points of interest in the areas and develop attentive hypergraph networks accordingly. Graph attention mechanisms are employed for information propagation between neighboring areas. Additionally, we propose a variable selection network to adaptively learn dynamic auxiliary information and improve the Transformer encoder utilizing gated mechanisms for fluctuating charging time-series data. Experiments on a citywide electric vehicle charging dataset demonstrate the performances of our proposed approach compared with a broad range of competing baselines. Furthermore, we demonstrate the impact of dynamic influences on prediction results in different areas of the city and the effectiveness of our area clustering method.

充电预测时空模型区域聚类超图网络

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