MAINTENANCE OF CONTROL RELAYS

Magistrska naloga obravnava vzdrževanje kontrolnih relejev, ki so instalirani v elektrarni. Cilj naloge je ugotoviti trenutno stanje vgrajenih kontrolnih relejev v elektrarni in predlagati strategijo vzdrževanja relejev do konca obratovalne dobe elektrarne. V nalogi so predstavljeni različni modeli kontrolnih, časovnih in pomožnih relejev, domače in tuje vzdrževalne izkušnje in orodja za izvedbo vzdrževalnih aktivnosti. V rezultatih naloge so predlagane vrste vzdrževalnih aktivnosti in določene frekvence za zamenjavo kontrolnih relejev. V zaključku naloge je ugotovljeno, da je potrebno nadgraditi obstoječi preventivni progam za kontrolne releje in izvesti sistematično zamenjavo relejev z novimi.This master\u27s thesis discuss about maintenance of control relay which are installed in electrical power plant. The goal of thesis is to find out the current state of control relays in power plant and propose the strategy for maintenance of control relay to the end of the service life of the power plant. Thesis presents different model of control relay, time delay relay and auxiliary relay, domestic and foreign maintenance experiences and tools for control relays maintenance. At the end are results, which are suggesting the types of control relay maintenance activities and replacement frequency for control relays. Completion of thesis is to upgrade current preventive maintenance program for control relays and done systematically relays replacement with new one