| The protection system plays an important role in the power system to detect the fault, isolate the faulted zone and restore the power supply to the healthy part. Terrestrial power systems (TPS) as well as shipboard power system (SPS) test cases are developed to conduct hardware in the loop (HIL) and the software in the loop (SIL) test using commercial relays and a Real Time Digital Simulator (RTDS). The comparison of the HIL and SIL simulation results were used to validate the develop software overcurrent relay model.;This research work is further extended to implement multiple relay operation and coordination tests on the SPS and TPS using multiple commercial hardware overcurrent relays as well as multiple software relay models. In addition to modeling overcurrent relay, a differential relay was also modeled using LabVIEW. The relay model was tested for different types of fault conditions. |
