Krisha Grace Vallejos, Elijah Fernandez, Allyssa Larkin, David Cabrera, Omar Reyes Diaz, Austin Valle, Alan Vu, Tony Yim, Omar Aljumaa, Andrew Sierra, Miguel Alcala, Nick Garcia, Tom Bailey, Steven Yau, Ha Thu Le
In this study, a load balancing scheme and a fault interruption system are developed and implemented to improve an autonomous microgrid design. These features are needed to make the microgrid design better where supply-demand is balanced to ensure satisfactory voltages and fault situations are properly handled for the microgrid safety. The enhanced microgrid is implemented using MATLAB Simulink. Testing results have shown that the microgrid control system works properly and can handle various operational situations. The load balancing scheme is effective in matching power supply with load demand using different power sources (solar PV, battery, diesel generator). Voltage levels of both residential and commercial loads are maintained within ±5% tolerance of their respective nominal values. The fault interruption system operates properly and is effective in dealing with different faulty conditions. It successfully clears non-permanent faults and isolates a permanent fault. Overall, the original microgrid has been improved to be more autonomous as it can deal with more diverse operational conditions. The study outcomes contribute to expansion of smart microgrids by developing theoretical advanced features for real-world implementation of autonomous intelligent microgrids, which, in turn, make larger grids more dependable.
Battery, control system, fault interruption, inverter, microgrid, power balancing, relay, solar PV
Cite this paper
Krisha Grace Vallejos, Elijah Fernandez, Allyssa Larkin, David Cabrera, Omar Reyes Diaz, Austin Valle, Alan Vu, Tony Yim, Omar Aljumaa, Andrew Sierra, Miguel Alcala, Nick Garcia, Tom Bailey, Steven Yau, Ha Thu Le. (2022) Enhancing Power Balancing and Fault Interruption in an Autonomous Smart Microgrid Design. International Journal of Power Systems, 7, 42-67