Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 14 records found  1 - 10next  jump to record: Search took 0.02 seconds. 
1. TSC transformer with asymmetric source and load / Mach, V ; Gono, R ; Leonowicz, Z [ENY-ARTICLE-2013-351]
The paper analyses unconventional connection of a three-phase transformer with asymmetric source and load. [...]
http://zet10.ipee.pwr.wroc.pl/record/439/files/
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2. LONG-TERM STUDY OF CHANGES OF PHYSICO-CHEMICAL PARAMETERS OF TRANSFORMER OILS / Jaroszewski, M ; Pietruszewicz, M [ENY-ARTICLE-2012-329]
The average age of transformers in service is increasing and approaching the end of design life. [...]
http://zet10.ipee.pwr.wroc.pl/record/416/files/
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3. 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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4. 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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5. 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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6. 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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7. 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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8. 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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9. 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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10. Influence of thin layers on static electrification phenomena of materials for power transformers / Rottenberg, W ; Fleszynski, J ; Beroual, A [I07/1998/I-401] [ENY-ARTICLE-2008-088]
The static electrification phenomenon is investigated, using a test cell with a rotating metallic disk coated on both sides with thin layers (0,5 and 2 pm) of conducting, semiconducting and insulating materials, obtained by magnetron sputtering. [...]
http://zet10.ipee.pwr.wroc.pl/record/106/files/
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