Published online by Cambridge University Press: 22 February 2011
The study presented in this paper is a first step of an EMC (Electromagnetic Compatibility) analysisof the behaviour of a railway power substation at high frequency. Before on site intensive experimentation, theapproach is performed with a reduced scale model. The mock-up of the substation is powered by a 220 Vthree-phase voltage supplied by a 15 kV A power transformer, a rectifier and loads. The study consists in designing an equivalent electrical circuit of power transformer in high frequency, available over a large panelof loads. The model of power transformer was deduced from measurements in frequency domain within the range 40 Hz to 30 MHz.