Naslov
Voltage increase in hydrogenerator circuit due to failures and disturbances

Autori
Maljković, Zlatko ; Uglešić, Ivo ; Kuterovac, Ljiljana ; Vrkić, Ivica ; Vučak, Stipan

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

Izvornik
2000 Session CIGRE, Group 11: Rotating Machines / Herouard, Marc - Pariz : CIGRÉ, 2000, 11.202, 1-6

Skup
38 Session International conference on large high voltage electrical systems, CIGRE 2000

Mjesto i datum
Pariz, Francuska, 27.08.2000. - 01.09.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
hydrogenerator; voltage increase; overvoltage; single-phase fault

Sažetak
In the paper results of calculation of increased voltages in the generator main electrical circuit, occurring due to various disturbances are presented. Load rejection and the combined disturbance starting with a single-phase short circuit are analysed. Influence of saturation rate of the step-up transformer on voltage conditions at the synchronous generator after the load rejection is studied. Results of calculation of overvoltages originating from switching activities in the high-voltage circuit as well as from lightning strokes at the high-voltage transmission lines in front of the substation, and transferred into the generator main circuit, are also presented. Based on the results, potential generator hazards due to the voltage increase are estimated and necessity for installing protection devices is commented. The calculations have been carried out by computer programs EMTP-ATP and MicroTran.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA