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Now showing items 11-20 of 2010
Time-frequency analysis combining wavelets and the envelope technique for fault identification in rotary machines
(2013-03-18)
Nowadays the method based on demodulation by envelope finds wide application in industry as a technique for evaluation of bearings and other components in rotating machinery. In recent years the application of Wavelets for ...
A wavelet-based restricted earth-fault power transformer differential protection
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA ELÉTRICA E DE COMPUTAÇÃO, 2022-01-20)
In order to enhance power transformer differential protection, especially with respect
to its reliability and speed, several schemes have been proposed in the last years. Faults
inside the transformer protection zone may ...
Scaling of fault damage zones with displacement and the implications for fault growth processes
(AMER GEOPHYSICAL UNION, 2011)
Knowledge of the spatial extent of damage surrounding fault zones is important for understanding crustal fluid flow and also for understanding the physical processes and mechanics by which fault zones develop with slip. ...
Fault Current Limiter Using YBCO Coated Conductor-The Limiting Factor and Its Recovery Time
(Institute of Electrical and Electronics Engineers (IEEE), 2009-06-01)
A fault current limiter (FCL) based on an arrangement of parallel connected high temperature superconducting tapes constituting a limiter element was designed and tested in 220 V line for a fault current peak between 1 kA ...
Fault Current Limiter Using YBCO Coated Conductor-The Limiting Factor and Its Recovery Time
(Institute of Electrical and Electronics Engineers (IEEE), 2009-06-01)
A fault current limiter (FCL) based on an arrangement of parallel connected high temperature superconducting tapes constituting a limiter element was designed and tested in 220 V line for a fault current peak between 1 kA ...
Fault identification in distribution lines using intelligent systems and statistical methods
(2006-12-01)
The main objective involved with this paper consists of presenting the results obtained from the application of artificial neural networks and statistical tools in the automatic identification and classification process ...
Fault identification in distribution lines using intelligent systems and statistical methods
(2006-12-01)
The main objective involved with this paper consists of presenting the results obtained from the application of artificial neural networks and statistical tools in the automatic identification and classification process ...
Location of single line-to-ground faults on distribution feeders using voltage measurements
(2006-12-01)
This paper proposes a dedicated algorithm for lation of single line-to-ground faults in distribution systems. The proposed algorithm uses voltage and current phasors measured at the substation level, voltage magnitudes ...
Stator inter-turn faults diagnosis in induction motors using zero-sequence signal injection
(Institution of Engineering and Technology, 2020-12)
This study presents a strategy for stator inter-turn faults diagnosis in induction motors (IMs) operating under timevariable load and time-variable speed conditions. The strategy consists in injecting a zero-sequence ...