Abstract This study investigates how a district with a high capacity of non-controllable renewable electricity generation can entirely self-consume its production at a community level either directly or for heating and cooling, thus potentially fulfilling the concept of "Renewable Energy Community". It investigates the potential role of storage systems and polygeneration in renewables self-consumption, by also exploiting the synergies among different energy networks in a real residential district with high PV penetration. Two scenarios were modeled other than the "baseline": the first one evaluating the optimal portfolio of energy conversion and storage technologies, and a second one achieving the same goal only using batteries. Both scenarios proved to be a viable solution to exploit the excess of electricity production from the PV plants in the district only through local self-consumption. The results show that a multi-energy system is the most cost-effective solution in doing so, exploiting polygeneration technologies (CHP) and the storage of energy as thermal, electrical, and chemical through power-to-gas. In particular, the least cost solution entails a 42 kWe CHP micro gas engine fueled by a natural gas-hydrogen blend, a 135 kWh battery system, and a 2830 kWh hydrogen storage.

中文翻译：

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可再生能源渗透率高的可再生能源社区的储能和多能源系统

摘要 本研究调查了具有高容量不可控可再生能源发电的地区如何在社区层面完全自用其生产，无论是直接消费还是供暖和制冷，从而潜在地实现“可再生能源社区”的概念。它通过利用光伏渗透率高的真实住宅区中不同能源网络之间的协同作用，研究了储能系统和多联产在可再生能源自用中的潜在作用。除了“基线”之外，还对两种场景进行了建模：第一种是评估能量转换和存储技术的最佳组合，第二种是仅使用电池实现相同目标。两种方案都被证明是一种可行的解决方案，可以仅通过本地自用来利用该地区光伏电站的过剩电力。结果表明，多能源系统是这样做的最具成本效益的解决方案，它利用多联产技术 (CHP) 和通过电转气将能量存储为热能、电能和化学能。特别是，成本最低的解决方案需要一台 42 千瓦的 CHP 微型燃气发动机，以天然气-氢气混合物为燃料，135 千瓦时的电池系统和 2830 千瓦时的氢存储。