Calculation and Analysis of Short Circuit Strength of Three-Winding Transformer

Abstract

The transformer is the most important in the entire power system and is also one of the most expensive devices. The operating condition of the transformer affects itself and at the same time concerns the stability and safety of the whole power system. This paper deals with leakage field, short-circuit electromotive force, and other issues in the transformer. The basic data of the SFSZ-40000/110 power transformer is calculated as an example, and then the leakage field of winding and short-circuit electromotive force is calculated and analyzed.