Naslov
Characteristic features of stator winding bars of the new hydro-generator of power 160 MVA installed in Zakučac HP

Autori
Študir, Josip ; Polak, Josip ; Milojković, Zoran

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

Izvornik
CIGRE A1 Colloquium, Sydney 20th - 25th September, 2009. / - Sydney, 2009, 1-5

Skup
CIGRE A1 Colloquium, Sydney 20th - 25th September, 2009

Mjesto i datum
Sydney, Australija, 20.09.2009. - 25.09.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
bar; high voltage; hydro generator; insulation system; stator winding; voltage endurance

Sažetak
A new insulation system made in VPI technology comprising inside protection (screens), up to the nominal voltage of 16 kV (developed on the base of the existing system having the nominal voltage of 13.8 kV), has been applied to new generators of the power of 160 MVA, in Zakučac HPP (foreseen by the refurbishment programme). This paper gives a brief description of construction of the bar insulation system in the function of a basic element of the stator winding and results of its type testing and main insulation voltage endurance tests achieved by application accelerated aging method. Other tests and inspections of the main insulation are presented as well (geometry of the longitudinal bar cross section and characteristics of the shell removed from bars after application of accelerated aging method). Achieved results of all testing and inspections of VPI insulation system 16 kV as well as operation experiences of application of the system VPI 13.8 kV by the time being show that the recently developed system is going to enable reliable operation with a long life time of the equipment.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA