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基于多模态混合特征的电力用户分类识别方法

Power user classification and recognition method based on multimodal hybrid features

  • 摘要: 针对代理购电用户用电行为的不规则性和多样性,为实现电力用户类型精准识别,提出了一种基于一维统计特征、格拉姆角场和递归图的多模态混合特征的分类识别方法。首先,根据现行分时电价政策,将用户年度用电数据划分为春、夏、秋、冬4个典型用电曲线,并针对工作日和节假日用电行为的差异性,提取用户节假日典型用电曲线。然后,基于这5类典型用电曲线,计算用户的电价敏感系数、用电平稳度等统计特征,并结合形状距离,利用K-shapes聚类方法生成用户类型标签。最后,通过格拉姆角场和递归图将用户年分时用电曲线进行图像化处理,与统计特征相结合,构建多模态混合特征的用户分类识别模型。实验结果表明,基于形状距离的K-shapes聚类方法能够精准划分用户类型,所提出的用户类型识别方案对各聚类标签用户的识别准确率均超过94%,可以为代理购电公司的用户侧管理提供有效的技术支撑。

     

    Abstract: To address the irregularity and diversity of electricity consumption behavior among proxy power purchase users, this paper proposes a classification and recognition method based on multimodal hybrid features combining one-dimensional statistical features, Gramian Angular Field (GAF), and Recurrence Plot (RP), namely, 1D-GAFs-RP, to realize accurate identification of power consumer types. Initially, in accordance with the current time-of-use electricity price policy, the annual electricity consumption data of users are divided into four typical consumption curves corresponding to spring, summer, autumn, and winter. Additionally, considering the differences in electricity consumption behaviors between weekdays and holidays, the typical consumption curves for holidays are extracted. Subsequently, based on these five typical consumption curves, the statistical features such as users' price sensitivity coefficient and electricity consumption stability are calculated. Combining these with shape distances, the k-shapes clustering method is employed to generate user type labels. Finally, by applying GAFs and RPs to visualize the annual time-of-use electricity consumption curves and integrating them with statistical features, a multimodal hybrid feature-based user classification and recognition model is constructed. Experimental results indicate that the k-shapes clustering method based on shape distances can accurately classify user types. The proposed user type recognition scheme achieves an identification accuracy rate of over 94% for each cluster label, providing effective technical support for user-side management of proxy power purchase companies.

     

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