A evolução nos procedimentos para os ensaios de desempenho de relés de proteção

This paper describes the evolution of procedures to protection relays performance testing. In the early days, the measurement and calibration of relays were made by analog devices and instruments that basically provided the steady-state tests. In the 70´s came the electronic test equipment. With the passage of time have evolved, providing a full range of dynamic tests. With technological advances, reaching the age of digital relays, there was also a major evolution in test equipment, mainly by the need to simulate transient conditions. This type of equipment, plus the hardware is provided with software. Are presented results of 500 kV transmission line protection system analysis, using a real time digital simulator.