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Conference Paper: Harmonic analysis of power system signals using a new regularized adaptive windowed lomb periodogram

TitleHarmonic analysis of power system signals using a new regularized adaptive windowed lomb periodogram
Authors
KeywordsConstant bandwidth
Constant window
Frequency resolutions
Interharmonic frequencies
Intersection of confidence intervals
Issue Date2010
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1800112
Citation
The 1st International Conference on Green Circuits and Systems (ICGCS 2010), Shanghai, China, 21-23 June 2010. In Proceedings of the 1st ICGCS, 2010, p. 567-572 How to Cite?
AbstractThis paper proposes a new regularized adaptive windowed Lomb periodogram (RAWLP) method for time-frequency analysis of non-stationary power signals. It extends the conventional Lomb periodogram by estimating the periodogram locally using the weighted least-squares (WLS) estimator. Instead of employing one constant window in WLS, variable window bandwidth is adaptively selected by the intersection of confidence intervals (ICI) method to achieve a better tradeoff between time resolution and frequency resolution. Furthermore, regularization techniques are incorporated in the AWLP to further improve its performance by reducing the variance of the estimator. Simulation results show that the proposed RAWLP method has superior performance over windowed Lomb periodogram with one constant bandwidth for estimating the harmonic and interharmonic frequencies in power systems. © 2010 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/143313
ISBN
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, ZGen_HK
dc.contributor.authorChan, SCen_HK
dc.date.accessioned2011-11-22T08:29:47Z-
dc.date.available2011-11-22T08:29:47Z-
dc.date.issued2010en_HK
dc.identifier.citationThe 1st International Conference on Green Circuits and Systems (ICGCS 2010), Shanghai, China, 21-23 June 2010. In Proceedings of the 1st ICGCS, 2010, p. 567-572en_HK
dc.identifier.isbn978-1-4244-6878-2-
dc.identifier.urihttp://hdl.handle.net/10722/143313-
dc.description.abstractThis paper proposes a new regularized adaptive windowed Lomb periodogram (RAWLP) method for time-frequency analysis of non-stationary power signals. It extends the conventional Lomb periodogram by estimating the periodogram locally using the weighted least-squares (WLS) estimator. Instead of employing one constant window in WLS, variable window bandwidth is adaptively selected by the intersection of confidence intervals (ICI) method to achieve a better tradeoff between time resolution and frequency resolution. Furthermore, regularization techniques are incorporated in the AWLP to further improve its performance by reducing the variance of the estimator. Simulation results show that the proposed RAWLP method has superior performance over windowed Lomb periodogram with one constant bandwidth for estimating the harmonic and interharmonic frequencies in power systems. © 2010 IEEE.en_HK
dc.languageengen_US
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1800112-
dc.relation.ispartofProceedings of the International Conference on Green Circuits and Systems, ICGCS 2010en_HK
dc.rightsProceedings of the International Conference on Green Circuits and Systems. Copyright © IEEE.-
dc.rights©2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectConstant bandwidth-
dc.subjectConstant window-
dc.subjectFrequency resolutions-
dc.subjectInterharmonic frequencies-
dc.subjectIntersection of confidence intervals-
dc.titleHarmonic analysis of power system signals using a new regularized adaptive windowed lomb periodogramen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailZhang, ZG:zgzhang@eee.hku.hken_HK
dc.identifier.emailChan, SC:scchan@eee.hku.hken_HK
dc.identifier.authorityZhang, ZG=rp01565en_HK
dc.identifier.authorityChan, SC=rp00094en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1109/ICGCS.2010.5542997en_HK
dc.identifier.scopuseid_2-s2.0-77956597905en_HK
dc.identifier.hkuros174341-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77956597905&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage567en_HK
dc.identifier.epage572en_HK
dc.publisher.placeUnited States-
dc.description.otherThe 1st International Conference on Green Circuits and Systems (ICGCS 2010), Shanghai, China, 21-23 June 2010. In Proceedings of the 1st ICGCS, 2010, p. 567-572-
dc.identifier.scopusauthoridZhang, ZG=8597618700en_HK
dc.identifier.scopusauthoridChan, SC=13310287100en_HK

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