Article(id=1192850377662935880, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1190985985849705466, articleNumber=null, orderNo=null, doi=10.19457/j.1001-2095.dqcd25586, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1704038400000, receivedDateStr=2024-01-01, revisedDate=1710432000000, revisedDateStr=2024-03-15, acceptedDate=null, acceptedDateStr=null, onlineDate=1762327292122, onlineDateStr=2025-11-05, pubDate=1747670400000, pubDateStr=2025-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762327292122, onlineIssueDateStr=2025-11-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762327292122, creator=13701087609, updateTime=1762327292122, updator=13701087609, issue=Issue{id=1190985985849705466, tenantId=1146029695717560320, journalId=1189987059142926344, year='2025', volume='55', issue='5', pageStart='3', pageEnd='96', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1761882786476, creator=13701087609, updateTime=1762390467120, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1193115352897909350, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1190985985849705466, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1193115352897909351, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1190985985849705466, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=71, endPage=78, ext={EN=ArticleExt(id=1192850377914594121, articleId=1192850377662935880, tenantId=1146029695717560320, journalId=1189987059142926344, language=EN, title=Research on the Islanding Detection Method in Photovoltaic System Based on Reactive Power Disturbance and Characteristic Kurtosis, columnId=null, journalTitle=Electric Drive, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The islanding detection method is a necessary method for grid-connected PV systems,but,the current islanding detection method is prone to misjudgement when encountering grid operation states such as high-resistance short-circuit ground faults and large-capacity load casting. For this reason,an islanding detection method based on reactive power perturbation and featured kurtosis was proposed based on analyzing the difference between the power at the grid point in the islanding operation state and other grid operation states. The method firstly used the three-phase voltage amplitude offset rate at the grid point to realize the starting criterion of active reactive power injection in PV system. Then,the apparent power waveform at the grid point was obtained,and after the normalization operation was performed to obtain the normalized apparent power (NAP) waveform,variational modal decomposition algorithm was used to decompose NAP at 8 layers,and the time-frequency component at layer 5 was obtained as the feature detection component. And then the feature detection component was characterized by a featured kurtosis to achieve islanding detection. Finally,a typical PV grid-connected system was constructed using Matlab simulation platform,and the effectiveness of the proposed method was tested through the working conditions of islanding operation with different quality factor loads,different high-resistance short-circuit ground faults,large-capacity load switching,and lightning strike faults,and so on.
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孤岛检测方法是光伏系统并网的必备方法,然而,在遇到电网高阻短路接地故障以及大容量负荷投切等运行状态时,目前的孤岛检测方法容易发生误判。为此,在分析并网点处功率在孤岛运行状态和其他电网运行状态之间差异的基础上,提出一种基于无功功率扰动和特征峭度的光伏系统孤岛检测方法。该方法首先利用并网点三相电压幅值偏移率实现光伏系统无功功率主动注入的启动判据;然后,获取并网点处的视在功率波形,在对其进行归一化操作获得归一视在功率波形后,利用变分模态分解算法对归一视在功率波形进行8层的分解,并获取第5层时频分量为特征检测分量;进而,对特征检测分量进行特征峭度计算,通过特征峭度值的大小实现孤岛运行状态检测;最后,利用Matlab仿真平台搭建了典型光伏并网系统,并通过不同品质因数负载孤岛运行、不同高阻短路接地故障、大容量负荷投切以及雷击故障等工况测试了所提方法的有效性。
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, authorsList=罗美玲, 韩忠修, 于晓军, 吴建云, 黄伟兵)}, authors=[Author(id=1193114828492472653, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=693400664@qq.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1193114828580553039, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, authorId=1193114828492472653, language=EN, stringName=Meiling LUO, firstName=Meiling, middleName=null, lastName=LUO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan750001,Ningxia,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1193114828685410640, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, authorId=1193114828492472653, language=CN, stringName=罗美玲, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 国网宁夏电力有限公司,宁夏 银川 750001, bio={"content":"
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罗美玲(1982—),女,本科,正高级工程师,主要研究方向为继电保护,Email:693400664@qq.com
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2 Guodian Nanrui Nanjing Control System Co.,Ltd.,Nanjing 210000,Jiangsu,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1193114828987400533, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, authorId=1193114828777685330, language=CN, stringName=韩忠修, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 国电南瑞南京控制系统有限公司,江苏 南京 210000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1193114828370837832, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, xref=2, ext=[AuthorCompanyExt(id=1193114828379226441, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, companyId=1193114828370837832, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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光伏电站孤岛检测技术研究[D]. 杭州: 浙江大学,
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Power System Protection and Control,
2022,
50(3):41-50., articleTitle=Simultaneous detection method for photovoltaic islanding and low-voltage-ride-through based on harmonic characteristics, refAbstract=null)], funds=[Fund(id=1193114833953456560, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, awardId=5229NX230003, language=CN, fundingSource=国网宁夏电力有限公司科技项目(5229NX230003), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1193114828257591621, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, xref=1, ext=[AuthorCompanyExt(id=1193114828270174534, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, companyId=1193114828257591621, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan750001,Ningxia,China), AuthorCompanyExt(id=1193114828278563143, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, companyId=1193114828257591621, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 国网宁夏电力有限公司,宁夏 银川 750001)]), AuthorCompany(id=1193114828370837832, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, xref=2, ext=[AuthorCompanyExt(id=1193114828379226441, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, companyId=1193114828370837832, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Guodian Nanrui Nanjing Control System Co.,Ltd.,Nanjing 210000,Jiangsu,China), AuthorCompanyExt(id=1193114828387615050, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, companyId=1193114828370837832, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 国电南瑞南京控制系统有限公司,江苏 南京 210000)])], figs=[ArticleFig(id=1193114831726281080, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.1, caption=
Diagram of the grid-connected PV system, figureFileSmall=Nqawa3d2LaCxncxXMVj35A==, figureFileBig=R1QfcrN3sLIyBBqUSMKkGw==, tableContent=null), ArticleFig(id=1193114831805972859, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图1, caption=
光伏系统并网示意图, figureFileSmall=Nqawa3d2LaCxncxXMVj35A==, figureFileBig=R1QfcrN3sLIyBBqUSMKkGw==, tableContent=null), ArticleFig(id=1193114831956967806, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.2, caption=
Test signal and amplitude-frequency diagram of Ps, figureFileSmall=5KH6zjtYSMe7gIFXCIfAOA==, figureFileBig=Fy+tdr6mKZaEZsFvTzO61Q==, tableContent=null), ArticleFig(id=1193114832045048192, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图2, caption=
Ps测试信号及其频谱图, figureFileSmall=5KH6zjtYSMe7gIFXCIfAOA==, figureFileBig=Fy+tdr6mKZaEZsFvTzO61Q==, tableContent=null), ArticleFig(id=1193114832166683009, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.3, caption=
Topology of test system, figureFileSmall=9lJtuOUwfWNVwpjRToabxQ==, figureFileBig=PrOUQNs141mNidOTwB6THQ==, tableContent=null), ArticleFig(id=1193114832242180482, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图3, caption=
测试系统拓扑图, figureFileSmall=9lJtuOUwfWNVwpjRToabxQ==, figureFileBig=PrOUQNs141mNidOTwB6THQ==, tableContent=null), ArticleFig(id=1193114832309289347, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.4, caption=
Waveforms of PV output power,voltage and frequency, figureFileSmall=kaz/odMVvqn7bBUFj7QpgA==, figureFileBig=PuV1QKmbqczttkpt2jSkBA==, tableContent=null), ArticleFig(id=1193114832426729860, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图4, caption=
光伏输出功率、PCC处电压和频率波形图, figureFileSmall=kaz/odMVvqn7bBUFj7QpgA==, figureFileBig=PuV1QKmbqczttkpt2jSkBA==, tableContent=null), ArticleFig(id=1193114832489644421, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.5, caption=
Frequency of PCC when different loads with different quality factors are islanded, figureFileSmall=GIaEoD+gOx+wLS1NFvSRmw==, figureFileBig=Wf2JVuzp0Tap7UceL70OpA==, tableContent=null), ArticleFig(id=1193114832565141894, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图5, caption=
不同品质因数负载孤岛切换时PCC处的频率, figureFileSmall=GIaEoD+gOx+wLS1NFvSRmw==, figureFileBig=Wf2JVuzp0Tap7UceL70OpA==, tableContent=null), ArticleFig(id=1193114832640639370, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.6, caption=
Frequency of PCC when different loads with different quality factors are islanded and added into reactive power, figureFileSmall=kHmzaA4oAGdoNvQnQQYJWg==, figureFileBig=+cb1NWQPvhFiWhpzol0ZCA==, tableContent=null), ArticleFig(id=1193114832711942539, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图6, caption=
不同品质因数负载孤岛切换并主动注入无功功率时PCC处的频率, figureFileSmall=kHmzaA4oAGdoNvQnQQYJWg==, figureFileBig=+cb1NWQPvhFiWhpzol0ZCA==, tableContent=null), ArticleFig(id=1193114832779051407, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.7, caption=
Detection results of different loads in islanded mode, figureFileSmall=VA/RF0YkA2QZyYpoq7z2mw==, figureFileBig=WQbAICEmwsGJ6QIR+zVr7g==, tableContent=null), ArticleFig(id=1193114832862937489, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图7, caption=
不同品质因数负载孤岛切换检测结果, figureFileSmall=VA/RF0YkA2QZyYpoq7z2mw==, figureFileBig=WQbAICEmwsGJ6QIR+zVr7g==, tableContent=null), ArticleFig(id=1193114832930046355, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.8, caption=
Detection results of different high impedance faults, figureFileSmall=Jo6+Ha16LGM/ObatVIOEaA==, figureFileBig=v41zkUf4495FzshJ4ORCeg==, tableContent=null), ArticleFig(id=1193114832984572309, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图8, caption=
不同高阻接地故障检测结果, figureFileSmall=Jo6+Ha16LGM/ObatVIOEaA==, figureFileBig=v41zkUf4495FzshJ4ORCeg==, tableContent=null), ArticleFig(id=1193114833055875480, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.9, caption=
Detection results of different load switches, figureFileSmall=5k1NWVj682VVNM9+JnBxJw==, figureFileBig=vKAZFg21E20ArxLKI6oRww==, tableContent=null), ArticleFig(id=1193114833127178650, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图9, caption=
不同容量负载切换检测结果, figureFileSmall=5k1NWVj682VVNM9+JnBxJw==, figureFileBig=vKAZFg21E20ArxLKI6oRww==, tableContent=null), ArticleFig(id=1193114833219453340, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.10, caption=
Phase a ground fault and ground resistance is 100 Ω, figureFileSmall=Zv494OAX0pN887SUJnymkg==, figureFileBig=EapxmYlon+s+lj2OSw858g==, tableContent=null), ArticleFig(id=1193114833282367904, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图10, caption=
a相接地故障且接地电阻为100 Ω, figureFileSmall=Zv494OAX0pN887SUJnymkg==, figureFileBig=EapxmYlon+s+lj2OSw858g==, tableContent=null), ArticleFig(id=1193114833353671074, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.11, caption=
Phase a ground fault and ground resistance is 1 000 Ω, figureFileSmall=qoOiRnMkzmbPnW+rejp2BA==, figureFileBig=LLyNJvrZq9vq27DfWufQEA==, tableContent=null), ArticleFig(id=1193114833445945764, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图11, caption=
a相接地故障且接地电阻为1 000 Ω, figureFileSmall=qoOiRnMkzmbPnW+rejp2BA==, figureFileBig=LLyNJvrZq9vq27DfWufQEA==, tableContent=null), ArticleFig(id=1193114833521443240, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Fig.12, caption=
Silo operational status, figureFileSmall=fzM+YYsAuzcE1EOpUBqq8w==, figureFileBig=jcP1+EGnXGhuon0FupGuTQ==, tableContent=null), ArticleFig(id=1193114833592746410, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=图12, caption=
孤岛运行状态, figureFileSmall=fzM+YYsAuzcE1EOpUBqq8w==, figureFileBig=jcP1+EGnXGhuon0FupGuTQ==, tableContent=null), ArticleFig(id=1193114833676632492, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=EN, label=Tab.1, caption=
Parameters of test system
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设备 | 参数 | 值 | 参数 | 值 | 参数 | 值 |
| 负荷L2 | 有功 功率 | 30 MW | 感性无功功率 | 2 Mvar | 容性无功功率 | 0 Mvar |
| 负荷L3 | 有功 功率 | 4 MW | 感性无功功率 | 1 Mvar | 容性无功功率 | 1 Mvar |
| 负荷L11 | 电阻 | 2 500 Ω | 电感 | 6.631 5 H | 电容 | 1.061 μF |
| 负荷L12 | 电阻 | 2 500 Ω | 电感 | 2.652 6 H | 电容 | 2.652 6 μF |
| 负荷L13 | 电阻 | 2 500 Ω | 电感 | 1.657 9 H | 电容 | 4.424 4 μF |
), ArticleFig(id=1193114833743741357, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1192850377662935880, language=CN, label=表1, caption=
测试系统参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设备 | 参数 | 值 | 参数 | 值 | 参数 | 值 |
| 负荷L2 | 有功 功率 | 30 MW | 感性无功功率 | 2 Mvar | 容性无功功率 | 0 Mvar |
| 负荷L3 | 有功 功率 | 4 MW | 感性无功功率 | 1 Mvar | 容性无功功率 | 1 Mvar |
| 负荷L11 | 电阻 | 2 500 Ω | 电感 | 6.631 5 H | 电容 | 1.061 μF |
| 负荷L12 | 电阻 | 2 500 Ω | 电感 | 2.652 6 H | 电容 | 2.652 6 μF |
| 负荷L13 | 电阻 | 2 500 Ω | 电感 | 1.657 9 H | 电容 | 4.424 4 μF |
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