Article(id=1245407863632409488, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156262727438951343, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2403421, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1715184000000, receivedDateStr=2024-05-09, revisedDate=1720454400000, revisedDateStr=2024-07-09, acceptedDate=null, acceptedDateStr=null, onlineDate=1774857973248, onlineDateStr=2026-03-30, pubDate=1741363200000, pubDateStr=2025-03-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774857973248, onlineIssueDateStr=2026-03-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774857973248, creator=13701087609, updateTime=1774857973248, updator=13701087609, issue=Issue{id=1156262727438951343, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='7', pageStart='2193', pageEnd='3077', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1753604116544, creator=13701087609, updateTime=1753771263994, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1156963794699248405, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156262727438951343, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1156963794699248406, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156262727438951343, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2817, endPage=2824, ext={EN=ArticleExt(id=1245407865263992883, articleId=1245407863632409488, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=State Prediction Method for Digital Twins of Power Distribution Networks by Integrating Temperature Factors with Wavelet LSTM, columnId=1156262733675876713, journalTitle=Science Technology and Engineering, columnName=Papers·Electrical Technology, runingTitle=null, highlight=null, articleAbstract=
The digital twin technology of the distribution network is an important product resulting from the integration and development of the power system and information technology. The technology simulates the physical behavior and operational status of the distribution network in a digital space by constructing a virtual model of the physical distribution network, enabling comprehensive simulation and analysis. Due to the diverse systems and complex states involved, the existing digital twin simulation platform technology for distribution networks still requires improvement. A wavelet-LSTM fusion model for power state and weather factors was constructed based on the existing wavelet transform and long short-term memory (LSTM) neural network. The high-dimensional input data were converted into detail and contour coefficients using discrete wavelet transform. Subsequently, LSTM neural networks were constructed to process the data and fuse the results, thereby forming accurate prediction outcomes. This method was validated on real datasets, showing that the wavelet-LSTM fusion model significantly improves the mean absolute percentage error (MAPE) compared to the existing LSTM network. Additionally, the method was tested on datasets from different industries. Compared to wavelet-Lasso, LSTM, and STL-LSTM, it exhibits better performance in terms of MAPE, demonstrating that the wavelet LSTM prediction method can be applied to state data from various sectors, thereby providing robust support for future state prediction of digital twins.
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配电网数字孪生技术是当前电力系统和信息技术融合发展的重要产物,它通过构建实体配电网的虚拟模型,在数字空间中模拟配电网的物理行为和运行状态,实现对实体配电网的仿真分析。由于配电网涉及的系统多样、状态复杂,现有配电网数字孪生仿真平台技术仍有待提升。提出了一种基于小波与长短期记忆(long short-term memory, LSTM)网络融合的数字孪生状态预测方法,该方法在现有小波变换以及LSTM神经网络的基础上,构造了面向电力状态以及天气因素的小波-LSTM融合模型,借助离散小波变换将高维输入数据转化为细节与轮廓系数,然后通过LSTM神经网络对数据处理求解以及结果的融合,从而形成准确的预测结果。在真实数据集上进行验证,表明小波-LSTM融合模型较现有LSTM网络在平均绝对百分比误差(mean absolute percentage error, MAPE)指标上有显著提升。最后,还在不同行业的数据集上进行了测试,结果表明小波LSTM预测方法可适用于不同行业的状态数据,相较于小波Lasso、LSTM、STL-LSTM在MAPE方面具有更好的性能,可为未来数字孪生的状态预测提供良好的支持。
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, authorsList=贾东梨, 康田园, 王帅, 安义, 戚沁雅, 连勇超)}, authors=[Author(id=1245407872289452514, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=jiadongli@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1245407872411087349, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, authorId=1245407872289452514, language=EN, stringName=Dong-li JIA, firstName=Dong-li, middleName=null, lastName=JIA, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 China Electric Power Research Institute, Beijing 100192, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1245407872524333571, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, authorId=1245407872289452514, language=CN, stringName=贾东梨, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 中国电力科学研究院有限公司, 北京 100192, bio={"content":"
贾东梨(1982—),女,汉族,山东济宁人,硕士,教授级高级工程师。研究方向:配电网仿真与运行。E-mail:jiadongli@163.com。
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贾东梨(1982—),女,汉族,山东济宁人,硕士,教授级高级工程师。研究方向:配电网仿真与运行。E-mail:jiadongli@163.com。
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1 China Electric Power Research Institute, Beijing 100192, China), AuthorCompanyExt(id=1245407871928742322, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407871895187881, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 State Grid Jiangxi Electric Power Research Institute, Nanchang 330096, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1245407873715516040, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, authorId=1245407873489023602, language=CN, stringName=安义, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 国网江西省电力科学研究院, 南昌 330096, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1245407872033599936, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, xref=2, ext=[AuthorCompanyExt(id=1245407872041988545, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407872033599936, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3 东方电子股份有限公司, 烟台 264011, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1245407872151040464, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, xref=3, ext=[AuthorCompanyExt(id=1245407872159429072, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407872151040464, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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22(30): 13330-13337., articleTitle=考虑多维特征和数据增强的空间负荷预测方法, refAbstract=null), Reference(id=1245407883240780082, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, doi=null, pmid=null, pmcid=null, year=2022, volume=22, issue=30, pageStart=13330, pageEnd=13337, url=null, language=null, rfNumber=[23], rfOrder=35, authorNames=Huang Dongmei, Zhang Ningning, Hu Anduo, journalName=Science Technology and Engineering, refType=null, unstructuredReference=
Huang Dongmei,
Zhang Ningning,
Hu Anduo,
et al. Spatial load forecasting method considering multi-dimensional feature and data enhancement[J].
Science Technology and Engineering,
2022,
22(30): 13330-13337., articleTitle=Spatial load forecasting method considering multi-dimensional feature and data enhancement, refAbstract=null)], funds=[Fund(id=1245407878912258127, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, awardId=5400-202255154A-1-1-ZN, language=CN, fundingSource=国家电网有限公司总部科技项目(5400-202255154A-1-1-ZN), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1245407871895187881, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, xref=1, ext=[AuthorCompanyExt(id=1245407871920353711, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407871895187881, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 China Electric Power Research Institute, Beijing 100192, China), AuthorCompanyExt(id=1245407871928742322, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407871895187881, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 中国电力科学研究院有限公司, 北京 100192)]), AuthorCompany(id=1245407872033599936, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, xref=2, ext=[AuthorCompanyExt(id=1245407872041988545, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407872033599936, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 State Grid Jiangxi Electric Power Research Institute, Nanchang 330096, China), AuthorCompanyExt(id=1245407872054571458, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407872033599936, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 国网江西省电力科学研究院, 南昌 330096)]), AuthorCompany(id=1245407872151040464, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, xref=3, ext=[AuthorCompanyExt(id=1245407872159429072, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407872151040464, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Dongfang Electronics Co., Ltd., Yantai 264011, China), AuthorCompanyExt(id=1245407872167817681, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, companyId=1245407872151040464, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 东方电子股份有限公司, 烟台 264011)])], figs=[ArticleFig(id=1245407875938497376, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Fig.1, caption=
DWT schematic diagram, figureFileSmall=EM928kdFBOT62eHp4Tl3fQ==, figureFileBig=aYrHeZ8efKw5dGfoKeGugw==, tableContent=null), ArticleFig(id=1245407876047549287, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=图1, caption=
DWT示意图, figureFileSmall=EM928kdFBOT62eHp4Tl3fQ==, figureFileBig=aYrHeZ8efKw5dGfoKeGugw==, tableContent=null), ArticleFig(id=1245407876315984766, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Fig.2, caption=
LSTM unit computation flowchart, figureFileSmall=kUTEQOyjMK38HsnlRGXfBg==, figureFileBig=KOI/a/EbU7ecYDpZXYcd+A==, tableContent=null), ArticleFig(id=1245407876450202505, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=图2, caption=
LSTM单元计算流程图 i代表输入门;f代表遗忘门;o代表输出门; c代表当前状态;h代表隐藏状态
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Flowchart for LSTM multivariate state prediction integrated with wavelet decomposition, figureFileSmall=wfrLChoAHQFD9txLI4V8WQ==, figureFileBig=sGENZHTrcftm0s8I0fvWCw==, tableContent=null), ArticleFig(id=1245407876689277851, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=图3, caption=
融合小波分解的LSTM多元状态预测流程图, figureFileSmall=wfrLChoAHQFD9txLI4V8WQ==, figureFileBig=sGENZHTrcftm0s8I0fvWCw==, tableContent=null), ArticleFig(id=1245407876857050023, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Fig.4, caption=
Comparison chart of forecast indicators from 2022-07-01 to 2022-07-08, figureFileSmall=EOlltz+LDAR7XqX565ttlw==, figureFileBig=zZxNtOq5LxvQx4P2/680ZA==, tableContent=null), ArticleFig(id=1245407877003850677, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=图4, caption=
2022-07-01—2022-07-08预测指标对比图, figureFileSmall=EOlltz+LDAR7XqX565ttlw==, figureFileBig=zZxNtOq5LxvQx4P2/680ZA==, tableContent=null), ArticleFig(id=1245407877133874113, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Fig.5, caption=
Comparison chart of forecast results for July 2nd, figureFileSmall=s+WAOC0PQRZegiG6QAIcJg==, figureFileBig=EiDsUUFfWd6POtQ86+umXg==, tableContent=null), ArticleFig(id=1245407877242926023, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=图5, caption=
7月2日预测结果对比图, figureFileSmall=s+WAOC0PQRZegiG6QAIcJg==, figureFileBig=EiDsUUFfWd6POtQ86+umXg==, tableContent=null), ArticleFig(id=1245407877377143761, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Fig.6, caption=
Prediction effect diagram for other fields, figureFileSmall=Gv/TPypVhH3UwkKMHrX0hQ==, figureFileBig=to0mdonO+aV211wUeUKa9w==, tableContent=null), ArticleFig(id=1245407877574276058, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=图6, caption=
其他领域预测效果图, figureFileSmall=Gv/TPypVhH3UwkKMHrX0hQ==, figureFileBig=to0mdonO+aV211wUeUKa9w==, tableContent=null), ArticleFig(id=1245407877695910887, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法1: State Prediction |
| Input: Raw collected data d. |
| Output: The predicted state v for the next moment. |
| 1.//步骤1.数据清洗和处理以获取状态数据s和温度数据t. |
| 2.(s, t)=Interpolation_algorithm(d) |
| 3.//步骤2.离散小波分解以获取高频数据h和低频数据l. |
| 4.(h, l)=DWT (s, t) |
| 5.//步骤3.分别处理高频数据和低频数据. |
| 6.h'=Normalization (h) |
| 7.Oh =LSTM (h') |
| 8.l'= Normalization (l) |
| 9.Ol = LSTM (l ') |
| 10.//步骤4.结果预测. |
| 11.Os=Wavelet reconstruction (Oh,Ol) |
| 12.v ← Os |
), ArticleFig(id=1245407877821740015, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法1: State Prediction |
| Input: Raw collected data d. |
| Output: The predicted state v for the next moment. |
| 1.//步骤1.数据清洗和处理以获取状态数据s和温度数据t. |
| 2.(s, t)=Interpolation_algorithm(d) |
| 3.//步骤2.离散小波分解以获取高频数据h和低频数据l. |
| 4.(h, l)=DWT (s, t) |
| 5.//步骤3.分别处理高频数据和低频数据. |
| 6.h'=Normalization (h) |
| 7.Oh =LSTM (h') |
| 8.l'= Normalization (l) |
| 9.Ol = LSTM (l ') |
| 10.//步骤4.结果预测. |
| 11.Os=Wavelet reconstruction (Oh,Ol) |
| 12.v ← Os |
), ArticleFig(id=1245407877972734971, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Table 1, caption=
Description of the dataset for LSTM multivariate state prediction integrated with wavelet decomposition
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| 项目 | 采集频率 | 文件格式 | 日期范围 |
| 数据集 | 15 min(96点) | csv | 2018-01-01—2022-07-08 |
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融合小波分解的LSTM多元状态预测数据集描述
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| 项目 | 采集频率 | 文件格式 | 日期范围 |
| 数据集 | 15 min(96点) | csv | 2018-01-01—2022-07-08 |
), ArticleFig(id=1245407878232780817, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Table 2, caption=
Format of the training set for multivariate electricity state coefficients
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| 项目 | 自变量 | 因变量 |
| 训练集 | 过去第21、14 d、一周的 用电状态、温度数据 | 当天用电状态 |
), ArticleFig(id=1245407878333444125, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=表2, caption=
多元用电状态系数训练集格式
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| 项目 | 自变量 | 因变量 |
| 训练集 | 过去第21、14 d、一周的 用电状态、温度数据 | 当天用电状态 |
), ArticleFig(id=1245407878438301734, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Table 3, caption=
Comparison of state data forecasting metrics using multiple algorithms
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| 方法 | 平均绝对百分比误差/% |
| 07-01 | 07-02 | 07-03 | 07-04 | 07-05 | 07-06 | 07-07 | 07-08 |
| 小波LASSO | 3.80 | 2.17 | 3.48 | 3.53 | 4.71 | 4.05 | 5.63 | 1.24 |
| LSTM | 2.41 | 2.93 | 3.66 | 4.22 | 2.06 | 3.09 | 3.25 | 1.79 |
| STL-LSTM | 3.02 | 2.39 | 2.82 | 3.22 | 7.09 | 3.59 | 2.79 | 2.38 |
| 小波-LSTM | 2.31 | 2.78 | 2.79 | 3.17 | 1.92 | 2.96 | 2.42 | 1.31 |
), ArticleFig(id=1245407878543159344, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=表3, caption=
多种算法状态数据预测指标展示对比
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| 方法 | 平均绝对百分比误差/% |
| 07-01 | 07-02 | 07-03 | 07-04 | 07-05 | 07-06 | 07-07 | 07-08 |
| 小波LASSO | 3.80 | 2.17 | 3.48 | 3.53 | 4.71 | 4.05 | 5.63 | 1.24 |
| LSTM | 2.41 | 2.93 | 3.66 | 4.22 | 2.06 | 3.09 | 3.25 | 1.79 |
| STL-LSTM | 3.02 | 2.39 | 2.82 | 3.22 | 7.09 | 3.59 | 2.79 | 2.38 |
| 小波-LSTM | 2.31 | 2.78 | 2.79 | 3.17 | 1.92 | 2.96 | 2.42 | 1.31 |
), ArticleFig(id=1245407878668988472, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=EN, label=Table 4, caption=
Display of prediction performance metrics for two algorithms on preceding and subsequent data segments
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| 算法 | 平均绝对百分比误差/% |
| 前30个数据点 | 后66个数据点 |
| 小波+LASSO | 1.59 | 2.42 |
| 小波+LSTM | 4.11 | 2.09 |
| LSTM | 4.31 | 2.40 |
), ArticleFig(id=1245407878769651779, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407863632409488, language=CN, label=表4, caption=
两种算法在前后数据段的预测效果指标展示
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| 算法 | 平均绝对百分比误差/% |
| 前30个数据点 | 后66个数据点 |
| 小波+LASSO | 1.59 | 2.42 |
| 小波+LSTM | 4.11 | 2.09 |
| LSTM | 4.31 | 2.40 |
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