CERTS Microgrid Phase Two Test Report

The CERTS Microgrid Laboratory Test Bed project has undergone phase one testing at the Walnut test site by American Electric Power (AEP). Phase one testing demonstrated the stable operations of the CERTS control algorithms when transitioning between electrical utility connected and islanded operation, satisfying difficult loads such as motor starts while in islanded operation, and detecting faults within the microgrid and utility using a sequence component protection scheme. Each test from this phase one resulted satisfactory which prompted a new phase of testing to be performed. The next phase of testing deemed phase two testing included a continuation test for power quality, generator and load diversity, inverter fault current contribution, and protection tests moving the measurements closer to the gen-sets. Test descriptions, set-up, and results from the phase two testing are reported in this document.