Optimal Sizing and Assessment of a Renewable Rich Standalone Hybrid Microgrid Considering Conventional Dispatch Methodologies

Md. Fatin Ishraque, Sk. A. Shezan, Md. Sohel Rana, S. M. Muyeen, Akhlaqur Rahman, Liton Chandra Paul and Md. Shafiul Islam
Additional contact information
Md. Fatin Ishraque: Department of Electrical, Electronic and Communication Engineering, Pabna University of Science and Technology, Pabna 6600, Bangladesh
Sk. A. Shezan: Department of Electrical Engineering and Industrial Automation, Engineering Institute of Technology, Melbourne, VIC 3283, Australia
Md. Sohel Rana: Department of Electrical and Electronic Engineering, Rajshahi University of Engineering & Technology, Rajshahi 6204, Bangladesh
S. M. Muyeen: Department of Electrical Engineering, Qatar University, Doha 2713, Qatar
Akhlaqur Rahman: Department of Electrical Engineering and Industrial Automation, Engineering Institute of Technology, Melbourne, VIC 3283, Australia
Liton Chandra Paul: Department of Electrical, Electronic and Communication Engineering, Pabna University of Science and Technology, Pabna 6600, Bangladesh
Md. Shafiul Islam: Department of EEE, Varendra University, Rajshahi 6204, Bangladesh

Sustainability, 2021, vol. 13, issue 22, 1-23

Abstract: This paper presents an evaluation of the optimized design of an off-grid hybrid microgrid for alternative load dispatch algorithms with the determination of the most optimal sizing of each equipment, analyzing the voltage and frequency outputs and various costs of the proposed microgrids. Kushighat and Rajendro Bazar, two geographical locations in Bangladesh have been taken as test sites. The proposed microgrids incorporating diesel generator, renewable resources, storage device, and 23.31 kW of demand have been optimized for five conventional load dispatch methodologies: HOMER predictive dispatch, Load Following, Generator Order, Cycle Charging, and Combined Dispatch to reduce the system’s net present cost, gas discharge and cost of energy. HOMER (Hybrid Optimization of Multiple Electric Renewables) software has been used for the analysis to determine the optimal sizes and costing and the voltage-frequency performances of the microgrids are analyzed using MATLAB/Simulink. From our analysis, load following is determined as the superior approach with a minimum operating cost of 3738 USD, net present cost of 152,023 USD, CO 2 discharge of 3375 kg/year and cost of energy of 0.208 USD /kWh along with a steady voltage-frequency output. Combined dispatch is determined as the worst strategy for the proposed microgrids with the highest energy cost of 0.532 USD /kWh, the operational cost of 15,394 USD, net present cost of 415,030 USD, and high CO 2 discharge. At the end of this work, a comparative analysis between the proposed design, another hybrid, and traditional generation plant is also presented. The findings of this work will be appropriate for any location with an identical demand profile and meteorological estate.

Keywords: techno-economic study; dispatch methodology; renewable; optimization; hybrid microgrid; power system response (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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