并网与离网混合电力系统在尼日利亚大学建筑中的应用比较

IF 2.4 Q3 ENERGY & FUELS
C. Diyoke, M. O. Egwuagu, T. Onah, K. Ugwu, Eberechukwu Chukwunyelum Dim
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引用次数: 2

摘要

尼日利亚的大学依靠薄弱和不可靠的化石燃料电网,柴油发动机发电机(DEG)作为备用。然而,有可能使用风力涡轮机(WT)和太阳能光伏(PV)等主要可再生能源系统(RPS)衍生的电力系统来照亮校园,这些系统可以在线或离网,以可靠地改善能源结构和持续时间。本研究提出了最优混合电网和离网系统(OGS和OOGS)的比较分析,以服务于尼日利亚四个气候区域的大学建筑的需求负荷。使用HOMER Pro基于最小净当前成本(NPC)和电力成本(COE)来设计和选择系统。研究了电网和离网模式下95%的最小可再生比例对最优系统架构(OSA)和COE的影响。此外,还对关键变量对场地性能的影响进行了敏感性分析。结果发现,四个区域的OGS为PV/Converter (Conv), OOGS为PV/WT/DEG/battery (BB)/Conv, Port Harcourt (PH)为PV/DEG/BB/Conv。埃努古和PH的热带稀树草原和季风气候的OGS的COE分别比迈杜古里和卡诺的温暖半干旱气候区高10%和19%,约为0.09美元/kWh。OOGS的COE ($/kWh)在迈杜古里为0.21,在卡诺为0.245,在埃努古为0.275,在ph为0.338。强制性95% RF改变了架构并增加了除迈杜古里以外的所有地区的COE, COE略有改善,但NPC与其他地区一样更高。研究结果表明,该混合系统对于为尼日利亚不同地区的教育建筑提供更可靠和清洁的能源是有益和可行的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparison of the Grid and Off-Grid Hybrid Power Systems for Application in University Buildings in Nigeria
The Nigerian Universities rely on weak and unreliable fossil-based electric grids with diesel engine generators (DEG) as a backup. However, there is a potential to light up the campuses using power systems derived from primary renewable power systems (RPS) like wind turbine (WT) and solar photovoltaic (PV), that can be on or off-grid to improve the energy mix and duration reliably. This study presents the comparative analysis of the optimal hybrid grid and off-grid systems (OGS & OOGS) for serving the demand load of university buildings in four climatic regions of Nigeria. HOMER Pro is used to design and select the systems based on minimal net present cost (NPC) and cost of electricity (COE). The impact of a minimal renewable fraction of 95% on the optimal system architecture (OSA) and COE is studied for both grid and off-grid modes. Also, sensitivity analysis of the impact of key variables on performance for the sites is carried out. It is found that the OGS in the four regions is PV/Converter (Conv), while for the OOGS, it is PV/WT/DEG/battery (BB)/Conv except in Port Harcourt (PH), where it is PV/DEG/BB/Conv. The COE for the OGS in the Savana and monsoon climes of Enugu and PH are 10 and 19% more than that in the warm-semi arid climate zones of Maiduguri and Kano, which is approximately 0.09 $/kWh. The COE ($/kWh) for the OOGS is 0.21 in Maiduguri, 0.245 in Kano, 0.275 in Enugu and 0.338 in PH. An obligatory 95% RF changes the architecture and increases COE in all the locations except Maiduguri, with a slightly improved COE but higher NPC like other locations. It is established that the suggested hybrid system is beneficial and feasible for supplying more reliable and clean energy to educational buildings in different Nigerian locations.
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来源期刊
CiteScore
4.50
自引率
16.00%
发文量
83
审稿时长
8 weeks
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