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Optimization, Implementation and Utilization of Home-based Solar- powered Microgrid

Kio, Onisodumeya Onisobuana

Abstract

This study focuses on the optimization, implementation, and utilization of a home-based solar- powered microgrid to enhance energy reliability and efficiency in remote areas. The research evaluates different energy storage systems (ESS) lead-acid (PbA), lithium-ion (Li-ion), hybrid-ion batteries, and ultra-capacitors to determine their feasibility based on operational cost, lifecycle, and fuel efficiency. A Schiffer weighted Ah throughput model was incorporated into the energy management system (EMS) to account for real-time battery degradation, and various charging strategies (weekly, bi-weekly, monthly, and auto-threshold cycling) were analyzed to assess their impact on system performance. To achieve these objectives, the study employed a deterministic optimization model to minimize total operational costs while maximizing battery lifespan and generator fuel efficiency. Simulations were conducted using data from existing microgrid systems, with key parameters including battery wear cost, throughput, and generator fuel consumption. Different battery cycling strategies were tested to identify the most effective method for reducing energy losses and extending battery life. The results show that frequent full charging mitigates battery degradation, with auto-threshold cycling being the most cost-effective strategy. This optimization reduced the yearly operational cost of a 142 kWh PbA battery-based microgrid by 0.62% ($826) and decreased generator fuel consumption by 82 gallons annually. Among the storage technologies analyzed, Li-ion batteries were found to be 2.55% more cost-effective and 1.5% more fuel-efficient than hybrid-ion alternatives, making them the preferred choice for sustainable microgrid operations.

Keywords

Optimizationimplementationutilizationsolar powered microgrdenergy storage

References

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