Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Ramsis S. Girgis"'
Publikováno v:
2020 IEEE Power & Energy Society General Meeting (PESGM).
The thermal impact of GIC on the tertiary windings of power transformers has been an area of great interest to the power Industry. This impact is caused by circulating currents induced in the $\Delta$ – connected tertiary windings as consequence to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9155eeb76ae42be95241ade85a7c2a7c
https://doi.org/10.1109/pesgm41954.2020.9281873
https://doi.org/10.1109/pesgm41954.2020.9281873
Autor:
Mats S. Bernesjo, Jonathan DeMay, Bob Arritt, Ramsis S. Girgis, Luke Van der Zel, Scott Hodgdon
Publikováno v:
2019 IEEE Power & Energy Society General Meeting (PESGM).
Two large 3-phase 345 / 115 kV Autotransformers of the same design, located at two different locations in the Northeast region of USA, have been experiencing occasional high sound level excursions of short duration. Detailed analysis performed over s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::780c6a3e7ce55bb1183db46adab4e64b
https://doi.org/10.1109/pesgm40551.2019.8973439
https://doi.org/10.1109/pesgm40551.2019.8973439
Autor:
Mats S. Bernesjo, Ramsis S. Girgis
Publikováno v:
2019 IEEE Power & Energy Society General Meeting (PESGM).
There have been a number of cases over the years where power transformers experienced what seemed to be high levels of tank vibrations. In some of these cases, the magnitudes of vibrations indicated an issue with the operation of the transformer and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e045fcab3e58688f84f413ac05b3a427
https://doi.org/10.1109/pesgm40551.2019.8973992
https://doi.org/10.1109/pesgm40551.2019.8973992
Autor:
Ramsis S. Girgis, Kiran Vedante
Publikováno v:
IEEE Electrification Magazine. 3:8-12
There has been some misconception in the electric power industry that geomagnetically induced currents (GICs) can cause significant overheating damage to the majority of medium and large power transformers. Because of the nature of GICs, the majority
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e6582b4f063cbc99591c6d2dca0fd78
https://doi.org/10.1109/mele.2015.2480355
https://doi.org/10.1109/mele.2015.2480355
Publikováno v:
IEEE Transactions on Power Delivery. 26:228-234
Strict limits of the revised noise ordinance of New York City require power transformers to have ultra-low levels at each of the frequencies of transformer noise at full load and overexcitation. This paper describes the development of the technology
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33c7d98580f8a73ce8824099b7a54154
https://doi.org/10.1109/tpwrd.2010.2070812
https://doi.org/10.1109/tpwrd.2010.2070812
Publikováno v:
2014 IEEE PES T&D Conference and Exposition.
There has been some misconception in the electric power industry that GIC has caused, and would cause, significant damaging overheating to a large majority of power transformers. A recent study by the first two authors of this paper [1] confirmed tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2074d1ca835988aee0426e0be994a30
https://doi.org/10.1109/tdc.2014.6863193
https://doi.org/10.1109/tdc.2014.6863193
Autor:
Kiran Vedante, Ramsis S. Girgis
Publikováno v:
2013 IEEE Power & Energy Society General Meeting.
When power Transformers are subjected to high levels of GIC, high levels of a short - duration magnetizing current pulse; one per cycle, results. These translate into high levels of VAR swings and significant current harmonics; which are injected int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::247efba282f9417ebafd88f03b303869
https://doi.org/10.1109/pesmg.2013.6672911
https://doi.org/10.1109/pesmg.2013.6672911
Autor:
Ramsis S. Girgis, Kiran Vedante
Publikováno v:
PES T&D 2012.
There is some misconception in the electric power industry today that geo - magnetically induced currents (GIC) have caused, and would cause, significant damage to the majority of large and medium power transformers installed on power grids in North
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::122444439fc0d37d45d71130d01046c5
https://doi.org/10.1109/tdc.2012.6281595
https://doi.org/10.1109/tdc.2012.6281595
Publikováno v:
2011 IEEE Power and Energy Society General Meeting.
Strict limits of the revised Noise Ordinance of NY City require Power Transformers to have ultra — low levels at each of the frequencies of the transformer noise at full load and over-excitation. This paper describes the development of the technolo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10879f71277acfd3d68127492b7b21e1
https://doi.org/10.1109/pes.2011.6038896
https://doi.org/10.1109/pes.2011.6038896
Autor:
Ramsis S. Girgis, Mats S. Bernesjo
Publikováno v:
IEEE PES General Meeting.
The subject of deciding on the most appropriate method and conditions for accurately measuring the noise level of a transformer has been discussed through the transformer industry for decades. It is the objective of this Paper to contribute to this e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a569c9a22cfc65c74d5d2bb8d553e74e
https://doi.org/10.1109/pes.2010.5590027
https://doi.org/10.1109/pes.2010.5590027