Software framework for protection relay testing

A software application is presented in this thesis that was designed to provide the framework for comprehensive automated testing of power system protection relays. This application was implemented using a model protection system that was designed to simulate actual relaying operations performed in the electric power system. The implemented application provided automated testing functionality that performed phase instantaneous over-current protection and phase distance protection testing. The modularity of the implemented software application provides the framework for the automated testing of a relay's complete protection abilities. Automated testing using this application was performed by driving the outputs of an Omicron CMC 256 relay test set to provide input signals to a GE Multilin D90-Plus Distance Protection System; though the framework is applicable to a wide variety of protective relays.