Results 21 to 30 of about 4,488,266 (309)
An Adaptive Frequency Sampling Algorithm for Dynamic Condensation-Based Frequency Response Analysis
Mathematics, 2023 This paper proposed an efficient and adaptive frequency sampling algorithm for frequency response analysis using dynamic condensation-based reduced-order modeling.
Jaehun Lee +3 more
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Applied Sciences, 2022 Frequency Response Analysis (FRA) technique has been recognized by worldwide utilities as a matured technology to assess the mechanical integrity of power transformers.
Salem Mgammal Al-Ameri +7 more
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Comprehensive Study on Transformer Fault Detection via Frequency Response Analysis
IEEE Access, 2023 The sudden outage of a transformer due to a fault can cause irreparable damage to the electricity industry. Hence, by conducting momentarily inspections of the transformer’s condition, faults can be promptly detected, and the transformer can be ...
Seyed Ebrahim Hosseini Kakolaki +3 more
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IEEE Access, 2021 Frequency Response Analysis (FRA) is the most reliable technique currently used to evaluate the mechanical integrity of power transformers. While the measurement devices have been well developed over the past two decades, interpretation of the FRA ...
Salem Mgammal Awadh Nasser Al-Ameri +6 more
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Frequency Response Analysis Tool [PDF]
, 2014 Frequency response has received a lot of attention in recent years at the national level, which culminated in the development and approval of North American Electricity Reliability Corporation (NERC) BAL-003-1 Frequency Response and Frequency Bias Setting Reliability Standard.
Pavel V. Etingov +2 more
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Analysis of output frequencies of nonlinear systems [PDF]
, 2007 In this paper, an algorithm is derived for the determination of the output frequency ranges of nonlinear systems, which extends previous results on the output frequencies of nonlinear systems to a more general situation.
Billings, S.A., Lang, Z.Q., Wu, X.F.
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Linear parameter estimation for multi-degree-of-freedom nonlinear systems using nonlinear output frequency-response functions [PDF]
, 2006 The Volterra series approach has been widely used for the analysis of nonlinear systems. Based on the Volterra series, a novel concept named Nonlinear Output Frequency Response Functions (NOFRFs) was proposed by the authors.
Billings, S.A., Lang, Z.Q., Peng, Z.K.
core +4 more sources
Transformer winding type recognition based on FRA data and a support vector machine model
High Voltage, 2020 Frequency response analysis (FRA) is regarded as the most effective technique to detect mechanical faults of transformers. Over the years, FRA measurement data have been collected by utilities into transformer asset databases.
Xiaozhou Mao +5 more
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Mechanical Engineering JournalPeriodic structures are known to have specific frequency ranges called band gaps, where the transmission of elastic waves is suppressed. Research on band gap formation in mechanical structures has recently gained considerable attention, and there is a ...
Yuta KONNO, Takahiro TOMIOKA
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Numerical treatment of seismic accelerograms and of inelastic seismic structural responses using harmonic wavelets [PDF]
, 2007 The harmonic wavelet transform is employed to analyze various kinds of nonstationary signals common in aseismic design. The effectiveness of the harmonic wavelets for capturing the temporal evolution of the frequency content of strong ground motions is ...
Burrus C. S. +6 more
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