Abstract

Microgrid can provide higher reliability, resiliency, sustainability, energy security and surety. Even though there are greater benefits, maintaining stability of microgrid is a major challenge especially with high penetration of renewables into microgrid. The existing approaches to address the problem of stability is to add large energy storage and increase generation capacity. In this paper, energy storage reduction and fuel minimization in a microgrid using Virtual Droop Control (VDC) has been proposed to deal with the problem of stability. The size selection of energy storage system for microgrid to ensure proper operation during microgrid transition has been discussed in this paper. The simulation results has been presented for 24 hours load, wind and solar PV radiation profile for the studied Fort Sill microgrid system using VDC controls. The energy profile for energy storage systems and natural gas generators and fuel consumption of natural gas generators have been presented for standard droop control method and compared with VDC controls.

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