@thesis{thesis,
		author={Arrafif  Galih Asa and Junaidi  Andi},
		title ={ANALISIS PENGUJIAN PENGGANTIAN OCR/GFR PADA BAY PLTMG SENAYAN DI PT PLN (PERSERO) GIS SENAYAN 150 KV},
		year={2021},
		url={http://156.67.221.169/3771/},
		abstract={It takes a protection system equipment to avoid or equipment from disturbances caused by many factors during the process of sending electrical energy from the generator to the consumer. One of the existing protection system equipment at the substation is the Over Current Relay (OCR) and Ground Fault Relay (GFR), in connection with the damage to the OCR and GFR bay of PLTMG Senayan GIS Senayan needs to be done. The method used in setting the relay on the 150 kV GIS Senayan is to find the transformer parameter data and relay setting data based on the mutual agreement guideline for the protection system management of PT PLN (Persero), from the calculation, the new OCR current setting is Iset = 0.75 A and TMS = 0.541 while the new GFR current Iset=0.125 A and TMS=0.79 then tested to determine whether the OCR/GFR complies with KEPDIR No. 0520-3.K/DIR/2014 with an error limit of 5%. Based on the research that has been carried out, the error calculation of the new OCR in the R phase 2xIset =1.11% ; 3xIset = 1.05% ; 5xIset = 1.21% , and phase S 2xIset= 1.11% ; 3xIset=1.02% ; 5xIset=1.08% , and phase T 2xIset= 1.01% ; 3xIset=1.00% ; 5xIset=1.12%. Then, the result of calculating the GFR error is just 2xIset= 0.44% ; 3xIset=0.46% ; 5xIset=0.59%. Furthermore, the error results with ETAP 12.6 simulation 2xIset= 0.293% ; 3xIset=0.431% ; 5xIset=0.00%.}
		}