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In the context of large-scale integration of wind and solar power into the grid, power system dispatch strategies faced unprecedented challenges. The volatility and randomness of wind and photovoltaic power generation significantly impacted system stability and controllability. To accurately characterize the spatiotemporal correlation of wind-solar power output and construct a practically valuable scenario set, a method for generating spatiotemporal correlated scenarios for wind-solar complementary systems was proposed, based on a coupled SGMM (seasonal Gaussian mixture model) and MCopula (mixed Copula function). Initially, the SGMM was constructed to capture the temporal correlation among wind-solar output variables. Then, the mixed Copula function was employed to describe the spatial correlation among variables. Based on the comprehensive modeling of spatiotemporal correlations, a series of uncertainty scenario sets reflecting these characteristics was generated using the Copula conditional distribution function and inverse transform sampling technique. The simulation results confirmed the effectiveness and reliability of the proposed method. The generated scenario sets not only reflected the spatiotemporal correlation characteristics and annual variation trends of wind-solar output but also better matched the historical actual sequences in terms of distance, providing strong decision-making support for power system dispatch. New perspectives and tools were offered for quantifying uncertainties in wind-solar complementary systems, which had profound theoretical and practical significance for optimizing power system dispatch strategies, reducing uncertainty risks, promoting the efficient utilization of renewable energy, and advancing the sustainable development of power systems.
, correspAuthors=Li MO, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Yi YU, Zi-xuan LIU, Guo-han ZHAO, Wan LIU, You-han DENG, Dong WEN, Li MO), CN=ArticleExt(id=1149780501440983397, articleId=1149780467446149959, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于SGMM-MCopula的风光互补系统时空相关场景生成, columnId=1156262734506353627, journalTitle=科学技术与工程, columnName=论文·电工技术, runingTitle=null, highlight=null, articleAbstract=
在风能和太阳能大规模并入电网的背景下,电力系统调度策略遭遇了前所未有的挑战。特别是风电和光伏发电的波动性和随机性特征,对系统的稳定性和可控性构成了重大影响。为了精确表征风光电站出力的时空相关特性,并构建具有实际应用价值的场景集,提出了一种基于耦合季节性高斯混合模型(SGMM)与混合Copula函数(MCopula)的风光互补系统时空相关场景生成方法。该方法首先通过构建SGMM捕捉风光出力变量时间序列间的相关特性;其次,采用混合Copula函数来描述变量之间的空间相关特性。在综合时空相关性建模的基础上,结合Copula条件分布函数与逆变换抽样技术,生成了一系列反映时空相关特征的不确定性场景集。仿真实验的结果证实了所提方法的有效性和可靠性,生成的场景集不仅能够较好地反映风光出力的时空相关特征及年内变化趋势,而且与历史实际序列在距离上更为吻合,为电力系统调度提供了强有力的决策支持。研究结果为风光互补系统的不确定性量化提供了新的视角与工具,对于优化电力系统调度策略、降低不确定性风险、促进新能源的高效利用以及推动电力系统的可持续发展,均具有深远的理论和实践意义。
, correspAuthors=莫莉, authorNote=null, correspAuthorsNote=
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余意(1989—),男,汉族,湖北黄冈人,博士,工程师。研究方向:水风光多能互补系统联合调度与控制技术及相关电碳市场理论方法。E-mail:yu_yi3@ctg.com.cn。
, authorsList=余意, 刘梓轩, 赵国汉, 刘万, 邓友汉, 温栋, 莫莉)}, authors=[Author(id=1233839084012098120, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=yu_yi3@ctg.com.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1233839084133732942, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839084012098120, language=EN, stringName=Yi YU, firstName=Yi, middleName=null, lastName=YU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 Laboratory of Hydro-Wind-Solar Multi-energy Control Coordination, Wuhan 430010, China
2 China Three Gorges Corporation Science and Technology Research Institute, Beijing 101100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1233839084276339280, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839084012098120, language=CN, stringName=余意, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 水风光多能互补联合实验室, 武汉 430010
2 中国长江三峡集团有限公司科学技术研究院, 北京 101100, bio={"content":"
余意(1989—),男,汉族,湖北黄冈人,博士,工程师。研究方向:水风光多能互补系统联合调度与控制技术及相关电碳市场理论方法。E-mail:yu_yi3@ctg.com.cn。
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余意(1989—),男,汉族,湖北黄冈人,博士,工程师。研究方向:水风光多能互补系统联合调度与控制技术及相关电碳市场理论方法。E-mail:yu_yi3@ctg.com.cn。
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1 Laboratory of Hydro-Wind-Solar Multi-energy Control Coordination, Wuhan 430010, China), AuthorCompanyExt(id=1233839083395535407, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083370369581, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3, address=
3 School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1233839084519608919, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839084351836755, language=CN, stringName=刘梓轩, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 华中科技大学土木与水利工程学院, 武汉 430074, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1233839083634610744, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, xref=3, ext=[AuthorCompanyExt(id=1233839083651387962, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083634610744, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China), AuthorCompanyExt(id=1233839083663970875, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083634610744, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 华中科技大学土木与水利工程学院, 武汉 430074)])]), Author(id=1233839084599300698, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1233839084733518430, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839084599300698, language=EN, stringName=Guo-han ZHAO, firstName=Guo-han, middleName=null, lastName=ZHAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4 China Yangtze Power Co.,Ltd., Wuhan 430010, China
5 Three Gorges Jinsha Yunchuan Hydropower Development Co., Ltd., Kunming 650204, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1233839084825793120, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839084599300698, language=CN, stringName=赵国汉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4 中国长江电力股份有限公司, 武汉 430010
5 三峡金沙江云川水电开发有限公司, 昆明 650204, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1233839083781411389, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, xref=4, ext=[AuthorCompanyExt(id=1233839083793994302, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083781411389, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4 China Yangtze Power Co.,Ltd., Wuhan 430010, China), AuthorCompanyExt(id=1233839083802382911, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083781411389, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4 中国长江电力股份有限公司, 武汉 430010)]), AuthorCompany(id=1233839083903046211, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, xref=5, ext=[AuthorCompanyExt(id=1233839083911434820, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083903046211, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
5 Three Gorges Jinsha Yunchuan Hydropower Development Co., Ltd., Kunming 650204, China), AuthorCompanyExt(id=1233839083919823430, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083903046211, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
5 三峡金沙江云川水电开发有限公司, 昆明 650204)])]), Author(id=1233839084934845028, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1233839086365102694, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839084934845028, language=EN, stringName=Wan LIU, firstName=Wan, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1233839086520291942, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839084934845028, language=CN, stringName=刘万, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3 华中科技大学土木与水利工程学院, 武汉 430074, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1233839083634610744, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, xref=3, ext=[AuthorCompanyExt(id=1233839083651387962, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083634610744, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3 华中科技大学土木与水利工程学院, 武汉 430074)])]), Author(id=1233839086654509673, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1233839086767755884, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839086654509673, language=EN, stringName=You-han DENG, firstName=You-han, middleName=null, lastName=DENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 Laboratory of Hydro-Wind-Solar Multi-energy Control Coordination, Wuhan 430010, China
2 China Three Gorges Corporation Science and Technology Research Institute, Beijing 101100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1233839086855836270, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, authorId=1233839086654509673, language=CN, stringName=邓友汉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 水风光多能互补联合实验室, 武汉 430010
2 中国长江三峡集团有限公司科学技术研究院, 北京 101100, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1233839083370369581, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, xref=1, ext=[AuthorCompanyExt(id=1233839083382952494, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083370369581, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Laboratory of Hydro-Wind-Solar Multi-energy Control Coordination, Wuhan 430010, China), AuthorCompanyExt(id=1233839083395535407, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083370369581, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 水风光多能互补联合实验室, 武汉 430010)]), AuthorCompany(id=1233839083525558834, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, xref=2, ext=[AuthorCompanyExt(id=1233839083546530356, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, companyId=1233839083525558834, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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RMSE between SGMM empirical joint probability and theoretical joint probability, figureFileSmall=yj0pCpssh1alI07fGgXFLg==, figureFileBig=yY4VU/6/HP7FpVM3Qqg5YQ==, tableContent=null), ArticleFig(id=1233839088634221204, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图1, caption=
SGMM经验联合概率和理论联合概率间的RMSE, figureFileSmall=yj0pCpssh1alI07fGgXFLg==, figureFileBig=yY4VU/6/HP7FpVM3Qqg5YQ==, tableContent=null), ArticleFig(id=1233839088739078806, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.2, caption=
Wind power output histogram and kernel density estimation curve, figureFileSmall=UBtQrrL/NZ9hKoJR9PVaaA==, figureFileBig=cOrtA2t5vuIckaFDk/aDJw==, tableContent=null), ArticleFig(id=1233839088881685145, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图2, caption=
风电出力直方图及核密度估计曲线, figureFileSmall=UBtQrrL/NZ9hKoJR9PVaaA==, figureFileBig=cOrtA2t5vuIckaFDk/aDJw==, tableContent=null), ArticleFig(id=1233839089011708570, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.3, caption=
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光伏出力直方图及核密度估计曲线, figureFileSmall=yUQ19L6Edhkbz2NP+5sEyA==, figureFileBig=ieuxArcOnf2EaAHv0TfF5A==, tableContent=null), ArticleFig(id=1233839089208840862, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.4, caption=
Empirical probability distribution and kernel density estimation distribution function diagram of wind power output, figureFileSmall=j7aseAD5K60wf/nXGXHfuw==, figureFileBig=f1YzaDWJeZR0cW0TugvI9A==, tableContent=null), ArticleFig(id=1233839089301115552, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图4, caption=
风电出力经验概率分布及核密度估计分布函数图, figureFileSmall=j7aseAD5K60wf/nXGXHfuw==, figureFileBig=f1YzaDWJeZR0cW0TugvI9A==, tableContent=null), ArticleFig(id=1233839089405973154, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.5, caption=
Empirical probability distribution and kernel density estimation distribution function diagram of photovoltaic output, figureFileSmall=IYkH1t8/mu5eJMTzdrnMYw==, figureFileBig=8DrNy9eDdwC3VhV5aFhHvQ==, tableContent=null), ArticleFig(id=1233839089477276324, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图5, caption=
光伏出力经验概率分布及核密度估计分布函数图, figureFileSmall=IYkH1t8/mu5eJMTzdrnMYw==, figureFileBig=8DrNy9eDdwC3VhV5aFhHvQ==, tableContent=null), ArticleFig(id=1233839090911728292, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.6, caption=
Wind power output scenario sets generated based on SGMM-MCopula method, figureFileSmall=xys5OXqvs6Oj0b13m0EiCQ==, figureFileBig=F9BOVn64pXsfCI9I8M9sMA==, tableContent=null), ArticleFig(id=1233839091024974501, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图6, caption=
基于SGMM-MCopula方法生成的风电出力场景集, figureFileSmall=xys5OXqvs6Oj0b13m0EiCQ==, figureFileBig=F9BOVn64pXsfCI9I8M9sMA==, tableContent=null), ArticleFig(id=1233839091163386535, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.7, caption=
Photovoltaic output scenario sets generated based on SGMM-MCopula method, figureFileSmall=oTkxw2DI7zZAs0b9Ghi3pA==, figureFileBig=aMGza6f8ZYskZ7i13AfUGQ==, tableContent=null), ArticleFig(id=1233839091247272616, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图7, caption=
基于SGMM-MCopula方法生成的光伏出力场景集, figureFileSmall=oTkxw2DI7zZAs0b9Ghi3pA==, figureFileBig=aMGza6f8ZYskZ7i13AfUGQ==, tableContent=null), ArticleFig(id=1233839091318575786, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.8, caption=
Autocorrelation coefficients of wind-solar output scenario set generated based on SGMM-MCopula method, figureFileSmall=6X7cpV3UBj8D+Q3UzRN+ZQ==, figureFileBig=M2ik+VVEVR848NtZV948gg==, tableContent=null), ArticleFig(id=1233839091461182123, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图8, caption=
基于SGMM-MCopula方法生成的光伏出力场景自相关系数, figureFileSmall=6X7cpV3UBj8D+Q3UzRN+ZQ==, figureFileBig=M2ik+VVEVR848NtZV948gg==, tableContent=null), ArticleFig(id=1233839091566039725, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.9, caption=
Autocorrelation coefficients of wind-solar power output scenario set generated based on SGMM method, figureFileSmall=8+WrM7pDBVMnNQUd3uXq1Q==, figureFileBig=q4Fez2tMjp8ykPCAXHJHig==, tableContent=null), ArticleFig(id=1233839091649925807, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图9, caption=
基于单一SGMM方法生成的风光出力场景自相关系数, figureFileSmall=8+WrM7pDBVMnNQUd3uXq1Q==, figureFileBig=q4Fez2tMjp8ykPCAXHJHig==, tableContent=null), ArticleFig(id=1233839091738006193, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Fig.10, caption=
Autocorrelation coefficients of wind-solar power output scenario set generated based on Gumbel Copula method, figureFileSmall=TAFTX1rSbKkumE/Nz3SjHA==, figureFileBig=AkIKrexayVTMSfzOW6eX2A==, tableContent=null), ArticleFig(id=1233839091826086579, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=图10, caption=
基于单一Copula方法生成的风光出力场景自相关系数, figureFileSmall=TAFTX1rSbKkumE/Nz3SjHA==, figureFileBig=AkIKrexayVTMSfzOW6eX2A==, tableContent=null), ArticleFig(id=1233839091893195445, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Table 1, caption=
The function characteristics of commonly used Copula
, figureFileSmall=null, figureFileBig=null, tableContent=
| Copula函数 | 函数特性 |
| Gaussian Copula | 对称性,无厚尾特性 |
| t-Copula | 对称性,对称厚尾性 |
| Gumbel Copula | 非对称性,上厚尾性,仅能描述变量间的非负相关性 |
| Clayton Copula | 非对称性,下厚尾性,仅能描述变量间的非负相关性 |
| Frank Copula | 对称性,对称厚尾性,能够描述随机变量间的负相关性 |
), ArticleFig(id=1233839092002247351, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=表1, caption=
常用Copula的函数特性
, figureFileSmall=null, figureFileBig=null, tableContent=
| Copula函数 | 函数特性 |
| Gaussian Copula | 对称性,无厚尾特性 |
| t-Copula | 对称性,对称厚尾性 |
| Gumbel Copula | 非对称性,上厚尾性,仅能描述变量间的非负相关性 |
| Clayton Copula | 非对称性,下厚尾性,仅能描述变量间的非负相关性 |
| Frank Copula | 对称性,对称厚尾性,能够描述随机变量间的负相关性 |
), ArticleFig(id=1233839092115493561, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Table 2, caption=
Comparison of parameter situation and square euclidean distance between mixed copula function and single Copula function
, figureFileSmall=null, figureFileBig=null, tableContent=
| 单一Copula | Gumbel Copula | Clayton Copula | Frank Copula | Gaussian Copula | t-Copula |
| 相依参数 | 1.299 | 0.551 | 2.304 | 0.357 | 0.394(16.362) |
| 平方欧氏距离 | 1.712 | 4.137 | 2.874 | 2.360 | 2.039 |
| 混合Copula | Gumbel Copula | Clayton Copula | Frank Copula | Gaussian Copula | t-Copula |
| 权重参数 | 0.347 | 9.281×10-5 | 0.048 | 0.293 | 0.313 |
| 相依参数 | 1.276 | 2.002 | 5.000 | 0.500 | 0.295(18.034) |
| 平方欧氏距离 | — | — | 1.271 | — | — |
), ArticleFig(id=1233839092249711291, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=表2, caption=
混合Copula函数与单一Copula函数的参数情况及平方欧氏距离对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 单一Copula | Gumbel Copula | Clayton Copula | Frank Copula | Gaussian Copula | t-Copula |
| 相依参数 | 1.299 | 0.551 | 2.304 | 0.357 | 0.394(16.362) |
| 平方欧氏距离 | 1.712 | 4.137 | 2.874 | 2.360 | 2.039 |
| 混合Copula | Gumbel Copula | Clayton Copula | Frank Copula | Gaussian Copula | t-Copula |
| 权重参数 | 0.347 | 9.281×10-5 | 0.048 | 0.293 | 0.313 |
| 相依参数 | 1.276 | 2.002 | 5.000 | 0.500 | 0.295(18.034) |
| 平方欧氏距离 | — | — | 1.271 | — | — |
), ArticleFig(id=1233839092367151806, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=EN, label=Table 3, caption=
Comparison results of indicators
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 能源类型 | 平均Kendall相关 系数绝对误差 | 欧氏距离 平均值 |
| 单一SGMM | 风电 | 0.164 | 3.291 |
| 光伏 | | 0.958 |
| 单一Gumbel Copula | 风电 | 0.112 | 3.781 |
| 光伏 | | 1.172 |
| SGMM-MCopula | 风电 | 0.079 | 2.881 |
| 光伏 | | 0.958 |
), ArticleFig(id=1233839092463620798, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149780467446149959, language=CN, label=表3, caption=
指标对比结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 能源类型 | 平均Kendall相关 系数绝对误差 | 欧氏距离 平均值 |
| 单一SGMM | 风电 | 0.164 | 3.291 |
| 光伏 | | 0.958 |
| 单一Gumbel Copula | 风电 | 0.112 | 3.781 |
| 光伏 | | 1.172 |
| SGMM-MCopula | 风电 | 0.079 | 2.881 |
| 光伏 | | 0.958 |
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