Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Unnur Stella Gudmundsdottir"'
Autor:
Unnur Stella Gudmundsdottir
Publikováno v:
CIGRE Green Books ISBN: 9783030804053
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1d485ec9d4b735d761e2b175895a3fd
https://doi.org/10.1007/978-3-030-80406-0_2
https://doi.org/10.1007/978-3-030-80406-0_2
Autor:
Unnur Stella Gudmundsdottir
Publikováno v:
Electric Power Systems Research. 115:50-56
It has been discussed in various papers, how lack of proximity effect in modelling affects simulations and gives inaccurate results at high frequencies. This paper describes a method for how to include the proximity effect calculations in EMT 1 -base
Publikováno v:
IEEE Transactions on Power Systems. 28:4867-4874
Electrothermal coordination (ETC) is introduced for cable based transmission grids. ETC is the term covering operation and planning of transmission systems based on temperature, instead of current. ETC consists of one part covering the load condition
Publikováno v:
IEEE Transactions on Power Delivery. 28:1909-1917
This paper presents an algorithm for the estimation of the time-dependent temperature evolution of power cables, when real-time temperature measurements of the cable surface or a point within its vicinity are available. The thermal resistivity and sp
Publikováno v:
Journal of International Council on Electrical Engineering. 3:158-163
This paper investigates a basic characteristic of fault surge in a long cable system based on EMTP simulations. It is made clear from the simulation results that the sheath over-voltage is higher on a cross-bonded cable than that on a normal-bonded c
Autor:
O. M. K. K. Nanayakkara, Claus Leth Bak, Christian Flytkjær Jensen, Athula Rajapakse, Unnur Stella Gudmundsdottir
Publikováno v:
Jensen, C F, Nanayakkarab, K, Rajapakse, A, Gudmundsdottir, U S & Bak, C L 2014, ' Online Fault Location on AC Cables in Underground Transmission Systems using Sheath Currents ', Electric Power Systems Research, vol. 115, EPSR-D-13-01278, pp. 74–79 . https://doi.org/10.1016/j.epsr.2014.04.002
This paper studies online travelling wave methods for fault location on a crossbonded cable system using sheath currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::750a9a1d8e90c7fe276764965ccfa19d
https://vbn.aau.dk/da/publications/4b76374b-1071-4441-85a3-f72e14027ddf
https://vbn.aau.dk/da/publications/4b76374b-1071-4441-85a3-f72e14027ddf
Publikováno v:
Jensen, C F, Bak, C L, Gudmundsdottir, U S & Abur, A 2014, ' Field test and theoretical analysis of electromagnetic pulse propagation velocity on crossbonded cable systems ', I E E E Transactions on Power Delivery, vol. 29, no. 3, pp. 1028-1035 . https://doi.org/10.1109/TPWRD.2014.2300533
In this paper, the electromagnetic pulse propagation velocity on a three-phase cable system, consisting of three single core (SC) cables in flat formation with an earth continuity conductor is under study. The propagation velocity is an important par
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d918da3f89e98b83ed7bd8074fdd41ba
https://vbn.aau.dk/da/publications/3d61ff00-8520-4941-a6c6-0014c6adcbdd
https://vbn.aau.dk/da/publications/3d61ff00-8520-4941-a6c6-0014c6adcbdd
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:
Faria da Silva, F F, Wiechowski, W, Bak, C L & Gudmundsdottir, U S 2010, Full Scale Test on a 100km, 150kV AC Cable . in Proceedings of the CIGRE Session 2010 . CIGRE (International Council on Large Electric Systems), CIGRE Session 2010, Paris, France, 22/08/2010 .
Aalborg University
Aalborg University
This paper presents some of the results obtained from the electrical measurements on a 99.7 km, 150 kV three-phase AC cable, connecting 215 MW offshore wind farm Horns Rev 2, located in Denmark west coast, to Denmark's 400 kV transmission network. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3c109deb2ae77da834b1f049ebf20d80
https://vbn.aau.dk/da/publications/655efe0d-059c-4296-8ea1-efe1fc039282
https://vbn.aau.dk/da/publications/655efe0d-059c-4296-8ea1-efe1fc039282
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