Failure Analysis Using Different Transformer Models in EMTP-ATP

摘要

Various transformer models can be used to analyze fault conditions occurring in the power system. In this paper, several transformer models and their influence on the fault current course at different types of short circuits are investigated. Therefore, the 3-ph ideal transformer, the 3-ph saturable transformer (with and without saturation consideration), and the label-entered transformer (BCTRAN) were selected to compare the short-circuit current results. Faults such as 1-ph short-circuit, 2-ph metal short-circuit, 2-ph ground short-circuit and 3-ph short-circuit were considered. The results were compared with the methodology given in standard STN EN 60909-0 (33 3020).