TY - GEN
T1 - Investigation on transformer oil impedance during breakdown under AC voltage
AU - Abdi, S.
AU - Boubakeur, A.
AU - Harid, N.
AU - Haddad, A.
PY - 2009
Y1 - 2009
N2 - In this paper, we present an experimental study on the properties of mineral oils under ac breakdown conditions. Breakdown tests were carried out on mineral oil samples using a sphere-sphere electrode test cell for various gap lengths 1mm, 2.5mm and 5mm and at different voltage speed ramps: 0.5kV/s, 2kV/s and 3.5kV/s. The dynamic impedance of the mineral oil samples was determined from the instantaneous ratio of voltage and current. Such dynamic impedance can be used to explore the properties of the arc and its development within the oil. The results of this investigation show that the gap length and the voltage speed ramp have a significant influence on both the impedance magnitude and the decay time taken to reach the minimum impedance.
AB - In this paper, we present an experimental study on the properties of mineral oils under ac breakdown conditions. Breakdown tests were carried out on mineral oil samples using a sphere-sphere electrode test cell for various gap lengths 1mm, 2.5mm and 5mm and at different voltage speed ramps: 0.5kV/s, 2kV/s and 3.5kV/s. The dynamic impedance of the mineral oil samples was determined from the instantaneous ratio of voltage and current. Such dynamic impedance can be used to explore the properties of the arc and its development within the oil. The results of this investigation show that the gap length and the voltage speed ramp have a significant influence on both the impedance magnitude and the decay time taken to reach the minimum impedance.
UR - https://www.scopus.com/pages/publications/77949289031
U2 - 10.1109/CEIDP.2009.5377871
DO - 10.1109/CEIDP.2009.5377871
M3 - Conference contribution
AN - SCOPUS:77949289031
SN - 9781424445592
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 549
EP - 552
BT - CEIDP - 2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena
T2 - 2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Y2 - 18 October 2009 through 21 October 2009
ER -