Application of Enhanced Phase-Locked Loop System to the Computation of Synchrophasors
This paper introduces the application of an enhanced phase-locked loop (EPLL) system to the estimation of synchrophasors in a phasor measurement unit (PMU). The major concern is accurate estimation within off-nominal frequency operation of the system. The well-known technique based on discrete Fouri...
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| Veröffentlicht in: | IEEE transactions on power delivery 2011-01, Vol.26 (1), p.22-32 |
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| creator | Karimi-Ghartemani, M Boon-Teck Ooi Bakhshai, A |
| description | This paper introduces the application of an enhanced phase-locked loop (EPLL) system to the estimation of synchrophasors in a phasor measurement unit (PMU). The major concern is accurate estimation within off-nominal frequency operation of the system. The well-known technique based on discrete Fourier transform (DFT) can provide accurate estimation of the phasors in a three-phase balanced system. However, the negative-sequence component causes errors to the DFT estimates. The DFT cannot accomplish this task in a single-phase system. The EPLL is shown to be a solution for those shortcomings of the DFT technique, both in single-phase and in unbalanced three-phase systems, at the expense of some more complicated structure. Extensive steady-state and dynamic tests are performed and the results are presented and discussed. |
| doi_str_mv | 10.1109/TPWRD.2010.2064341 |
| format | Article |
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The major concern is accurate estimation within off-nominal frequency operation of the system. The well-known technique based on discrete Fourier transform (DFT) can provide accurate estimation of the phasors in a three-phase balanced system. However, the negative-sequence component causes errors to the DFT estimates. The DFT cannot accomplish this task in a single-phase system. The EPLL is shown to be a solution for those shortcomings of the DFT technique, both in single-phase and in unbalanced three-phase systems, at the expense of some more complicated structure. 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The major concern is accurate estimation within off-nominal frequency operation of the system. The well-known technique based on discrete Fourier transform (DFT) can provide accurate estimation of the phasors in a three-phase balanced system. However, the negative-sequence component causes errors to the DFT estimates. The DFT cannot accomplish this task in a single-phase system. The EPLL is shown to be a solution for those shortcomings of the DFT technique, both in single-phase and in unbalanced three-phase systems, at the expense of some more complicated structure. Extensive steady-state and dynamic tests are performed and the results are presented and discussed.</description><subject>Applied sciences</subject><subject>Balancing</subject><subject>Discrete Fourier transforms</subject><subject>Dynamic tests</subject><subject>Dynamical systems</subject><subject>Dynamics</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical power engineering</subject><subject>enhanced phase-locked loop (EPLL)</subject><subject>Exact sciences and technology</subject><subject>Fourier transforms</subject><subject>Frequency estimation</subject><subject>IEEE Std. C37.118-2005</subject><subject>Operation. Load control. Reliability</subject><subject>Phase locked loops</subject><subject>phasor measurement unit (PMU)</subject><subject>Phasor measurement units</subject><subject>Phasors</subject><subject>Power networks and lines</subject><subject>Power systems</subject><subject>Steady-state</subject><subject>synchrophasor</subject><subject>Tasks</subject><subject>wide-area measurement systems (WAMS)</subject><issn>0885-8977</issn><issn>1937-4208</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkF1LwzAUhoMoOKd_QG8KInjTmc8mvRxzfkDB4Ta8LFma0M62qUl7sX9v5sYuvAqHPO_LOQ8AtwhOEILp02rx9fk8wTDMGCaUUHQGRiglPKYYinMwgkKwWKScX4Ir77cQQgpTOALradfVlZJ9ZdvImmjelrJVuogWpfQ6zqz6DkNmbRctd77XTdTbqC91NLNNN_Sn3HLXqtLZLqSs89fgwsja65vjOwbrl_lq9hZnH6_vs2kWK8JEHxvBUcEgZAwLTTHVGy6QIUqEGwqUmMRgI7lMldAEmdSQIqF4Q1DCZSIIwmQMHg-9nbM_g_Z93lRe6bqWrbaDzxFBLBEcchHQ-3_o1g6uDdvlCBKIUk7JvhAfKOWs906bvHNVI90uQPnedP5nOt-bzo-mQ-jhWC29krVxwWDlT0lMkcAMp4G7O3CV1vr0zRhnlBDyC6_xhaI</recordid><startdate>201101</startdate><enddate>201101</enddate><creator>Karimi-Ghartemani, M</creator><creator>Boon-Teck Ooi</creator><creator>Bakhshai, A</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Electrical power engineering</topic><topic>Electrical power engineering</topic><topic>enhanced phase-locked loop (EPLL)</topic><topic>Exact sciences and technology</topic><topic>Fourier transforms</topic><topic>Frequency estimation</topic><topic>IEEE Std. C37.118-2005</topic><topic>Operation. Load control. Reliability</topic><topic>Phase locked loops</topic><topic>phasor measurement unit (PMU)</topic><topic>Phasor measurement units</topic><topic>Phasors</topic><topic>Power networks and lines</topic><topic>Power systems</topic><topic>Steady-state</topic><topic>synchrophasor</topic><topic>Tasks</topic><topic>wide-area measurement systems (WAMS)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Karimi-Ghartemani, M</creatorcontrib><creatorcontrib>Boon-Teck Ooi</creatorcontrib><creatorcontrib>Bakhshai, A</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005–Present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998–Present</collection><collection>IEEE/IET Electronic Library (IEL) - Journals and E-Books</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><jtitle>IEEE transactions on power delivery</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Karimi-Ghartemani, M</au><au>Boon-Teck Ooi</au><au>Bakhshai, A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Application of Enhanced Phase-Locked Loop System to the Computation of Synchrophasors</atitle><jtitle>IEEE transactions on power delivery</jtitle><stitle>TPWRD</stitle><date>2011-01</date><risdate>2011</risdate><volume>26</volume><issue>1</issue><spage>22</spage><epage>32</epage><pages>22-32</pages><issn>0885-8977</issn><eissn>1937-4208</eissn><coden>ITPDE5</coden><abstract>This paper introduces the application of an enhanced phase-locked loop (EPLL) system to the estimation of synchrophasors in a phasor measurement unit (PMU). 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| identifier | ISSN: 0885-8977 |
| ispartof | IEEE transactions on power delivery, 2011-01, Vol.26 (1), p.22-32 |
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| source | IEEE/IET Electronic Library (IEL) - Journals and E-Books |
| subjects | Applied sciences Balancing Discrete Fourier transforms Dynamic tests Dynamical systems Dynamics Electrical engineering. Electrical power engineering Electrical power engineering enhanced phase-locked loop (EPLL) Exact sciences and technology Fourier transforms Frequency estimation IEEE Std. C37.118-2005 Operation. Load control. Reliability Phase locked loops phasor measurement unit (PMU) Phasor measurement units Phasors Power networks and lines Power systems Steady-state synchrophasor Tasks wide-area measurement systems (WAMS) |
| title | Application of Enhanced Phase-Locked Loop System to the Computation of Synchrophasors |
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