Article(id=1223193059677032624, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20221985, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1663862400000, receivedDateStr=2022-09-23, revisedDate=1665936000000, revisedDateStr=2022-10-17, acceptedDate=null, acceptedDateStr=null, onlineDate=1769561551254, onlineDateStr=2026-01-28, pubDate=1674576000000, pubDateStr=2023-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769561551254, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769561551254, creator=13701087609, updateTime=1769561551254, updator=13701087609, issue=Issue{id=1223193053830169317, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='1', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769561549861, creator=13701087609, updateTime=1769567790701, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223219229885857794, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223219229885857795, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=207, endPage=211, ext={EN=ArticleExt(id=1223193059999994040, articleId=1223193059677032624, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Short-term Power Load Forecasting Based on CVMD-GRU-DenseNet Hybrid Model, columnId=1222940986234364233, journalTitle=Water Resources and Power, columnName=ELECTRICAL ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

A CVMD-GRU-DenseNet model for short-term load forecasting based on a decomposition-prediction-reconstruction framework is proposed to aim at the nonlinear and multi-period characteristics of power load time series. In the decomposition stage, the optimal decomposition number of VMD is determined according to the correlation entropy between subsequences to improve the decomposition quality. In the prediction stage, the input features are selected according to the characteristics of each sub-sequence. The GRU neural network and the DenseNet model are employed to forecast the regular low-frequency and highly random high-frequency components, respectively. Finally, the prediction results for each element are reconstructed into a load prediction curve. The short-term load forecasting results of four seasons for a city in Hubei Province show that the proposed method can effectively improve forecasting accuracy and has strong generalization ability.

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针对电力负荷时序变化非线性和多周期性特点,提出一种基于分解-预测-重构框架的CVMD-GRU-DenseNet短期负荷预测方法。分解阶段依据子序列间的相关熵确定VMD最佳分解数,提高负荷序列分解质量;预测阶段针对各子序列特点筛选输入特征,规律性强的低频分量采用GRU神经网络预测模型,强随机性的高频分量采用DenseNet神经网络预测模型;最后将各分量的预测结果重构为负荷预测曲线。湖北某市四季的实际负荷算例结果表明,该方法能有效提高短期负荷预测精度,并具有较强的泛化能力。

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李丹(1980-),女,博士、副教授、硕导,研究方向为电力负荷与新能源预测和电力系统概率分析,E-mail:
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章可(1997-),女,硕士研究生,研究方向为电力负荷与新能源预测,E-mail:

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基于CVMD-GRU-DenseNet混合模型的短期电力负荷预测
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章可 1 , 李丹 1 , 孙光帆 1, 2 , 谭雅 1, 2 , 贺帅 1, 2
水电能源科学 | 电气工程 2023,41(1): 207-211
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水电能源科学 | 电气工程 2023, 41(1): 207-211
基于CVMD-GRU-DenseNet混合模型的短期电力负荷预测
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章可1 , 李丹1 , 孙光帆1, 2, 谭雅1, 2, 贺帅1, 2
作者信息
  • 1.三峡大学电气与新能源学院,湖北 宜昌 443002
  • 2.新能源微电网湖北省协同创新中心,湖北 宜昌 443002
  • 章可(1997-),女,硕士研究生,研究方向为电力负荷与新能源预测,E-mail:

通讯作者:

李丹(1980-),女,博士、副教授、硕导,研究方向为电力负荷与新能源预测和电力系统概率分析,E-mail:
Short-term Power Load Forecasting Based on CVMD-GRU-DenseNet Hybrid Model
Ke ZHANG1 , Dan LI1 , Guang-fan SUN1, 2, Ya TAN1, 2, Shuai HE1, 2
Affiliations
  • 1.College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China
  • 2.Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, Yichang 443002, China
出版时间: 2023-01-25 doi: 10.20040/j.cnki.1000-7709.2023.20221985
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针对电力负荷时序变化非线性和多周期性特点,提出一种基于分解-预测-重构框架的CVMD-GRU-DenseNet短期负荷预测方法。分解阶段依据子序列间的相关熵确定VMD最佳分解数,提高负荷序列分解质量;预测阶段针对各子序列特点筛选输入特征,规律性强的低频分量采用GRU神经网络预测模型,强随机性的高频分量采用DenseNet神经网络预测模型;最后将各分量的预测结果重构为负荷预测曲线。湖北某市四季的实际负荷算例结果表明,该方法能有效提高短期负荷预测精度,并具有较强的泛化能力。

短期负荷预测  /  变分模态分解  /  相关熵  /  门控循环单元  /  密集连接卷积网络

A CVMD-GRU-DenseNet model for short-term load forecasting based on a decomposition-prediction-reconstruction framework is proposed to aim at the nonlinear and multi-period characteristics of power load time series. In the decomposition stage, the optimal decomposition number of VMD is determined according to the correlation entropy between subsequences to improve the decomposition quality. In the prediction stage, the input features are selected according to the characteristics of each sub-sequence. The GRU neural network and the DenseNet model are employed to forecast the regular low-frequency and highly random high-frequency components, respectively. Finally, the prediction results for each element are reconstructed into a load prediction curve. The short-term load forecasting results of four seasons for a city in Hubei Province show that the proposed method can effectively improve forecasting accuracy and has strong generalization ability.

short-term load forecasting  /  variational modal decomposition  /  conrrentropy  /  gated recurrent units  /  densely connected convolution networks
章可, 李丹, 孙光帆, 谭雅, 贺帅. 基于CVMD-GRU-DenseNet混合模型的短期电力负荷预测. 水电能源科学, 2023 , 41 (1) : 207 -211 . DOI: 10.20040/j.cnki.1000-7709.2023.20221985
Ke ZHANG, Dan LI, Guang-fan SUN, Ya TAN, Shuai HE. Short-term Power Load Forecasting Based on CVMD-GRU-DenseNet Hybrid Model[J]. Water Resources and Power, 2023 , 41 (1) : 207 -211 . DOI: 10.20040/j.cnki.1000-7709.2023.20221985
  • 国家自然科学基金青年基金项目(51807109)
2023年第41卷第1期
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doi: 10.20040/j.cnki.1000-7709.2023.20221985
  • 接收时间:2022-09-23
  • 首发时间:2026-01-28
  • 出版时间:2023-01-25
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  • 收稿日期:2022-09-23
  • 修回日期:2022-10-17
基金
国家自然科学基金青年基金项目(51807109)
作者信息
    1.三峡大学电气与新能源学院,湖北 宜昌 443002
    2.新能源微电网湖北省协同创新中心,湖北 宜昌 443002

通讯作者:

李丹(1980-),女,博士、副教授、硕导,研究方向为电力负荷与新能源预测和电力系统概率分析,E-mail:
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2种不同金属材料的力学参数

Family
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Number of
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种数
Number of
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占总种数比例
Percentage of
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Genus
种数
Number of
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占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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