In this case from topic Study of Reliability And Evaluation Work System Relay Protection of 150 kV Transmission Line Koto Panjang - Pekanbaru. In this study just concern about problem of GI Koto Panjang, GI and GI Bangkinang Garuda Sakti.Transmission has protecion used on the 150 kV such as Distance Rele and safety reserves of the OCR and GFR. This topic point to analyze used of Distance relays…