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Photovoltaic (PV) systems have the intrinsic nature of distributed DC power generation that requires additional protection to reduce the fire and shock risks from various PV faults. Due to the current limited nature of PV generation, the short circuit current of a PV panel is typically 1.2 times of its rated current. This poses a unique overcurrent protection challenge, because traditional overcurrent...
This paper describes the design and operation of the microgrid installed for the US Department of Defense at Fort Sill, Oklahoma. The microgrid is composed of two natural gas generators, a battery energy storage inverter, renewables, and a static switch. Design considerations for this retrofit application with a high penetration of dynamic loads are given. The integration of the energy storage inverter...
A Microgrid is a cluster of distributed generation (DG), renewable sources, and local loads connected to the utility grid. A microgrid provides a solution to manage local generations and loads as a single grid-level entity. It has the potential to maximize overall system efficiency, power quality, and energy surety for critical loads. The Microgrid Exchange Group, an ad hoc group of expert and implementers...
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