Distance protection application test using a real time digital transient network analyser

Real-time power system simulator testing has proven to be an invaluable means to evaluate relay performance under realistic conditions. This paper exposes the configuration and the performance of a real time digital transient network analyser (DTNA) in closed loop testing of a distance protection system in a series compensated network. A power system simulator for relay testing should be flexible in configuration and parameter adjustment and it should provide for a rapid execution of test cases. It must not only function in real time, but in a closed-loop mode with relays tripping circuit breakers within the simulator. This paper describes the ARENE DTNA.