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Article: FILTER FOR OPTIMAL TEMPORAL RESOLUTION IN PARTIAL DISCHARGE MEASUREMENTS.

TitleFILTER FOR OPTIMAL TEMPORAL RESOLUTION IN PARTIAL DISCHARGE MEASUREMENTS.
Authors
Issue Date1986
Citation
Ieee Transactions On Electrical Insulation, 1986, v. EI-21 n. 2, p. 183-188 How to Cite?
AbstractIn partial discharge measuring instruments, a band-pass filter is always incorporated for noise reduction. There is a tradeoff between SNR and temporal resolution. The problem of optimizing the temporal resolution in the presence of noise is analyzed and a Wiener filter is proposed as the solution. Methods to implement the filter are given and results of computer evaluation studies are presented. This study shows that the Wiener filter is superior for both temporal and amplitude resolution, and especially for resolving overlapped discharges of opposite polarity. This is partly because the study was based on a completely determined impulse response function and an accurately known noise spectral density. It is noted that the superior performance demonstrated should be considered with some reservations. The disadvantage of the method is that the filter frequency response has to be adjusted for each different application, making the hardware and software more complicated.
Persistent Identifierhttp://hdl.handle.net/10722/154856
ISSN

 

DC FieldValueLanguage
dc.contributor.authorLeung, CHen_US
dc.date.accessioned2012-08-08T08:30:56Z-
dc.date.available2012-08-08T08:30:56Z-
dc.date.issued1986en_US
dc.identifier.citationIeee Transactions On Electrical Insulation, 1986, v. EI-21 n. 2, p. 183-188en_US
dc.identifier.issn0018-9367en_US
dc.identifier.urihttp://hdl.handle.net/10722/154856-
dc.description.abstractIn partial discharge measuring instruments, a band-pass filter is always incorporated for noise reduction. There is a tradeoff between SNR and temporal resolution. The problem of optimizing the temporal resolution in the presence of noise is analyzed and a Wiener filter is proposed as the solution. Methods to implement the filter are given and results of computer evaluation studies are presented. This study shows that the Wiener filter is superior for both temporal and amplitude resolution, and especially for resolving overlapped discharges of opposite polarity. This is partly because the study was based on a completely determined impulse response function and an accurately known noise spectral density. It is noted that the superior performance demonstrated should be considered with some reservations. The disadvantage of the method is that the filter frequency response has to be adjusted for each different application, making the hardware and software more complicated.en_US
dc.languageengen_US
dc.relation.ispartofIEEE transactions on electrical insulationen_US
dc.titleFILTER FOR OPTIMAL TEMPORAL RESOLUTION IN PARTIAL DISCHARGE MEASUREMENTS.en_US
dc.typeArticleen_US
dc.identifier.emailLeung, CH:chleung@eee.hku.hken_US
dc.identifier.authorityLeung, CH=rp00146en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0022706323en_US
dc.identifier.volumeEI-21en_US
dc.identifier.issue2en_US
dc.identifier.spage183en_US
dc.identifier.epage188en_US
dc.identifier.scopusauthoridLeung, CH=7402612415en_US

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