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Improving Hilbert-H...
Improving Hilbert-Huang transform for energy-correlation fluctuation in hydraulic engineering
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- Lu, Shibao (författare)
- Zhejiang Univ Finance & Econ, Sch Publ Adm, Hangzhou 310018, Zhejiang, Peoples R China.
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- Zhang, Xiaoling (författare)
- City Univ Hong Kong, Dept Publ Policy, Shenzhen, Peoples R China.;City Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China.
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- Shang, Yizi (författare)
- KTH,Skolan för kemi, bioteknologi och hälsa (CBH)
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- Li, Wei (författare)
- Zhejiang Univ Finance & Econ, Sch Publ Adm, Hangzhou 310018, Zhejiang, Peoples R China.
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- Skitmore, Martin (författare)
- QUT, Sch Civil Engn & Built Environm, Brisbane, Qld 4001, Australia.
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- Jiang, Shuli (författare)
- Zhejiang Univ Finance & Econ, Sch Publ Adm, Hangzhou 310018, Zhejiang, Peoples R China.
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- Xue, Yangang (författare)
- LanZhou Inst Technol, Lanzhou 730000, Gansu, Peoples R China.
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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. (creator_code:org_t)
- Elsevier, 2018
- 2018
- Engelska.
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Ingår i: Energy. - : Elsevier. - 0360-5442 .- 1873-6785. ; 164, s. 1341-1350
- Relaterad länk:
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https://eprints.qut....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Condition-based maintenance
- Hilbert Huang transform method
- Vortex strip in draft tube
- Dynamic feature information
- False component
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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