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Identification of Faults in Medium Underground Cables System: Rwanda Case Study.

Samuel B, Jean CT

Electric power systems are gaining progress all over the world which results in increase of cables in operation and their total length. Underground cables have been widely implemented since long time ago due to reliability and environmental concerns. To enhance the reliability of a distribution system, proper identification of a faulted segment is required in order to reduce time interruption during fault current conditions. Fast and precise fault location play important roles in accelerating system restoration, reducing power outage time, and reduce financial losses, which significantly improve system reliability. This article is a report visit at Rwanda Energy Group, Section of Transmission and distribution, it describes a review on underground faults identification and location then fault identification and location estimation methods based on Centric System for medium distribution voltage in Underground cables being used in Rwanda was explored and then improvement suggestions were recommended at the end of this report.