TY - GEN
T1 - Modeling the effect of ionic dissociation on charge transport in transformer oil
AU - O'Sullivan, Francis
AU - Lee, Se Hee
AU - Zahn, Markus
AU - Pettersson, Leif
AU - Liu, Rongsheng
AU - Hjortstam, Olof
AU - Auletta, Tommaso
AU - Gafvert, Uno
PY - 2006
Y1 - 2006
N2 - Transformer oil is one of the most important and widely used of all dielectric liquids. Significant research into the insulating properties of transformer oil has been carried out. Much of this work has focused on the development of streamers, and how they can result in the electrical breakdown of the oil. Due to the complex nature of transformer oil no universally accepted model describing streamer initiation and propagation has emerged. In this paper, a model is developed which explores the role played by electric field dependent ionic dissociation in the initiation and propagation of streamers in transformer oil. This model couples the electrodynamics of charge transport to thermal enhancement in transformer oil. Using the COMSOL Multiphysics software application and the finite element method, the model is solved to show that ionic dissociation alone will not lead to a high enough temperature rise to initiate a streamer in transformer oil.
AB - Transformer oil is one of the most important and widely used of all dielectric liquids. Significant research into the insulating properties of transformer oil has been carried out. Much of this work has focused on the development of streamers, and how they can result in the electrical breakdown of the oil. Due to the complex nature of transformer oil no universally accepted model describing streamer initiation and propagation has emerged. In this paper, a model is developed which explores the role played by electric field dependent ionic dissociation in the initiation and propagation of streamers in transformer oil. This model couples the electrodynamics of charge transport to thermal enhancement in transformer oil. Using the COMSOL Multiphysics software application and the finite element method, the model is solved to show that ionic dissociation alone will not lead to a high enough temperature rise to initiate a streamer in transformer oil.
UR - http://www.scopus.com/inward/record.url?scp=50549104257&partnerID=8YFLogxK
U2 - 10.1109/CEIDP.2006.312042
DO - 10.1109/CEIDP.2006.312042
M3 - Conference contribution
AN - SCOPUS:50549104257
SN - 1424405475
SN - 9781424405473
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 756
EP - 759
BT - 2006 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
T2 - 2006 Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Y2 - 15 October 2006 through 18 October 2006
ER -