Simulation of Transformer With Aging Insulation and Incipient Faults

Abstract—The development of the transformer insulation failure undergoes three stages: insulation aging, incipient faults and a short circuit. This paper presents a complete scheme to simulate single-phase transformers with insulation deterioration and arcing phenomena i.e. in the first two stages. The approach incorporates Transmission Line Methods (TLM), Jiles-Atherton Hysteretic Model, Composite Cassie-Mayr Arcing Model and Dielectric Model. A small 25kVA 11kV/220V power transformer with aging and incipient faults is taken as example for simulation.

• Type: Conference
• Year: 2007
• Where: WCE
• Authors: X. Wang, Mark Sumner, D. W. P. Thomas
• Keywords: Cassie-Mayr Arcing Model, Incipient Faults, Transformer Insulation Failure, WCE 2007, WCE 2008