Zobrazeno 1 - 10
of 74
pro vyhledávání: '"H. Moscicka-Grzesiak"'
Autor:
Krzysztof Walczak, Piotr Przybyłek, Hubert Morańda, Wojciech Sikorski, H. Moscicka-Grzesiak, Mateusz Cybulski
Publikováno v:
IEEE Access, Vol 9, Pp 150322-150329 (2021)
The article concerns a method of drying cellulose insulation of distribution transformers with the use of synthetic ester. This method uses the high solubility of water in the ester compared to other dielectric liquids. The method is based on the str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cea51c14f2186a15b9a83be62e27a1d
https://doi.org/10.1109/access.2021.3125840
https://doi.org/10.1109/access.2021.3125840
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 27:1538-1545
This article deals with the application of synthetic ester for drying cellulose insulation of distribution transformers. The most important advantages and disadvantages of the commonly used methods of drying transformer insulation on site are discuss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70efc9346cbada14adf4f26f139197a3
https://doi.org/10.1109/tdei.2020.008749
https://doi.org/10.1109/tdei.2020.008749
Publikováno v:
Energies, Vol 13, Iss 3467, p 3467 (2020)
Energies
Volume 13
Issue 13
Energies
Volume 13
Issue 13
This paper presents the results of laboratory tests of cellulose insulation drying with the use of synthetic ester. The effectiveness of the drying process was investigated depending on the initial moisture of cellulose samples (2%, 3%, and 4%), este
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ee8b8075a02402b468d23e680f6d66a
https://www.mdpi.com/1996-1073/13/13/3467
https://www.mdpi.com/1996-1073/13/13/3467
Publikováno v:
Energies, Vol 13, Iss 3, p 647 (2020)
Energies
Volume 13
Issue 3
Energies
Volume 13
Issue 3
The article presents the results of comparative investigations of partial discharges in two insulation systems
aramid-enhanced cellulose paper-mineral oil, and pure cellulose paper-mineral oil. Partial discharges were investigated in a diagonal
aramid-enhanced cellulose paper-mineral oil, and pure cellulose paper-mineral oil. Partial discharges were investigated in a diagonal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02d7db5719e25a70fffd06aa367f60ed
https://www.mdpi.com/1996-1073/13/3/647
https://www.mdpi.com/1996-1073/13/3/647
Publikováno v:
Energies, Vol 12, Iss 20, p 3874 (2019)
Energies
Volume 12
Issue 20
Energies
Volume 12
Issue 20
A high level of insulation moisture in a transformer increases the breakdown probability and forces a reduction of its load. Therefore, there is a need to dry the transformer insulation. For technical reasons, there are some restrictions on the use o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::acd3612587bda99cc9cf58d7d23bb23b
https://www.mdpi.com/1996-1073/12/20/3874
https://www.mdpi.com/1996-1073/12/20/3874
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 22:3405-3412
This paper refers to the bubble effect in transformer bushings. The bubble effect consists in releasing water from moistened cellulose insulation after exceeding a critical temperature. The most dangerous result is a pressure increase that leads to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23a2d686185a460a3a02f15249a32cc7
https://doi.org/10.1109/tdei.2015.004934
https://doi.org/10.1109/tdei.2015.004934
Autor:
H. Moscicka-Grzesiak, K. Feser, Krzysztof Walczak, Piotr Przybyłek, Zbigniew Nadolny, Hubert Morańda, Jarosław Gielniak, A. Graczkowski, Stanislaw Gubanski
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 20:982-987
The article presents the results of extensive investigations aimed at determining the moisture content in a large population of power transformers (161 units). The project was carried out during the period of 2003-2011 in Poland, Germany, and Sweden.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a3a81e143f32589812b91224e5fe26a
https://doi.org/10.1109/tdei.2013.6518968
https://doi.org/10.1109/tdei.2013.6518968
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 19:1879-1883
This paper elucidates the question whether bubble effect can possibly take place in the insulation of OIP (Oil Impregnated Paper) type of bushings. The investigations were performed on a bushing insulation model and indicated to a possibility that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcfbd4fb0fcda099a5a875706d165e14
https://doi.org/10.1109/tdei.2012.6396943
https://doi.org/10.1109/tdei.2012.6396943
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 18:1647-1650
The purpose of this work is to evaluate the influence of the cellulose polymerization degree (DP) on the dielectric response. The research objects were new and aged pressboard samples of the polymerization degree 1435 and 406, respectively. The autho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ddb250fb8a7d1966205ce659d8cea0c
https://doi.org/10.1109/tdei.2011.6032835
https://doi.org/10.1109/tdei.2011.6032835
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 17:913-919
The main reason of the research was to show the very important role of the dielectric losses in the insulation, during the initiation of water release from paper insulation, which is known as the bubble effect. The authors' thesis is that the dielect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4537306ae4d6c8063b2cd5ea0b5fdab7
https://doi.org/10.1109/tdei.2010.5492266
https://doi.org/10.1109/tdei.2010.5492266