Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | 2021 29th Iranian Conference on Electrical Engineering, ICEE 2021 |
| Herausgeber (Verlag) | Institute of Electrical and Electronics Engineers Inc. |
| Seiten | 279-283 |
| Seitenumfang | 5 |
| ISBN (elektronisch) | 9781665433655 |
| Publikationsstatus | Veröffentlicht - 18 Mai 2021 |
| Veranstaltung | 29th Iranian Conference on Electrical Engineering, ICEE 2021 - Tehran, Iran Dauer: 18 Mai 2021 → 20 Mai 2021 |
Publikationsreihe
| Name | 2021 29th Iranian Conference on Electrical Engineering, ICEE 2021 |
|---|
Abstract
The insulation system of converter transformers is more stressed electrically than of AC transformers while both types use the same insulation materials. However, the structure of insulation around valve winding in converter transformers is designed for withstanding AC and DC electric fields. In the DC field, electrical conductivity is the most important factor influencing the electric field distribution. Moreover, the electric conductivity is strongly dependent on the temperature and electric field. In this article, the dielectric parameters (DC conductivity and relative permittivity) were used in the COMSOL model to investigate the variation of electric field distribution at different temperatures and AC, DC and hybrid fields. The electrical conductivity of oil and pressboard was defined constant for simplicity. The results showed the great effect of temperature and DC voltage percentage on the electric field strength of pressboards used in the converter transformers.
ASJC Scopus Sachgebiete
- Energie (insg.)
- Energieanlagenbau und Kraftwerkstechnik
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Physik und Astronomie (insg.)
- Instrumentierung
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2021 29th Iranian Conference on Electrical Engineering, ICEE 2021. Institute of Electrical and Electronics Engineers Inc., 2021. S. 279-283 (2021 29th Iranian Conference on Electrical Engineering, ICEE 2021).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Investigation of electric stresses caused by applying DC and AC voltages on the insulation of converter transformers
AU - Sharifi, Aref
AU - Akbari, Asghar
AU - Werle, Peter
AU - Rasti, Keyvan
PY - 2021/5/18
Y1 - 2021/5/18
N2 - The insulation system of converter transformers is more stressed electrically than of AC transformers while both types use the same insulation materials. However, the structure of insulation around valve winding in converter transformers is designed for withstanding AC and DC electric fields. In the DC field, electrical conductivity is the most important factor influencing the electric field distribution. Moreover, the electric conductivity is strongly dependent on the temperature and electric field. In this article, the dielectric parameters (DC conductivity and relative permittivity) were used in the COMSOL model to investigate the variation of electric field distribution at different temperatures and AC, DC and hybrid fields. The electrical conductivity of oil and pressboard was defined constant for simplicity. The results showed the great effect of temperature and DC voltage percentage on the electric field strength of pressboards used in the converter transformers.
AB - The insulation system of converter transformers is more stressed electrically than of AC transformers while both types use the same insulation materials. However, the structure of insulation around valve winding in converter transformers is designed for withstanding AC and DC electric fields. In the DC field, electrical conductivity is the most important factor influencing the electric field distribution. Moreover, the electric conductivity is strongly dependent on the temperature and electric field. In this article, the dielectric parameters (DC conductivity and relative permittivity) were used in the COMSOL model to investigate the variation of electric field distribution at different temperatures and AC, DC and hybrid fields. The electrical conductivity of oil and pressboard was defined constant for simplicity. The results showed the great effect of temperature and DC voltage percentage on the electric field strength of pressboards used in the converter transformers.
KW - Conductivity
KW - Converter transformer
KW - Electric field
KW - FEM
KW - HVDC
KW - Oil
KW - Pressboard
KW - Temperature
KW - Valve winding
UR - http://www.scopus.com/inward/record.url?scp=85117460228&partnerID=8YFLogxK
U2 - 10.1109/ICEE52715.2021.9544148
DO - 10.1109/ICEE52715.2021.9544148
M3 - Conference contribution
AN - SCOPUS:85117460228
T3 - 2021 29th Iranian Conference on Electrical Engineering, ICEE 2021
SP - 279
EP - 283
BT - 2021 29th Iranian Conference on Electrical Engineering, ICEE 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th Iranian Conference on Electrical Engineering, ICEE 2021
Y2 - 18 May 2021 through 20 May 2021
ER -