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The dynamic frequency stability issues in microgrids with large penetration of low inertia and intermittent photovoltaic (PV) systems can be improved by using virtual inertia (VI). A VI is the combination of energy storage system, power electronics converter and a proper control algorithm. This paper presents design and experimental verification of the VI in a PV-diesel generator based remote microgrid...
Microgrids are generally comprised of a number of Distributed Energy Resources (DERs) which may be renewable or non-renewable sources. Due to the intermittent nature of wind and solar resources, batteries are commonly used to ensure power quality and reliability. A central Energy Management System (EMS) is necessary to coordinate operation for the most economical utilization of all microgrid resources...
Using the example of a two-layer energy management system for remote microgrids, a novel scheduling algorithm is proposed that considers the battery lifetime and is expected to reduce the operational cost of the microgrid. This method combines the objectives of minimizing fuel consumption and battery degradation costs into a single weighted goal.
Remote microgrids are a viable option for electrification where the main grid expansion is either impossible or not economical. Typically, remote microgrid consists of diesel generator as a primary source of energy which has a high fuel cost. Renewable energy sources can be used to reduce the fuel consumption with proper coordination and scheduling methods. Storage devices, usually battery, used in...
Diesel generators are the most common source of electricity for remote microgrids. Typically, remote microgrids have load profiles with large peak to average ratios which results in frequent operation of the generators at low loading. Generators are most efficient near rated load and operation at low loading results in poor fuel utilization and increased cost. Photovoltaics (PV) can be added to microgrids...
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