ANALISIS SISTEM PENGAMAN BACKUP UNTUK MENGAMANKAN BUSBAR 150 Kv TERHADAP GANGGUAN DI GIS PECATU

Abstract

High power needs in badung area, especially Pecatu and Nusa Dua resulted in the
need for GIS development to increase power supply. GIS Pecatu uses a double busbar with
OCR as its Backup safety, if one of the busbars is disrupted and there is no protection rele that
secures the busbar, it will result in continuous power flow is disrupted.
In this study, an analysis of the rele busbar setting and the appropriate protection
setting as a reference protection system in GIS Pecatu. The results of the calculation of current
setting obtained the working current value (Iset) OCR of 1339 A and (Iset) GFR 223 A and
delay time 0.53 seconds, actual working time rele 0.35 Standard Inverse, and the value of short
circuit interference current calculation from PLN 11.58 kA and based on simulation results
obtained 11.46 kA with a percentage of errors of 0.12%.