مدلسازی ریاضی حالت مدار کوتاه یک ترانسفورماتور ولتاژ
Abstract
1- INTRODUCTION
2- DESCRIPTION OF MODEL
3- CONCLUSIONS
REFERENCES
Abstract
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.
INTRODUCTION
Computer technology progress has contributed greatly to the mathematical modeling development in all areas of science. The mathematical modeling allows to research a model of interest with minimizing the utilized resources. Modeling are used when a real experiment performing is impossible, dangerous or difficult and expensive [1]. The main task in modeling is the adoption of an adequate model which properties will be sufficiently close to the real simulated properties.
Now the problem of electromechanical compatibility of electric power system facilities is particularly acute. In [8-11], the authors touched on this important topic for the nominal operation mode of an induction motor. Of particular interest are emergency modes, such as short circuits.