Mathematical Modeling of the Short Circuit Mode of a Voltage Transformer

When a transformer works under the operating mode an emergency short circuit may occur. This is a dangerous emergency mode, in which the transformer currents are many times higher than their rated values. Such currents may lead to isolation overheating, reliability decreasing or even to transformer failing. In order to prevent damage during the critical mode and increase the transformer reliability by using a protector, it is necessary to determine the short circuit current value. The article considers the problem of optimal accurate design by the method of mathematical transformer modeling by determination of short circuit current value in emergency mode.