Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 10 records found  Search took 0.01 seconds. 
1.
CT saturation correction based on the estimated CT saturation time constant / Rebizant, W ; Wiszniewski, A ; Schiel, L [I08/2008/I-021] [ENY-ARTICLE-2008-203]
A new method for CT saturation correction is presented that is based on an on-line estimation of the CT magnetizing inductance. [...]
http://zet10.ipee.pwr.wroc.pl/record/257/files/
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2.
Correction of Current Transformer Transient Performance / Wiszniewski, A ; Rebizant, W ; Schiel, L [ENY-ARTICLE-2008-202]
If a current transformer (CT) saturates while transforming the heavy primary current, in each period, there are sections when the magnetic core is unsaturated and transformation is correct, and when it is saturated, it causes enormous errors. [...]
http://zet10.ipee.pwr.wroc.pl/record/256/files/
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3.
Prediction of CT saturation period for differential relay adaptation purposes / Rebizant, W ; Hayder, T ; Schiel, L [ENY-ARTICLE-2008-147]
A new approach to CT saturation assessment is presented in the paper. [...]
http://zet10.ipee.pwr.wroc.pl/record/186/files/
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4.
Current Transformer Saturation Detection with Genetically Optimized Neural Networks / Rebizant, W ; Bejmert, D [ENY-ARTICLE-2008-146]
Application of the genetic algorithm (GA) for optimization of artificial neural network (ANN) based CT saturation detector is presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/185/files/
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5.
Distance Digital Algorithm Immune to Saturation of Current Transformer / Wiszniewski, A ; Szafran, J [I08/1989/I-044] [ENY-ARTICLE-2008-206]
Saturation of current transformers due to slowly decaying primary current D. [...]
http://zet10.ipee.pwr.wroc.pl/record/260/files/
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6.
Ultrasaturation Phenomenon in Power Transformers—Myths and Reality / Wiszniewski, A ; Rebizant, W ; Bejmert, D ; Schiel, L [ENY-ARTICLE-2008-199]
In this paper, the ultrasaturation phenomenon of power transformers during their energization is studied. [...]
http://zet10.ipee.pwr.wroc.pl/record/253/files/
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7.
Calculation of Current Transformer Transient Errors / Wiszniewski, A [ENY-ARTICLE-2008-205]
Transient saturation of current transformers may cause maloperation of protective devices. [...]
http://zet10.ipee.pwr.wroc.pl/record/259/files/
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8.
Impact of Secondary Burden and X/R Ratio on CT Saturation / Sawko, P [ENY-ARTICLE-2008-141]
Proper selection of a CT (Current Transducer) is required for a good protection scheme operation. [...]
http://zet10.ipee.pwr.wroc.pl/record/179/files/
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9.
Simulative Analysis of a New Type Wide Range Estimator of Protection Criterion Values / Szafran, J ; Rebizant, W ; Michalik, M [I08/1998/I-119] [ENY-ARTICLE-2008-160]
In the paper a new adaptive estimator of protection criterion values insensitive to wide range power system frequency changes is proposed and analysed. [...]
http://zet10.ipee.pwr.wroc.pl/record/207/files/
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10.
A multi-criteria differential transformer relay based on fuzzy logic / Wiszniewski, A ; Kasztenny, B [ENY-ARTICLE-2008-197]
This paper presents a digital relay scheme for the primary protection of power transformers. [...]
http://zet10.ipee.pwr.wroc.pl/record/251/files/
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