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Estimating interharmonics by using sliding-window ESPRIT
Chalmers University of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0003-4074-9529
2008 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 23, no 1, p. 13-23Article in journal (Refereed) Published
Abstract [en]

A method is proposed for estimating interharmonic frequencies in power system voltage and current signals. The method is based on a spectrum-estimation method known as "estimation of signal parameters via rotational invariance techniques" (ESPRIT). To allow for a more reliable spectral estimation and to cover nonstationarity in the signal, a sliding-window version of ESPRIT is introduced. This paper describes the basic ESPRIT method as well as sliding-window ESPRIT. The paper discusses the application of the method to one synthetic signal and three measurement signals. It is shown that the method allows for very accurate frequency estimation of interharmonic components. The limitations of the methods, such as line splitting and spurious components, can be overcome by using the coherent information obtained from the sliding-window method. A number of remaining issues are also discussed in this paper.

Place, publisher, year, edition, pages
2008. Vol. 23, no 1, p. 13-23
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering Energy Engineering
Research subject
Electric Power Engineering; Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-5537DOI: 10.1109/TPWRD.2007.911130Scopus ID: 2-s2.0-37749003196Local ID: 3aa27110-a49c-11dc-8fee-000ea68e967bOAI: oai:DiVA.org:ltu-5537DiVA, id: diva2:978411
Note
Validerad; 2008; 20071207 (matbol)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Bollen, Math

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