MODERN ADVANCES IN TESTING MULTIFUNCTION NUMERICAL TRANSFORMER PROTECTION RELAYS

摘要

This article demonstrates different techniques to test multifunction numerical transformer protection relays, so that these techniques can easily be incorporated into automated test software. The Common Format for Transient Data Exchange (COMTRADE) for power systems is a file format for storing oscillography and status data related to transient power system disturbances. COMTRADE is an excellent tool for testing relays because it can replay actual operating conditions or simulate a very complex event such as transformer energization when there is remnant flux on the core of a winding.