Advanced Technology in Transmission Line Protection

Electronics has plays great role in advancement of relay technology. Relays system of old generation were based on primary sensors and electrical circuit used for all type of electrical equipment protection. However, with advent of advance level of electronic hardware development, automation and communication system, all has been integrated in single device coupled with high level of intelligent algorithm lead to create next generation relay device. These relays devices are now become every day application for the protection of transmission line.   This paper describes some useful advance technology application used now days by practical utility level transmission system.