The Impact of TCSC on IDMT Relays in SLG Fault in Distribution Networks

Bougou¤a, Lazhar; Chaghi, Abdelaziz

Mediterranean Journal of Modeling and Simulation
Volume 5, Numéro 1, Pages 017-028
2016-03-30

The Impact Of Tcsc On Idmt Relays In Slg Fault In Distribution Networks

Authors : Bougou¤a Lazhar . Chaghi Abdelaziz .

Abstract

IDMT Directional Over-Current Relays protection is one of the basic protective relaying for distribution systems, for fault detection and clearing as soon as possible. Its function would generally be changed in presence of FACTS devices. In this paper a study to investigate the direct effect of varying reactance of the TCSC on single-line-to-ground (SLG) fault in compensated distribution systems. This paper, therefore presents the calculation of fault component, and directional over-current relay operating time characteristics for phase-to-earth fault involving the TCSC. The case study is compared between compensated and uncompensated system. The coordination of the relays is a nonlinear programming problem and it is solved by using MATLAB software.