Zobrazeno 1 - 10
of 135
pro vyhledávání: '"W. Wiechowski"'
Publikováno v:
Ohno, T, Bak, C L, Ametani, A, Wiechowski, W & K. Sørensen, T 2013, ' Statistical Distribution of Energization Overvoltages of EHV Cables ', I E E E Transactions on Power Delivery, vol. 28, no. 3, pp. 1423-1432 . https://doi.org/10.1109/TPWRD.2013.2254726
Statistical distributions of switching overvoltages have been used for decades for the determination of insulation levels of extremely high voltage (EHV) systems. Existing statistical distributions obtained in the 1970s are for overhead lines, and st
Autor:
Claus Leth Bak, W. Wiechowski, J. Lykkegaard, Jesper M. Rasmussen, Einar Andresson, Kristin Einarsdottir
Publikováno v:
Bak, C L, Einarsdottir, K E, Andresson, E, Rasmussen, J M, Lykkegaard, J & Wiechowski, W T 2008, ' Overvoltage Protection of Large Power Transformers-A Real-Life Study Case ', IEEE Transactions on Power Delivery, vol. 23, no. 2, pp. 657-666 . https://doi.org/10.1109/TPWRD.2007.905793
This paper demonstrates the results from a detailed study of the overvoltage protection of a particular 400/150-kV 400-MVA power transformer. The work presented here is based on a real-life power system substation design and data and initiated by Dan
Autor:
J. Bock, R. Boehm, E. Bürgi, M. Cremer, Arthur R. Cushny, Walter E. Dixon, A. Ellinger, Ph. Ellinger, E. St. Faust, Alfred Fröhlich, H. Fühner, R. Gottlieb, O. Gros, A. Heffter, L. J. Henderson, W. Heubner, R. Höber, Reid Hunt, Martin Jacoby, G. Joachimoglu, A. Jodlbauer, R. Kobert, M. Kochmann, A. Loewy, R. Magnus, J. Pohl, E. Poulsson, E. Rohde, E. Rost, K. Spiro, W. Straub, P. Trendelenburg, W. Wiechowski
Dieser Buchtitel ist Teil des Digitalisierungsprojekts Springer Book Archives mit Publikationen, die seit den Anfängen des Verlags von 1842 erschienen sind. Der Verlag stellt mit diesem Archiv Quellen für die historische wie auch die disziplingesch
Publikováno v:
Ohno, T, Bak, C L, Ametani, A, Wiechowski, W & Kjærsgaard Sørensen, T 2012, ' Derivation of Theoretical Formulas of the Frequency Component Contained in the Overvoltage Related to Long EHV Cables ', I E E E Transactions on Power Delivery, vol. 27, no. 2, pp. 866-876 . https://doi.org/10.1109/TPWRD.2011.2179948
Recent studies of long extremely high-voltage (EHV) cables show the importance of performing temporary overvoltage analyses. As the switching of EHV cables can trigger temporary overvoltages, it is important to find the dominant frequency component c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ba21e4209f51b24a0a22771a4a50354
https://vbn.aau.dk/ws/files/62747383/DerivationOfTheoreticalFormulaForDominantFrequency_1_.pdf
https://vbn.aau.dk/ws/files/62747383/DerivationOfTheoreticalFormulaForDominantFrequency_1_.pdf
Publikováno v:
Gudmundsdottir, U S, Gustavsen, B, Bak, C L & Wiechowski, W 2011, ' Field Test and Simulation of a 400 kV Cross-Bonded Cable System ', I E E E Transactions on Power Delivery, vol. 25, no. 3, pp. 1403-1410 . https://doi.org/10.1109/TPWRD.2010.2084600
This paper discusses cable modeling for long high-voltage ac underground cables. In investigating the possibility of using long cables instead of overhead lines, the simulation results must be trustworthy. Therefore, model validation is of great impo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::048e883e4a2193d2a6af3c97b65ec074
https://vbn.aau.dk/da/publications/7ebeee69-aec9-4b24-a302-49d01692af13
https://vbn.aau.dk/da/publications/7ebeee69-aec9-4b24-a302-49d01692af13
Publikováno v:
Gudmundsdottir, U S, Silva, J D, Bak, C L & Wiechowski, W 2010, Double Layered Sheath in Accurate HV XLPE Cable Modeling . in Proceedings of the PES General Meeting 2010 . IEEE Press, PES General Meeting 2010, Minneapolis, United States, 25/07/2010 . https://doi.org/10.1109/PES.2010.5589893
This paper discusses modelling of high voltage AC underground cables. For long cables, when crossbonding points are present, not only the coaxial mode of propagation is excited during transient phenomena, but also the intersheath mode. This causes in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::853ed3ac608b1bffcfe7305cbc726352
https://vbn.aau.dk/ws/files/34577710/Double_layered_sheath_in_accurate_HV_XLPE_cable_modeling.pdf
https://vbn.aau.dk/ws/files/34577710/Double_layered_sheath_in_accurate_HV_XLPE_cable_modeling.pdf
Autor:
Martin Randrup Knardrupgard, Claus Leth Bak, Filipe Miguel Faria da Silva, Unnur Stella Gudmundsdottir, W. Wiechowski
Publikováno v:
da Silva, F M F, Bak, C L, Gudmundsdottir, U S, Wiechowski, W & Knardrupgård, M R 2010, ' Methods to Minimize Zero-Missing Phenomenon ', I E E E Transactions on Power Delivery, vol. 25, no. 4, pp. 2923-2930 . https://doi.org/10.1109/TPWRD.2010.2045010
With the increasing use of high-voltage AC cables at transmission levels, phenomena such as current zero-missing start to appear more often in transmission systems. Zero-missing phenomenon can occur when energizing cable lines with shunt reactors. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f93fc2ecd5d222cf2d5fc17caa0008bb
https://vbn.aau.dk/da/publications/3ab7a338-fd2a-447e-8e7f-1652fc8cc463
https://vbn.aau.dk/da/publications/3ab7a338-fd2a-447e-8e7f-1652fc8cc463
Autor:
Filipe Miguel Faria da Silva, U. S. Guomundsdottir, Martin Randrup Knardrupgard, W. Wiechowski, Claus Leth Bak
Publikováno v:
Bak, C L, da Silva, F M F, Gudmundsdottir, U S, Wiechowski, W T & Knardrupgård, M R 2009, Use of a Pre-Insertion Resistor to Minimize Zero-Missing Phenomenon and Switching Overvoltages . in Proceedings of the IEEE Power and Energy Society General Meeting . IEEE, pp. 1-7, IEEE Power and Energy Society General Meeting, 2009. PES '09. IEEE, Calgary, Alberta, Canada, 26/07/2009 . https://doi.org/10.1109/PES.2009.5275992
With the increasing use of High-Voltage Cables, which have different electric characteristics from Overhead Lines, phenomenon like current zero-missing start to appear more often on the transmission systems. Methods to prevent zero-missing phenomenon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::174b5fee7e904cae7c52362815585d34
https://vbn.aau.dk/ws/files/401995371/Use_of_a_pre_insertion_resistor_to_minimize_zero_missing_phenomenon_and_switching_overvoltages.pdf
https://vbn.aau.dk/ws/files/401995371/Use_of_a_pre_insertion_resistor_to_minimize_zero_missing_phenomenon_and_switching_overvoltages.pdf
Autor:
P.B. Eriksen, W. Wiechowski
Publikováno v:
2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.
The Danish power system is characterised by a high share of wind power production. Most of the wind power has so far been distributed onshore and connected to the lower voltage levels. The recent tendency is to group it in large offshore wind farms.
Publikováno v:
2008 IEEE/PES Transmission and Distribution Conference and Exposition.
Within European countries, Denmark was been at the forefront of replacing the transmission lines with cables. The project was supplying the power to the greater Copenhagen area in early 1990s. Recently, the Danish TSO Energinet.dk has initiated a res