Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 192 records found  previous11 - 20nextend  jump to record: Search took 0.02 seconds. 
11. New Digital Algorithms for On-line Determination of Symmetrical Components in Power Systems / Lobos, T ; Schneider, E [ENY-ARTICLE-2010-293]
Using the Fourier method the Kalman theory and the Walsh functions, non-recursive algorithms for the on-line determination of the basic waveforms of the symmetrical components in three-phase power systems are introduced, investigated and compared. [...]
http://zet10.ipee.pwr.wroc.pl/record/366/files/
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12. Comparison between DFT, Adaptive Window DFT and EDFT for Power Quality Frequency Spectrum Analysis / Grossoni, M ; Giarnetti, S ; Leccese, F ; Leonowicz, Z [DOI: 10.13140/2.1.3741.1849] [ENY-ARTICLE-2010-292]
Spectral leakage and picket-fence effects associated with the system fundamental frequency variation and improperly selected sampling time window prevents a direct application of the DFT algorithm with a constant sampling rate. [...]
http://zet10.ipee.pwr.wroc.pl/record/364/files/
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13. Wavelets and Hilbert Transform for detection of short disturbances in electrical power networks / Caciotta, M ; Giarnetti, S ; Leccese, F ; Leonowicz, Z [ENY-ARTICLE-2010-287]
In electrical energy power network, disturbances can cause problems in electronic devices therefore their monitoring is fundamental to properly design the protection and compensation devices. [...]
http://zet10.ipee.pwr.wroc.pl/record/357/files/
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14. Inclined plane test, influence of transformer power / Chrzan, K L [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-281]
The inclined plane method is one of a few other tests that prove the material resistance to erosion and tracking caused by surface discharges. [...]
http://zet10.ipee.pwr.wroc.pl/record/349/files/
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15. Hygroscopic properties of natural pollutants on silicone rubber surfaces / Chrzan, K L ; Greyling, C [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-280]
The aim of this research is to determine whether hydrophilic and hygroscopic particulate pollutants on glass and silicone insulator surfaces maintain their electrical and water absorption properties, once low molecular weight siloxanes have migrated through the pollution layer. [...]
http://zet10.ipee.pwr.wroc.pl/record/348/files/
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16. Artificial rain test of outdoor long rod insulators / Chrzan, K L ; Streubel, H [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-279]
Due to the decrease of industrial contamination emission nearly the whole territory of Poland belongs to the pollution class light. [...]
http://zet10.ipee.pwr.wroc.pl/record/347/files/
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17. Effect of impulse polarity on the flashover voltage of polluted cap and pin insulators / Chrzan, K L ; Schwarz, H ; Haeusler, H [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-278]
The lightning impulse flashover voltage on clean and polluted cap and pin insulators under high humidity conditions were measured. [...]
http://zet10.ipee.pwr.wroc.pl/record/346/files/
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18. Time-varying signal parameters for assessment of disturbances in wind energy systems / Lobos, T ; Schegner, P ; Sikorski, T [ENY-ARTICLE-2009-270]
This paper proposes some extended method for assessment of transient disturbances in wind energy systems. [...]
http://zet10.ipee.pwr.wroc.pl/record/338/files/
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19. Detection of Short Transients and Interruptions using the Hilbert Transform / Caciotta, M ; Giarnetti, S ; Leccese, F ; Leonowicz, Z [ENY-ARTICLE-2009-269]
In electrical energy power networks, disturbances can cause problems in electronic devices so their monitoring is fundamental in Power Quality. [...]
http://zet10.ipee.pwr.wroc.pl/record/337/files/
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20. Power Quality in Wind Power Systems / Leonowicz, Z [ENY-ARTICLE-2009-268]
Wind power generation systems influence power quality in a specific way making important the need for detailed and accurate evaluation of disturbances caused by wind generators. [...]
http://zet10.ipee.pwr.wroc.pl/record/336/files/
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