Abstract: Establishing a distribution transformer model in the high-frequency range is of great significance for studying the propagation characteristics of fault transient traveling waves and medium-voltage, low-voltage power line communication signals. Based on the low frequency electromagnetic transient model, this paper proposes a high frequency model of transformers. The impedance analyzer is used to measure the ports impedance characteristics of the two types of transformers, and the parameters of the transformer model are calculated equivalently. The high frequency model of transformers is established, and the impedance characteristics of the model's ports are obtained by simulation. The comparison between the measured and simulated results shows the accuracy of the transformer model in the frequency domain; the experimental platform for studying the propagation characteristics of pulse signal in the transformer is built, and the effectiveness of the transformer model in the time domain is verified by comparing the measured and simulated voltage waveforms. The results show that the model proposed in this paper is suitable for different types of distribution transformers and it can be used to study the propagation characteristics of high frequency signals in distribution transformers between 100 Hz and 1 MHz.