Speaker: Will Knapek, OMICRON electronics Corp. USA
As protection relays have evolved from electro-mechanical (EM) relays to microprocessor based relays why have we continued to test relays like we did a generation ago? This paper will explore what we have historically done to test relays and where we need to go in the future. As the technology for protecting the power systems as evolved, the process of testing the protection must also evolve We explore the shift in traditional relay testing to a more complete system test.
Test the logic of the relay, not the capability of the microprocessor to perform math. As the technology for protecting the power systems as evolved, the process of testing the protection must also evolve. The protection devices that are in service are moving away from electromechanical devices to intelligent electronic devices the methods of testing need to be updated. No longer is it applicable to test the capability of the modern relay to perform the mathematics of calculating the proper timing of an overcurrent element or the proper impedance characteristic in a distance element. This paper will explore the testing practice of system testing and learn how to apply them.