Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Improving Hilbert-Huang transform for energy-correlation fluctuation in hydraulic engineering
Zhejiang Univ Finance & Econ, Sch Publ Adm, Hangzhou 310018, Zhejiang, Peoples R China..
City Univ Hong Kong, Dept Publ Policy, Shenzhen, Peoples R China.;City Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH).
Zhejiang Univ Finance & Econ, Sch Publ Adm, Hangzhou 310018, Zhejiang, Peoples R China..
Show others and affiliations
2018 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 164, p. 1341-1350Article in journal (Refereed) Published
Abstract [en]

Intense vibrations in hydraulic turbine generator unit draft tubes lead to a run-out of the unit shafting and threaten its safe and stable operation. Correct maintenance is therefore important for the safe operation of such units. This study involves assessing the condition of the turbine generator unit by extracting the feature information of its vibration signals. Based on previous research, we present an enhanced Hilbert Huang transform (HHT) method with an energy-correlation fluctuation criterion to extract feature information and effectively verify the method with simulated signals. An inspection application based on the signal from a vortex strip in the draft tube of a prototype turbine under suboptimal operating conditions indicates that this method is more effective than the traditional one, with a better component identification capability and better suited to the analysis of the complex and dynamic feature information of hydro turbines.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 164, p. 1341-1350
Keywords [en]
Condition-based maintenance, Hilbert Huang transform method, Vortex strip in draft tube, Dynamic feature information, False component
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-239466DOI: 10.1016/j.energy.2018.08.088ISI: 000448098600099Scopus ID: 2-s2.0-85054657550OAI: oai:DiVA.org:kth-239466DiVA, id: diva2:1265760
Note

QC 20181126

Available from: 2018-11-26 Created: 2018-11-26 Last updated: 2018-11-26Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Shang, Yizi
By organisation
School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH)
In the same journal
Energy
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 7 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf