Naslov
Differential Protection Issues for Combined Autotransformer - Phase Shifting Transformer

Autori
Gajić, Zoran ; Ivanković, Igor ; Filipović-Grčić, Božidar

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

Izvornik
Proceedings of 8th Imternational Conference on Developments in Power System Protection 2004 / G. Hensman - Amsterdam : IEE, CIGRE, EUREL, 2004, 364-367

ISBN
0 86341 385-4

Skup
Eight IEE International Conference on Developments in Power System protection

Mjesto i datum
Amsterdam, Nizozemska, 05.04.2004. - 08.04.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Autotransformer; Phase Shifting Transformer; Relay protection; Power transformer Differential protection

Sažetak
In Žerjavinec substation, Croatian Power Company going to install a special type of power transformer, which has two different modes of operation. The power transformer can be used either as conventional 400MVA, 400/220kV autotransformer with on-load tap-changer or as phase shifting transformer interconnecting 400kV & 220kV networks. When power transformer is de-energized, its operation mode can be changed. This change can be done even remotely, by the network control centre in order to maximize utilization of the electrical network infrastructure. Two different operating modes of the power transformer, as well as remote selection facility, drastically complicate selection of power transformer protection scheme. Especially, proper operation of the power transformer differential protection must be assured during all operating conditions. Necessary calculations for proper selection of power transformer differential relay and final solution for overall power transformer protection scheme will be presented in this paper.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA