A Model for the Initiation and Propagation of Positive Streamers in Transformer Oil

  title={A Model for the Initiation and Propagation of Positive Streamers in Transformer Oil},
  author={Francis M. O'Sullivan and J George Hwang and Markus Zahn and Olof Hjortstam and L. A. A. Pettersson and Rongsheng Liu and Patrick Biller},
  journal={Conference Record of the 2008 IEEE International Symposium on Electrical Insulation},
An electro-thermal model is presented of streamer initiation and transport that leads to electrical breakdown. The dominant charge initiation mechanism treated is electric field dependent molecular ionization. Analysis using COMSOL Multiphysics shows that molecular ionization results in fast electrons that cause a propagating electric field wave that is the dominant mechanism in the initiation of electric breakdown streamers. To model these dynamics a complete three carrier (positive ions… CONTINUE READING
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