Study on stand-alone power supply options for an isolated community
Study on stand-alone power supply options for an isolated community
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DOI：
10.1016/j.ijepes.2014.09.023
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发表时间：
2015-02
影响因子：
5.2
通讯作者：
T. Ma;Hongxing Yang;Lin Lu
中科院分区：
文献类型：
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作者：
T. Ma;Hongxing Yang;Lin Lu
香港有三个有人居住的岛屿不在电网覆盖范围之内。目前，它们由柴油发电机提供动力，燃料由驳船提供。为了减少对柴油的依赖，提高供电质量，政府计划在岛上探索当地可再生能源发电。在本研究中，为一个偏远的社区考虑了可再生能源和柴油发电等几种供电方案。进行了技术经济分析和详细的每小时模拟，以找到最佳的自治系统配置。结果从供电质量、生命周期成本、投资回收期和温室气体排放等方面进行了评估。研究了负荷变化对系统配置和成本的影响。可行性研究表明，太阳能-风能-柴油-电池混合系统能够提供最优的技术经济性能，并对该方案进行了详细的分析。研究还表明，对于由两个可调度源组成的系统，能源调度策略是非常重要的。与完全可再生能源系统相比，在混合能源系统中引入备用柴油发电机可能是一个更可行的选择，尽管需要高昂的柴油成本。
There are three inhabited islands in Hong Kong beyond the reach of the utility grid. Currently they are powered by diesel generators with fuel supplied by barge. To reduce dependence on diesel and improve power supply quality, the government is planning to explore locally available renewable energy for power generation on the islands. In this study, several power supply options such as renewable energy and diesel power generation were considered for one remotely located community. A techno-economic analysis and a detailed hourly simulation were performed to find an optimal autonomous system configuration. The results were evaluated in terms of power supply quality, life cycle cost, payback time, and greenhouse gas emission. The effects of load variation on system configuration and cost were also examined. The feasibility study demonstrates that the hybrid solar–wind–diesel–battery system could provide the optimal techno-economic performance, and this scenario was discussed with elaborate analysis. The study also shows that the energy dispatch strategy is very important for a system consisting of two dispatchable sources. Compared to a fully renewable energy system, the introduction of a back-up diesel generator in the hybrid energy system can be a more viable option, even though high diesel fuel cost is needed.