Optimal sizing and techno-economic analysis of grid-connected nanogrid for tropical climates of the savannah

• Main Authors: Dahiru, A. T., Tan, C. W.
• Format: Article
• Language: English
• Published: Elsevier Ltd. 2020
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/86452/1/TanCheeWei2020_OptimalSizingandTechnoEconomicAnalysis.pdf; http://eprints.utm.my/id/eprint/86452/; https://dx.doi.org/10.1016/j.scs.2019.101824
• Institution: Universiti Teknologi Malaysia

Reliability and costs are mainly considered in performance analysis of renewable energy-based distributed grids. Hybrid Optimization of Multiple Energy Renewables was used in techno-economic analysis of renewable energy systems involving photovoltaics, wind, diesel and storage in tropical regions of Amazon, Central Asia and Mediterranean. In a study for a Guinea Savannah region, 70% of renewable energy fraction was achieved. However, levelized cost of energy of 0.689 $/kWh was higher than tariff rate of 0.6 $/kWh. This paper considers Hybrid Optimization of Multiple Energy Renewables to achieve lower levelized cost of energy and net present costs of a nanogrid for increased reliability and low per capita energy consumption of 150 kWh in a Sudan Savannah region of Nigeria. The proposed grid connected nanogrid aims to serve daily residential demand of 355 kWh. A range of 0.0110 $/kWh to 0.0095 $/kWh and $366,210 to $288,680 as negative values of levelized cost of energy and net present cost respectively were realized, implying potentials for a large grid export. The renewable energy fraction of up to 98% was also achieved in addition to low greenhouse gas emission of 2,328 tons/year. The results may further be consolidated with strategies for power dispatch and load scheduling.