NM National Laboratories & NM SMART Grid Center–Related ResearchDate: Friday, November 22, 2019
Time: 12:00 - 1:00PM MST
Presenters: Arthur Barnes, Los Alamos National Laboratory (LANL), Jay Johnson, Sandia National Laboratories (SNL)
LANL presentation: Protection of inverter-interfaced microgrids is a challenging problem because many of the assumptions made in traditional protection breakdown. The difficulties in protecting such microgrids include: 1) lack of fault current from inverter-interfaced generation, 2) varying fault current between grid-connected and islanded modes, 3) potential for normally-meshed operation, and 4) unbalanced operation due to single-phase loads. It is worth noting that not all microgrid designs will include all these challenges. For example, microgrids could choose to omit meshed operation. Here, Dr. Barnes will present on potential protection solutions for microgrids with a focus on adapting admittance protection, commonly used for line protection in networked transmission systems.
Arthur Barnes is a power systems engineer in the Information Systems & Modeling group at Los Alamos National Laboratory. His current interests include geomagnetically induced currents (GIC) in electrical transmission networks, analysis of protective devices, and design of microgrid systems. He holds a Ph.D, M.S and B.S. in electrical engineering from the Universities of Arkansas, Florida, and Colorado respectively.
Jay Johnson is a Principal Member of Technical Staff at Sandia National Laboratories. Jay leads several multidisciplinary research projects focused on power systems control, electric vehicle charging, DER cybersecurity, and renewable energy integration. He has seven patents and has authored over 100 technical publications.