Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 10 records found  Search took 0.02 seconds. 
1.
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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2.
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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3.
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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4.
Carrier generation and the switching phenomenon: further theoretical description / Swistacz, B [ENY-ARTICLE-2008-034]
In this paper the problem of the current flow between the two electrodes is further continued. [...]
http://zet10.ipee.pwr.wroc.pl/record/41/files/
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5.
New Criteria of Voltage Stability Margin for the Purpose of Load Shedding / Wiszniewski, A [ENY-ARTICLE-2008-201]
Voltage instability is a phenomenon which often contributes to the development of power system disturbances. [...]
http://zet10.ipee.pwr.wroc.pl/record/255/files/
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6.
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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7.
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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8.
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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9.
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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10.
Fuzzy Set Approach to Transformer Differential Relay / Wiszniewski, A ; Kasztenny, B [ISBN: 0-85296-559-1] [ENY-ARTICLE-2008-210]
In the process of decision making by a transformer differential relay often occurs a measure of uncertainty. [...]
http://zet10.ipee.pwr.wroc.pl/record/264/files/
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