Article(id=1154429762425578369, tenantId=1146029695717560320, journalId=1146119893612605453, issueId=1154429758340326256, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1704643200000, receivedDateStr=2024-01-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1753167103630, onlineDateStr=2025-07-22, pubDate=1718812800000, pubDateStr=2024-06-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753167103630, onlineIssueDateStr=2025-07-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753167103630, creator=13701087609, updateTime=1753167103630, updator=13701087609, issue=Issue{id=1154429758340326256, tenantId=1146029695717560320, journalId=1146119893612605453, year='2024', volume='42', issue='6', pageStart='710', pageEnd='852', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1753167102656, creator=13701087609, updateTime=1753694592332, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1156642210440401438, tenantId=1146029695717560320, journalId=1146119893612605453, issueId=1154429758340326256, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1156642210440401439, tenantId=1146029695717560320, journalId=1146119893612605453, issueId=1154429758340326256, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=781, endPage=788, ext={EN=ArticleExt(id=1154429762853397379, articleId=1154429762425578369, tenantId=1146029695717560320, journalId=1146119893612605453, language=EN, title=Subsynchronous oscillation detection in wind power system using multivariate empirical mode decomposition, columnId=null, journalTitle=Renewable Energy Resources, columnName=null, runingTitle=null, highlight=null, articleAbstract=
With the largescale integration of wind power, power system subsynchronous oscillation (SSO)events occur frequently, which seriously threatens the safe and stable operation of the power grid. The accurate detection of SSO in wind power gridconnected system is of great significance to ensure the stable operation of the power systems. Most of the existing SSO detection methods are singlechannel methods, which are difficult to take into account the global SSO characteristics of the systems. Therefore, this paper proposes a SSO detection method for wind power gridconnected system based on multivariate empirical mode decomposition (MEMD). Firstly, the multivariate empirical mode decomposition is performed on the measurements of wind power gridconnected points, and then the IMF components with SSO mode are screened out via TeagerKaiser energy operator (TKEO). Then, the HilbertHuang transform (HHT) is used to identify the SSO frequency and damping ratio. Finally, the proposed detection method is analyzed by the improved 4machine 2area system simulation data, and the results verify the effectiveness of the proposed method.
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随着风电的大规模并网,电力系统次同步振荡(SSO)事件频发,严重威胁电网的安全稳定运行。实现风电并网系统 SSO 的准确检测,对保障系统稳定运行具有重要意义。现有的基于量测数据的 SSO 检测方法多为单通道方法,难以兼顾系统全局SSO 特性。为此,文章提出了一种基于多元经验模态分解(MEMD)的风电并网系统 SSO 检测方法。首先,对风电并网点量测数据进行多元经验模态分解,进而借助 TeagerKaiser 能量算子(TKEO)筛选出含SSO 模式的 IMF分量;然后,采用希尔伯特黄变换(HHT)辨识次同步振荡频率及阻尼比;最后,结合改进的4机2区域测试系统的仿真数据对所提 SSO 检测方法进行测试,结果验证了所提方法的有效性。
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于鹏(1976–),男,高级工程师,主要从事新能源电力系统规划、分析、运行与控制技术工作。E-mail: Yu_Peng2627@126.com。
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于鹏(1976–),男,高级工程师,主要从事新能源电力系统规划、分析、运行与控制技术工作。E-mail: Yu_Peng2627@126.com。
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1 Power Dispatching and Control Center State Grid Liaoning Electric Power Co., Ltd. Shenyang 110006 China), AuthorCompanyExt(id=1154429813226987899, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, companyId=1154429813214404985, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 国网辽宁省电力有限公司 电力调度控制中心 辽宁 沈阳 110006)]), AuthorCompany(id=1154429813285708159, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, xref=2, ext=[AuthorCompanyExt(id=1154429813289902463, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, companyId=1154429813285708159, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 School of Electrical Engineering Shenyang University of Technology Shenyang 110870 China), AuthorCompanyExt(id=1154429813294096768, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, companyId=1154429813285708159, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 沈阳工业大学 电气工程学院 辽宁 沈阳 110870)])], figs=[ArticleFig(id=1154429816674705947, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 1, caption=
Flow chart of subsynchronous oscillation detection method based on MEMD, figureFileSmall=YqpjcyyxU3Jn6gqc7vgN9Q==, figureFileBig=3XdWhgjXpo2sa9SHk93nkg==, tableContent=null), ArticleFig(id=1154429816746009117, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 1, caption=
基于 MEMD 的次同步振荡检测方法流程图, figureFileSmall=YqpjcyyxU3Jn6gqc7vgN9Q==, figureFileBig=3XdWhgjXpo2sa9SHk93nkg==, tableContent=null), ArticleFig(id=1154429816880226847, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 2, caption=
Topology diagram of the improved 4-machine 2-area system, figureFileSmall=cVnjKeTr7RlFcB1+meToWg==, figureFileBig=tLIRXfIBDNsT7TJz0quYdw==, tableContent=null), ArticleFig(id=1154429816951530016, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 2, caption=
改进的 4 机 2 区域系统拓扑图, figureFileSmall=cVnjKeTr7RlFcB1+meToWg==, figureFileBig=tLIRXfIBDNsT7TJz0quYdw==, tableContent=null), ArticleFig(id=1154429817001861665, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 3, caption=
Voltage and current measurements during SSO, figureFileSmall=yExhpvj74KbcP7xXya/dOg==, figureFileBig=vuonknOlKpgOm/IwGierqQ==, tableContent=null), ArticleFig(id=1154429817052193315, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 3, caption=
SSO 期间电压、电流量测数据, figureFileSmall=yExhpvj74KbcP7xXya/dOg==, figureFileBig=vuonknOlKpgOm/IwGierqQ==, tableContent=null), ArticleFig(id=1154429817102524965, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 4, caption=
FFT spectrums of voltage and current, figureFileSmall=3w4XJ61qVVYzc6NGX1VohA==, figureFileBig=yMq8Q87FFmq9pBuxarcKAQ==, tableContent=null), ArticleFig(id=1154429817169633831, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 4, caption=
电压、电流的 FFT 结果, figureFileSmall=3w4XJ61qVVYzc6NGX1VohA==, figureFileBig=yMq8Q87FFmq9pBuxarcKAQ==, tableContent=null), ArticleFig(id=1154429817245131305, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 5, caption=
Decomposition results of three-phase voltage and current using MEMD, figureFileSmall=0tIwIWU126u7Qy1So69i9A==, figureFileBig=dNJnDbqn6GW1LIhvIj5wRQ==, tableContent=null), ArticleFig(id=1154429817312240171, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 5, caption=
三相电压、电流的 MEMD 分解结果, figureFileSmall=0tIwIWU126u7Qy1So69i9A==, figureFileBig=dNJnDbqn6GW1LIhvIj5wRQ==, tableContent=null), ArticleFig(id=1154429817375154733, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 6, caption=
Energy weights of each IMF component decomposed by MEMD, figureFileSmall=TeoPer0qvjXtGJL6UZ7aOw==, figureFileBig=CvEXW/NBMxxPF4QcOCN/ZQ==, tableContent=null), ArticleFig(id=1154429817442263598, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 6, caption=
MEMD 分解各 IMF 分量的能量权重, figureFileSmall=TeoPer0qvjXtGJL6UZ7aOw==, figureFileBig=CvEXW/NBMxxPF4QcOCN/ZQ==, tableContent=null), ArticleFig(id=1154429817500983856, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 7, caption=
Decomposition results of three-phase voltage using EMD, figureFileSmall=WXBKMOuB0OXV8yXEJQfYWQ==, figureFileBig=P53VED0ocUx+NY4YvE7Pkg==, tableContent=null), ArticleFig(id=1154429817547121202, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 7, caption=
三相电压的 EMD 分解结果, figureFileSmall=WXBKMOuB0OXV8yXEJQfYWQ==, figureFileBig=P53VED0ocUx+NY4YvE7Pkg==, tableContent=null), ArticleFig(id=1154429817614230068, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 8, caption=
Decomposition results of three-phase current using EMD, figureFileSmall=AhSxPyBvGL4jYiz0fxvy5A==, figureFileBig=oVtJte3lFdx6BcHBqkYmYA==, tableContent=null), ArticleFig(id=1154429817710699062, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 8, caption=
三相电流的 EMD 分解结果, figureFileSmall=AhSxPyBvGL4jYiz0fxvy5A==, figureFileBig=oVtJte3lFdx6BcHBqkYmYA==, tableContent=null), ArticleFig(id=1154429817777807928, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 9, caption=
Energy weights of each IMF component decomposed by EMD, figureFileSmall=4CRfQkcce0UmojM/NLPjUA==, figureFileBig=n36nNAIZcG+4YBuyWtoVzA==, tableContent=null), ArticleFig(id=1154429817836528186, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 9, caption=
EMD 分解各 IMF 分量的能量权重, figureFileSmall=4CRfQkcce0UmojM/NLPjUA==, figureFileBig=n36nNAIZcG+4YBuyWtoVzA==, tableContent=null), ArticleFig(id=1154429817907831357, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Fig. 10, caption=
Comparison of computational efficiency, figureFileSmall=Jf1xbKFTYGrle5VoJH9lzw==, figureFileBig=dgRIfqZdeLzELjAab0gGbg==, tableContent=null), ArticleFig(id=1154429817991717438, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=图 10, caption=
计算效率对比, figureFileSmall=Jf1xbKFTYGrle5VoJH9lzw==, figureFileBig=dgRIfqZdeLzELjAab0gGbg==, tableContent=null), ArticleFig(id=1154429818050437696, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Table 1, caption=
Parameters of single DFIG, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 | 参数 | 数值 |
| 容量/MW | 1.5 | 转子电抗/p.u. | 0.22 |
| 定子电阻/p.u. | 0.018 | 励磁电抗/p.u. | 3.1 |
| 转子电阻/p.u. | 0.031 | 定子电抗/p.u. | 2.68 |
), ArticleFig(id=1154429818130129474, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=表 1, caption=
单台 DFIG 参数, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 | 参数 | 数值 |
| 容量/MW | 1.5 | 转子电抗/p.u. | 0.22 |
| 定子电阻/p.u. | 0.018 | 励磁电抗/p.u. | 3.1 |
| 转子电阻/p.u. | 0.031 | 定子电抗/p.u. | 2.68 |
), ArticleFig(id=1154429818197238340, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Table 2, caption=
Identification results of each IMF component, figureFileSmall=null, figureFileBig=null, tableContent=
| using HHT |
| IMF | 频率/Hz | 阻尼比/% |
| 单通 道 | 多通道 均值 | PRONY | 单通 道 | 多通道 均值 | PRONY |
| IMF1 | ${V}_{\mathrm{a}}$ | 50.217 | 50.204 | 50.124 | 0.759 | 0.762 | 0.698 |
| ${V}_{\mathrm{b}}$ | 50.187 | 0.769 |
| ${V}_{\mathrm{c}}$ | 50.195 | 0.754 |
| ${I}_{\mathrm{a}}$ | 50.188 | 0.766 |
| ${I}_{\mathrm{b}}$ | 50.222 | 0.761 |
| ${I}_{\mathrm{e}}$ | 50.216 | 0.763 |
| IMF2 | ${V}_{\mathrm{a}}$ | 30.152 | 30.199 | 30.068 | -0.887 | -0.811 | -0.743 |
| ${V}_{\mathrm{b}}$ | 30.145 | -0.946 |
| ${V}_{\mathrm{c}}$ | 30.284 | -0.862 |
| ${I}_{\mathrm{a}}$ | 30.229 | -0.721 |
| ${I}_{\mathrm{b}}$ | 30.182 | -0.784 |
| ${I}_{\mathrm{c}}$ | 30.201 | -0.668 |
), ArticleFig(id=1154429818264347206, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=表 2, caption=
各 IMF 分量的辨识结果, figureFileSmall=null, figureFileBig=null, tableContent=
| using HHT |
| IMF | 频率/Hz | 阻尼比/% |
| 单通 道 | 多通道 均值 | PRONY | 单通 道 | 多通道 均值 | PRONY |
| IMF1 | ${V}_{\mathrm{a}}$ | 50.217 | 50.204 | 50.124 | 0.759 | 0.762 | 0.698 |
| ${V}_{\mathrm{b}}$ | 50.187 | 0.769 |
| ${V}_{\mathrm{c}}$ | 50.195 | 0.754 |
| ${I}_{\mathrm{a}}$ | 50.188 | 0.766 |
| ${I}_{\mathrm{b}}$ | 50.222 | 0.761 |
| ${I}_{\mathrm{e}}$ | 50.216 | 0.763 |
| IMF2 | ${V}_{\mathrm{a}}$ | 30.152 | 30.199 | 30.068 | -0.887 | -0.811 | -0.743 |
| ${V}_{\mathrm{b}}$ | 30.145 | -0.946 |
| ${V}_{\mathrm{c}}$ | 30.284 | -0.862 |
| ${I}_{\mathrm{a}}$ | 30.229 | -0.721 |
| ${I}_{\mathrm{b}}$ | 30.182 | -0.784 |
| ${I}_{\mathrm{c}}$ | 30.201 | -0.668 |
), ArticleFig(id=1154429818327261768, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=EN, label=Table 3, caption=
Identification results of each method in noise environment, figureFileSmall=null, figureFileBig=null, tableContent=
| SNR/dB | MEMD | EMD | PRONY |
| 频率 | 阻尼比 | 频率 | 阻尼比 | 频率 | 阻尼比 |
| % | | % | | % |
| 60 | 50.248 | 0.778 | 50.286 | 0.578 | 50.452 | 0.536 |
| 30.187 | -0.775 | 30.205 | -0.721 | 30.337 | -0.581 |
| 45 | 50.312 | 0.774 | 50.338 | 0.683 | 50.482 | 0.584 |
| 30.203 | -0.761 | 30.218 | -0.703 | 30.396 | -0.338 |
| 30 | 50.318 | 0.747 | 50.474 | 0.607 | 50.557 | 0.551 |
| 30.229 | -0.725 | 30.234 | -0.715 | 30.568 | -0.428 |
), ArticleFig(id=1154429818398564938, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1154429762425578369, language=CN, label=表 3, caption=
噪声环境下各方法的辨识结果, figureFileSmall=null, figureFileBig=null, tableContent=
| SNR/dB | MEMD | EMD | PRONY |
| 频率 | 阻尼比 | 频率 | 阻尼比 | 频率 | 阻尼比 |
| % | | % | | % |
| 60 | 50.248 | 0.778 | 50.286 | 0.578 | 50.452 | 0.536 |
| 30.187 | -0.775 | 30.205 | -0.721 | 30.337 | -0.581 |
| 45 | 50.312 | 0.774 | 50.338 | 0.683 | 50.482 | 0.584 |
| 30.203 | -0.761 | 30.218 | -0.703 | 30.396 | -0.338 |
| 30 | 50.318 | 0.747 | 50.474 | 0.607 | 50.557 | 0.551 |
| 30.229 | -0.725 | 30.234 | -0.715 | 30.568 | -0.428 |
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