Naslov
Generic approach to calculation of short circuit currents in power transformers

Autori
Capuder, Kosjenka ; Plišić, Goran ; Štih, Željko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 3rd Internatinal Colloquium Transformer Research and Asset Management / Štih, Željko ; Mikulecky, Antun ; Sitar, Ivan ; Janić, Žarko - Split : CIGRÉ, 2014, 1-11

Skup
3rd Internatinal Colloquium Transformer Research and Asset Management

Mjesto i datum
Cavtat, Hrvatska, 15.10.2014. - 17.10.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
power transformer; symmetrical components; short circuit; inductance matrix;

Sažetak
Power transformer in service is exposed to various voltage and current stresses. The ability to withstand short circuit is an essential requirement for power transformers. There are different types of short circuit: single - phase to earth, double - phase with or without simultaneous earth fault and three - phase short circuit. These various short circuit conditions result in different stress conditions for the windings. Mesh analysis and symmetrical components are the two methods most commonly used for determining the magnitude of short circuit currents. In this paper, both methods will be presented with results compared on a real-case transformer. Also, a generic scheme using the symmetrical components approach is designed in order to standardize the short-circuit currents calculation for all power transformer types and to reduce the time required for obtaining results.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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