Analysis of Surge Voltage Distribution in a Model Transformer for Different Types of Surges with Turn Resolution and its Validation

The paper presents an investigation on transient voltage distribution in transformers, which is of significance to all power system engineers. A better knowledge of this is possible with today´s digital computers, for which a good modeling of the transformer is necessary. Using this information, the design engineers can develop a more reliable and possibly economic insulation structure which is the main issue affecting the cost of the transformer. Therefore, in this paper an attempt has been made to study the impulse response on a small model transformer for different types of pulses of varying frequency. The main objective of this paper is to show the significance of frequency and rise times for different types of pulses and high frequency pulse-VFTO on transient voltage distribution in the transformer