Optimal and Economic Evaluation of a Stand-alone Microgrid for Electricity and Water Supply for Namibia’s Rural Village
American Journal of Energy Engineering
Volume 7, Issue 3, September 2019, Pages: 64-73
Received: Oct. 16, 2019; Accepted: Nov. 4, 2019; Published: Nov. 11, 2019
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Tom Wanjekeche, Department of Electrical and Computer Engineering, University of Namibia, Ongwediva, Namibia
Theophilus Ananias, Department of Electrical and Computer Engineering, University of Namibia, Ongwediva, Namibia
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Stand-alone microgrid hold a primary solution for electricity and water supply in remote areas access to National grid is not possible. This paper presents a detailed optimal sizing and economic evaluations of a stand-alone microgrid for a remote village (Amarika) in Namibia. Several renewable energy sources such as wind turbines and photovoltaic arrays were considered with a battery backup storage system and a reverse osmosis desalination plant for water supply. Modelling of the microgrid was done based on the meteorological data, the daily water and energy demand of the village. Particle swarm optimization was employed for the system techno- economic optimization: to determine a suitable microgrid configuration that can be established at minimum cost. Sensitivity analysis of the system was performed to examine the effect of variation of LPSP on LCOE. The results demonstrate that the optimized microgrid configuration and the optimization algorithm are effective and can be adopted in supplying power and water to the village. The levelized cost of electricity proves the economic feasibility of the microgrid. The levelized cost of electricity falls within a 90% standard deviation (σ=0.065) of the mean. This proved to be economically feasible with a 96.5% reliability of power supply.
Stand-Alone Microgrid, Water Desalination, Optimization, Economic Evaluation
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Tom Wanjekeche, Theophilus Ananias, Optimal and Economic Evaluation of a Stand-alone Microgrid for Electricity and Water Supply for Namibia’s Rural Village, American Journal of Energy Engineering. Vol. 7, No. 3, 2019, pp. 64-73. doi: 10.11648/j.ajee.20190703.12
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A. H. Hubble and T. S. Ustun, "Feasibility of Microgrid Optimization and Grid Extension," in 2016 IEEE Region 10 Conference (TENCON), Singapore, 2016.
A. Yahiaoui, K. Benmansour and M. Tadjine, "A new sizing algorithm of renewable hybrid systems PV-Diesel Generator-Battery: application to the case of Djanet city of Algeria," 8th International Conference of Modelling, Identification and Control (ICMIC-2016), 2016.
G. J. Falco and R. Webb, "Water Microgrids: The Future of Water Infrastructure Resilience," Procedia Engineering, vol. 1118, p. 50–57, 2015.
G. Sandeep and V. S. Vakula, "Optimal Combination and Sizing of a Standalone Hybrid Power System Using HOMER," International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT), 2016.
Y. Wang, H. Jiang and P. Xing, "Improved PSO-Based Energy Management of Stand-Alone Micro-Grid Under Two-time Scale," International Conference on Mechatronics and Automation, 2016.
S. Bahramirad and H. Daneshi, "Optimal Sizing of Smart Grid Storage Management System in a Microgrid," Innovative Smart Grid Technologies (ISGT), 2012 IEEE PES, 2012.
A. Karthikeyan, K. Manikandan and P. Somasundaram, "Economic dispatch of microgrid with smart energy storage systems using Particle Swarm Optimization," Computation of Power, Energy Information and Commuincation (ICCPEIC), 2016.
E. Ghiani, C. Vertuccio and F. Pilo, "Optimal sizing and management of a smart Microgrid for prevailing self-consumption," 2015 IEEE Eindhoven PowerTech, 2015.
F. Huneke, J. Henkel, J. Gonzalez, B. Alberto and G. Erdmann, "Optimisation of hybrid off-grid energy systems by linear programming," Energy, Sustainability and Society, pp. 2-7, 2012.
O. Erdinc and M. Uzunoglu, "A new perspective in optimum sizing of hybrid renewable energy systems: Consideration of component performance degradation issue," International Journal of Hydrogen Energy, vol. 37, pp. 10479-10488, 2012.
C.-x. Dou, X.-b. Jia, Z.-q. Bo, F. Zhao and D.-l. Liu, "Optimal management of MicroGrid based on a modified particle swarm optimization algorithm," Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific, 2011.
R. F. Islam, K. A. Mamun and M. T. O. Amanullah, Smart Energy Grid Design for Island Contries: Challenges and Opportunities, Switzerland: Springer Nature, 2017.
S. Mandal, K. Mandal and B. Tudu, "Optimal design of a hybrid power system using a new improved particle swarm optimization technique," in Michael Faraday IET International Summit: MFIIS - 2015, Kolkata, 2015.
G. M. Master, Renewable and efficient electric power systems, New Jersey: John Wiley & Sons, Inc., 2004.
I. Maruta, "Demand side management of a stand alone microgrid for Amarika village," Ongwediva, 2017.
G. J. Prinsloo, T. R. Dobson and A. Brent, "Scoping exercise to determine load profile archetype reference shapes for solar co-generation models in isolated off-grid rural African villages," Journal of Energy in Southern Africa 28, vol. 27, 2016.
C.-J. Lee, Y.-S. Chen and G.-B. Wang, "A dynamic simulation model of reverse osmosis desalination systems," in The 5th International Symposium on Design, Operation and Control of Chemical Processes, Singapore, 2010.
A. M. Gilau and M. J. Small, "Designing Cost-Effective Sea Water Reverse Osmosis System under Optimal Energy Options for Developing Countries," Proceedings of the International Conference on Renewable Energy for Developing Countries, 2006.
L. Hepeng, Z. Chuanzhi and Z. Peng, "A genetic algorithm-based hybrid optimization approach for microgrid energy management," Cyber Technology in Automation, Control, and Intelligent Systems (CYBER), 2015.
M. Sharafi and T. Y. El Mekkawy, "Stochastic optimization of hybrid renewable energy systems," in ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, Massachusetts, 2015.
Y. Sabri, H. S. Zein and E. Yusuf, "Optimal cost valuation for renewable power plants using PSO in rural area," International Journal on Electrical Engineering and Informatics, vol. 7, no. 4, pp. 613-628, 2015.
B. O. Bilal, V. Sambou, P. A. Ndiaye, C. Kébé and M. Ndongo, "Multi-objective design of PV-wind-batteries hybrid systems by minimizing the annualized cost system and the loss of power supply probability (LPSP)," Industrial Technology (ICIT), 2013.
J. Kartite and M. Cherkaoui, "Optimal sizing of hybrid renewable PV/Wind battery system using LPSP methods," in International conference on Systems and Control, Batna, 2017.
Bank of Namibia, "Bank of Namibia-Home," Bank of Namibia, [Online]. Available: https://www.bon.com.na/#. [Accessed 12 October 2017].
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