Use of DFR's for Distribution Substation Monitoring

The traditional approach and justification for the use of Digital Fault Recorders (DFR's) for the monitoring of disturbances in the Electrical Grid, has typically been focused on Transmission Level Substations. This justification has mainly been the result of both the capital investment associated with DFR's, as well as the operational impact of Transmission Level assets on the Bulk Electric System (BES), and overall reliability of the Grid. This paper attempts to make the case, that the time has come, for the monitoring of Distribution Substations, from a financial, operational, and system analysis perspectives.