Details
Originalsprache | Englisch |
---|---|
Aufsatznummer | 1657965 |
Seiten (von - bis) | 532-538 |
Seitenumfang | 7 |
Fachzeitschrift | IEEE Transactions on Dielectrics and Electrical Insulation |
Jahrgang | 13 |
Ausgabenummer | 3 |
Publikationsstatus | Veröffentlicht - Juni 2006 |
Abstract
Dielectric spectroscopy in the wide frequency range of 1 mHz to 1 kHz has been used to study the polarization and conduction phenomena in insulating liquids. The dielectric spectroscopy of mineral oil and ester oil at different conditions, i.e. temperatures and electric fields, has been measured. It came out that at low frequencies, space charge polarization changes the permittivity of insulating liquid and at very low frequencies, the consideration of a RC parallel model for the dielectric behavior of insulating liquids is not adequate. The results indicate that the permittivity of insulating liquid increases with aging duration and therefore it can be used as a diagnosis parameter for insulating liquids. The calculation of the activation energy of the conduction process shows that consideration of single activation energy for compensation of temperature effect on dielectric loss for dielectric spectroscopy in the wide frequency range is not perfect.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
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in: IEEE Transactions on Dielectrics and Electrical Insulation, Jahrgang 13, Nr. 3, 1657965, 06.2006, S. 532-538.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Dielectric behavior of insulating liquids at very low frequency
AU - Shayegani Akmal, Amir Abbas
AU - Borsi, H.
AU - Gockenbach, E.
AU - Wasserberg, V.
AU - Mohseni, H.
N1 - Funding Information: The authors wish to thank Deutsche Forschungsgemeinschaft for their support and GE Energy Management Services GmbH and Programma Electronic AB for letting us to use the IDA 200 Insulation Diagnostic System for the frequency domain measurements.
PY - 2006/6
Y1 - 2006/6
N2 - Dielectric spectroscopy in the wide frequency range of 1 mHz to 1 kHz has been used to study the polarization and conduction phenomena in insulating liquids. The dielectric spectroscopy of mineral oil and ester oil at different conditions, i.e. temperatures and electric fields, has been measured. It came out that at low frequencies, space charge polarization changes the permittivity of insulating liquid and at very low frequencies, the consideration of a RC parallel model for the dielectric behavior of insulating liquids is not adequate. The results indicate that the permittivity of insulating liquid increases with aging duration and therefore it can be used as a diagnosis parameter for insulating liquids. The calculation of the activation energy of the conduction process shows that consideration of single activation energy for compensation of temperature effect on dielectric loss for dielectric spectroscopy in the wide frequency range is not perfect.
AB - Dielectric spectroscopy in the wide frequency range of 1 mHz to 1 kHz has been used to study the polarization and conduction phenomena in insulating liquids. The dielectric spectroscopy of mineral oil and ester oil at different conditions, i.e. temperatures and electric fields, has been measured. It came out that at low frequencies, space charge polarization changes the permittivity of insulating liquid and at very low frequencies, the consideration of a RC parallel model for the dielectric behavior of insulating liquids is not adequate. The results indicate that the permittivity of insulating liquid increases with aging duration and therefore it can be used as a diagnosis parameter for insulating liquids. The calculation of the activation energy of the conduction process shows that consideration of single activation energy for compensation of temperature effect on dielectric loss for dielectric spectroscopy in the wide frequency range is not perfect.
KW - Conductivity
KW - Dielectric liquids
KW - Dielectric losses
KW - Dielectric polarization
KW - Power transformer insulation testing
KW - Space charge
UR - http://www.scopus.com/inward/record.url?scp=33746651157&partnerID=8YFLogxK
U2 - 10.1109/TDEI.2006.1657965
DO - 10.1109/TDEI.2006.1657965
M3 - Article
AN - SCOPUS:33746651157
VL - 13
SP - 532
EP - 538
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
SN - 1070-9878
IS - 3
M1 - 1657965
ER -