@thesis{thesis,
		author={Diantari  Retno Aita and Hardian Noor  Muhammad},
		title ={Analisis Perhitungan Koordinasi Rele Arus Lebih Dan Rele Gangguan Tanah Pada Penyulang Bambu GIS 150/20 kV Kebon Jeruk},
		year={2021},
		url={http://156.67.221.169/3406/},
		abstract={Bambu Feeder is one of the longest distribution channels on the Gas Insulated Substation (GIS) Kebon Jeruk, the operation of a Potential Transformator at a substation is never separated from disturbances, both short circuit inter-phase and phase to ground, which occurs in bambu feeder and this disturbance can harm the consumer. Therefore, coordination is required safety equipment on the outgoing and incoming transformers, so that interference can be exploited be as small as possible. The purpose of this study is to determine the coordination of overcurrent relay and ground fault relay in GIS 150 / 20 kV 60MVA Kebon Jeruk bambu feeder. The research was conducted at PT. PLN (Persero) GI Kebon Jeruk, West Jakarta. This research method uses secondary data with quantitative data analysis techniques. The technique of collecting data using the method of observation and interviews by making observations and question and answer while making observations. The largest 3-phase fault current value at a distance of 0% is 13266.31 A and the smallest at a distance of 100% is 3577.09 A. The largest 1-phase fault current value to ground is at a distance of 0% of 862.55 A and the smallest is at a distance of 100% of 720.08 A. The incoming side OCR had TMS = 0.202 and the outgoing 20 kV had a TMS value of 0.222, the incoming GFR had a TMS value of 0.237, and the outgoing 20 kV had a TMS 0.109. The outgoing relay working time is faster than the incoming relay working time with a time difference (grading time) of 0.4 seconds}
		}