Abstract: An electrical substation test bed with DLT for multipurpose power system applications. The test bed has a real-time simulator with power meters and protective relays in-the-loop. The test bed is used for DLT applications providing a platform for performing use case scenarios with focus on electrical fault detection, power quality monitoring, DER use cases, and cyber-event scenarios. The grid test bed has a real-time simulator with power meters and protective relays in-the-loop and represents an electrical substation grid with inside and outside IEDs and DERs. Use case scenarios focus on using power meters and protective relays with GOOSE messages, as well as an external timing source for synchronizing the power system applications. This test bed presents the same time stamps for the events from the protective relay and the CGG system, which proved the synchronization of the data managed with the algorithms.

Abstract: A phase to ground fault apparent (PGFA) admittance system and method with phase/ground boundaries for detecting electrical power line faults. The PGFA admittance method with phase/ground boundaries is based on measuring the A, B and C phase admittance magnitudes for faulted and non-faulted phases, resulting in greater than zero and near zero, respectively, and using the phase/ground boundaries to distinguish between the LL and LLG electrical faults. The PGFA admittance method with phase/ground boundaries is based on a pre-setting of values by using the zero, positive and negative sequences of power line sections, to determine phase and ground boundaries. The PGFA admittance algorithm with phase/ground boundaries was built with MATLAB/Simulink software and tested and evaluated with a confusion matrix. The measured and predicted values matched in more than 90% of the tests, and the PGFA admittance method presented an accuracy of 94.3% and a precision of 100%.

Abstract: A phase to ground fault apparent (PGFA) admittance system and method with phase/ground boundaries for detecting electrical power line faults. The PGFA admittance method with phase/ground boundaries is based on measuring the A, B and C phase admittance magnitudes for faulted and non-faulted phases, resulting in greater than zero and near zero, respectively, and using the phase/ground boundaries to distinguish between the LL and LLG electrical faults. The PGFA admittance method with phase/ground boundaries is based on a pre-setting of values by using the zero, positive and negative sequences of power line sections, to determine phase and ground boundaries. The PGFA admittance algorithm with phase/ground boundaries was built with MATLAB/Simulink software and tested and evaluated with a confusion matrix. The measured and predicted values matched in more than 90% of the tests, and the PGFA admittance method presented an accuracy of 94.3% and a precision of 100%.