With the rapid growth of distributed renewable energy systems, energy sharing brings a practical solution to mitigate mismatching between intermittent electricity generation and building demand. In past research, energy sharing was designed mostly for onshore energy integrated systems and is commonly realised with the assistance of microgrids, distributed battery storage, or peer-to-peer energy trading. This research innovatively proposed a distant energy sharing between the ocean energy-supported coastal office building and hotel building by ten electric vehicles, enabling the circulation of ocean renewable energy between two buildings. This project aims to accomplish maximum technical, environmental and economic benefits for the stakeholder. Using bidirectional vehicle-building interaction, advanced control algorithms, including shifting vehicle batches, sizing renewable capacity, and involving stationary batteries, are implemented successively in the TRNSYS simulation as analysis groups to enhance the current system's performance. According to the results, the vehicle-based bidirectional energy sharing between these two buildings can attain a relative net present value of 49.18 million HKD and a weighted matching index of 0.63. After implementing advanced controls with stationary batteries, the system achieved a relative net present value of 62.15 million HKD with an improved matching index of 0.70. Both batteries contributed to increase the matching performance of the system, but the increase in battery capacity reduces the benefit due to their replacement cost. This research developed an energy management system for effectively utilising electric vehicles and coastal renewable energy for distant energy sharing. It elucidated the technological, environmental, and economic benefits to the stakeholders for effective decision-making.

中文翻译：

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基于电动汽车的零排放沿海办公楼和酒店建筑之间的远程能源共享


随着分布式可再生能源系统的快速增长，能源共享为缓解间歇性发电与建筑需求之间的不匹配带来了切实可行的解决方案。在过去的研究中，能源共享主要是针对陆上能源综合系统设计的，通常借助微电网、分布式电池存储或点对点能源交易来实现。该研究创新性地提出通过十辆电动汽车在海洋能支撑的沿海办公楼和酒店建筑之间进行远程能源共享，实现海洋可再生能源在两栋建筑之间的循环。该项目旨在为利益相关者实现最大的技术、环境和经济效益。利用双向车辆制造交互，先进的控制算法（包括改变车辆批次、确定可再生能源容量以及涉及固定电池）作为分析组在 TRNSYS 仿真中相继实施，以增强当前系统的性能。结果显示，两栋建筑之间的车辆双向能源共享可实现相对净现值4918万元，加权匹配指数为0.63。采用固定电池进行先进控制后，系统实现相对净现值6215万元，匹配指数提高0.70。两种电池都有助于提高系统的匹配性能，但电池容量的增加会因其更换成本而降低效益。该研究开发了一种能源管理系统，可有效利用电动汽车和沿海可再生能源进行远程能源共享。 它向利益相关者阐明了技术、环境和经济效益，以便做出有效的决策。