Title :
Impact of high resistance faults on impedance protection perfomance
Author :
Matshidza, Rhulani ; Bartylak, Adam ; Zivanovic, Rastko
Author_Institution :
ESKOM, Transmission South Africa (Africa)
Abstract :
ESKOM has relied primarily on impedance-based measurement protection relays for the protection of EHV transmission lines. One of the main disadvantages of a distance relays is the limited fault resistance measurement capability. There are currently more than 20 relay types applied as transmission line protection on the ESKOM´s transmission network with the most common types of characteristic being mho and polygonal characteristics.
Keywords :
Distance protection; High resistance fault; algorithm; relays;
Conference_Titel :
Electricity Distribution, 2005. CIRED 2005. 18th International Conference and Exhibition on
Conference_Location :
Turin, Italy
