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河海大学能源与电气学院,江苏省南京市 211100
臧海祥(1986—),男,通信作者,博士,副教授,博士生导师,主要研究方向:电力系统规划与运行分析、新能源发电技术等。E-mail:zanghaixiang@hhu.edu.cn
许瑞琦(1996—),女,硕士研究生,主要研究方向:电力系统大数据分析、负荷预测技术等。E-mail:xrqpost@163.com
刘璟璇(1998—),男,硕士研究生,主要研究方向:新能源发电技术。E-mail:211306080023@hhu.edu.cn
收稿:2022-04-27,
修回:2022-10-25,
网络出版:2023-01-09,
纸质出版:2023-07-10
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臧海祥,许瑞琦,刘璟璇等.基于多维融合特征和卷积神经网络的多任务用户短期负荷预测[J].电力系统自动化,2023,47(13):69-77.
ZANG Haixiang,XU Ruiqi,LIU Jingxuan,et al.Short-term Load Forecasting for Multi-task Consumers Based on Multi-dimensional Fusion Feature and Convolutional Neural Network[J].Automation of Electric Power Systems,2023,47(13):69-77.
臧海祥,许瑞琦,刘璟璇等.基于多维融合特征和卷积神经网络的多任务用户短期负荷预测[J].电力系统自动化,2023,47(13):69-77. DOI: 10.7500/AEPS20220427004.
ZANG Haixiang,XU Ruiqi,LIU Jingxuan,et al.Short-term Load Forecasting for Multi-task Consumers Based on Multi-dimensional Fusion Feature and Convolutional Neural Network[J].Automation of Electric Power Systems,2023,47(13):69-77. DOI: 10.7500/AEPS20220427004.
针对海量用户负荷预测场景下,应用单任务用户负荷预测法所导致的运行效率低以及无法学习相关任务间关联关系等问题,提出一种基于多维融合特征和卷积神经网络的多任务用户短期负荷预测方法。首先,基于聚类技术实现多任务学习中相关任务的选择;其次,为每一类用户群构建多维融合输入,合理有序容纳多个任务的特征,避免维度爆炸和信息混乱;最后,分别为每一类用户建立以卷积神经网络为共享层的多任务预测模型,学习共享特征,并行输出相应类中全部用户的负荷预测值。基于爱尔兰能源监管委员会提供的智能电表实测数据进行算例分析,结果表明,该方法在提高整体运行效率和平均预测精度方面均取得良好成效。
Aiming at the problems of low operation efficiency and being unable to learn the correlation between related tasks caused by the application of load forecasting method for single-task consumers in the scenario of load forecasting for massive users
a short-term load forecasting method for multi-task consumers based on multi-dimensional fusion feature and convolutional neural network is proposed. Firstly
the selection of relevant tasks in multi-task learning is realized based on clustering technology. Then
multi-dimensional fusion input is constructed for each cluster of consumers to reasonably and orderly accommodate the features of multiple tasks in order to avoid the dimensional explosion and the information chaos. Finally
a multi-task forecasting model with convolutional neural network as the sharing layer is established for each cluster of consumers to learn the sharing feature
and the load forecasting values of all consumers in the corresponding cluster are output in parallel. Case analysis on the basis of the measured data of smart meters provided by the Energy Management Commission of Ireland
the results show that the proposed method performs well in improving the overall operation efficiency and average forecasting accuracy.
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