Coil Shorting Simulation in the Windings of a Triple-Phase Three-Winding Transformer

Aleksandr Novozhilov, E. N. Kolesnikov, Т. А. Новожилов

2020

Closed access Metadata (CSL-JSON)
DOI 10.3103/s1068371220120111
Data confidence 70 medium
How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

Abstract A mathematical model is proposed that allows simulating the currents in the transformer windings during turn shorting when the supply voltage is unbalanced in any load mode. The results of simulation of currents in windings and shorted coils depending on their number in the primary winding in the idle and load modes are presented. Verification of the adequacy of the model by comparing the results of calculation and experiment for the TT-6 transformer showed that the error in simulated currents when shorting a small number of turns does not exceed 10% and meets the requirements of relay protection.