Odetoye O A, Olulope P K, Olanrewaju O M, Alimi A O, Igbinosa O G
Department of Electrical and Information Engineering, Landmark University Omu-Aran, Kwara State, Nigeria.
Heliyon. 2023 Aug 18;9(9):e19189. doi: 10.1016/j.heliyon.2023.e19189. eCollection 2023 Sep.
This paper presents a novel use of the HOMER Software for the multi-year economic, environmental, and energetic assessment of a proposed multi-source standalone renewable microgrid. A rural-but-rapidly-commercializing community in Nigeria's middle belt was used as a case study, with an average power demand of 975 kW and average consumption of 23.028 MWh/day. A generation mix of flat-plate photovoltaic (PV) array (3 MW nominal), concentrated solar thermal (CSP, 9 MW nominal), and small hydropower (SH, up to 200 kW), with battery storage (200 strings), system converter (2.5 MW nominal) using the Oshin River was recommended as the optimal system for minimizing the cost of electricity (LCOE) in HOMER. A diesel-based system was also simulated and a multiyear analysis for a 25-year period shows that the Net Present Cost (NPC) of $55.7 million for the renewable microgrid is vastly superior to the $408 million for the diesel microgrid, with LCOE of $0.26 and $1.01 per kWh respectively. The system also saved up to 7540 metric tons of CO2 per year in emissions. The results of the study indicate the proposed microgrid as an economically and environmentally superior alternative to diesel generators in the long term, and as deserving consideration for similar applications.
本文介绍了HOMER软件在对拟议的多源独立可再生微电网进行多年经济、环境和能源评估方面的一种新用途。以尼日利亚中部地带一个农村但快速商业化的社区为案例研究，其平均电力需求为975千瓦，日均耗电量为23.028兆瓦时。建议采用平板光伏阵列（标称功率3兆瓦）、聚光太阳能热发电（CSP，标称功率9兆瓦）和小型水电（SH，最高200千瓦）的发电组合，并配备电池储能（200串）以及使用奥申河的系统转换器（标称功率2.5兆瓦），作为在HOMER中使电力成本（LCOE）最小化的最优系统。还对基于柴油的系统进行了模拟，为期25年的多年分析表明，可再生微电网的净现值成本（NPC）为5570万美元，远优于柴油微电网的4.08亿美元，其LCOE分别为每千瓦时0.26美元和1.01美元。该系统每年还可减少多达7540公吨的二氧化碳排放。研究结果表明，从长期来看，拟议的微电网在经济和环境方面优于柴油发电机，值得类似应用考虑。
