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Key technology development needs and applicability analysis of renewable energy hybrid technologies in off-grid areas for the Rwanda power sector

机译:卢旺达电力部门离网地区可再生能源混合技术的关键技术开发需求和适用性分析

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摘要

Until recently, the Rwanda power sector increased rapidly to double the 2010 installed capacity. The energy consumption in Rwanda experienced a steady rise correspondingly with the population and modern socio-economic life. Consequently, Rwanda household access to electricity increased to 53% by September 2019. Not only does 47% of Rwanda's population lack electricity access, there are persistent power failures and the grid is also unstable. Using renewable energy hybrid technologies in off-grid areas might be a solution to this problem. However, the high cost of renewable energy hybrid systems has led to its slow adoption in many developing countries. Hence, it is important to find the most appropriate hybrid combinations that reduce energy cost and access electricity generation that maximizes the available renewable energy resources. This paper examines some new technology development needs related to the power sector in Rwanda. Secondly, four different 100% renewable energy hybrid systems were designed and simulated to support rural and remote areas considering an average load demand of 158.1 kWh/day with a peak load of 18 kW. The hybrid systems simulation and optimization were obtained using HOMER (hybrid optimization model for electric renewables) software. The input data were obtained from National Aeronautics and Space Administration (NASA) for solar and wind resources, and hydro resources were from real-time field data for selected study site. The simulation results indicate hydro/solar/battery hybrid is the most cost-effective and environmentally viable alternative for off-grid rural electrification because of low net present cost (NPC) and least greenhouse gas emissions. The proposed hybrid combination could apply to other rural areas in the region and elsewhere in the world especially where climate conditions are similar.
机译:直到最近,卢旺达的电力部门迅速增长,使2010年的装机容量翻了一番。卢旺达的能源消耗随着人口和现代社会经济生活的增长而稳定增长。因此,到2019年9月,卢旺达的家庭电力供应增加到53%。卢旺达不仅47%的人口没有电力供应,而且持续存在电力故障,电网也不稳定。在离网地区使用可再生能源混合技术可能是解决此问题的方法。然而,可再生能源混合动力系统的高成本导致其在许多发展中国家的普及缓慢。因此,重要的是找到最合适的混合动力组合,以降低能源成本并获得可最大化利用可再生能源的电力。本文研究了与卢旺达电力部门相关的一些新技术开发需求。其次,设计和模拟了四种不同的100%可再生能源混合动力系统,以支持农村和偏远地区,考虑到平均负荷需求为158.1 kWh /天,峰值负荷为18 kW。使用HOMER(电力可再生能源的混合优化模型)软件获得了混合系统的仿真和优化。输入数据来自国家航空航天局(NASA)的太阳能和风能资源,而水力资源则来自针对选定研究地点的实时现场数据。模拟结果表明,水电/太阳能/电池混合动力是离网农村电气化的最具成本效益和环境可行性的替代方案,因为其净现值(NPC)低且温室气体排放量最少。提议的混合组合可以应用于该地区和世界其他地区的其他农村地区,尤其是在气候条件相似的地方。

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