Simulating protection systems: effects on voltage dips and reliability, a case study

This paper is a summary of a reliability study for a French 90 kV power subtransmission system for which KEMA applied an advanced reliability model. The study evaluates the expected number of voltage dips and the reliability of the power system for different configurations of the protection scheme. Its purposes are to gain knowledge to increase performance of the system and its protection and to improve supply quality towards consumers.