THE RELAY PROTECTION AND VOLTAGE REGULATION OF POWER TRANSFORMER IN TR 110/35 kV KOMOLAC

Tema koja je prezentirana u ovom završnome radu je „Sustav zaštite i automatske regulacije napona energetskog transformatora“. Kroz rad je prikazan način primjene ključnih vrsta relejne zaštite, a to su diferencijalna, nadstrujna i termička. Referirajući se na transformatore smještene u TS 110/35 kV Komolac izvršeni su proračuni podešenja funkcija relejne zaštite integriranih u numeričkim uređajima zaštite koji se koriste za štićenje transformatora. Riječ je o uređaju 7UT63 (Siemens) odnosno o uređaju REG-D EBERLE (Tapcon). U radu su predstavljeni navedeni uređaji te je sažeto objašnjen princip njihova djelovanja. Pri samim proračunima su uzeti svi kriteriji s ciljem postizanja što veće kvalitete djelovanja relejne zaštite, dok su dobiveni rezultati primijenjeni za kvalitetno podešenje numeričkih uređaja zaštite.The topic that was presented in this final paper is „The relay protection and automatic voltage regulation of power transformer in TS 110/35 kV Komolac“. Through the work, the application method of crucial sorts of relay protection is going to be shown, and that are differential protection, overcurrent protection and thermal protection. By reffering to transformers that are placed in TS 110/35 kV Komolac, the calculations for adjustment of relay protection functions that are integrated in numeric devices for protection which are used for protection of transformers are made. That devices are 7UT63(Siemens) and REG-D EBERLE (Tapcon). Listed devices are presented in work and the type of their work is summarized. By doing calculations, all criteria is used with target of making the highest quality for work of relay protection. All obtained results are used for quality adjustment of numeric devices for protection