Abstract In this study, the off-design performance of a Power-to-Gas process are predicted by means of a developed calculation model, implemented in commercial tool environments. With the aim to evaluate the behaviour of the several components in off-design conditions, specific calculation models have been integrated in the whole system model. Then, starting from a real wind production profile, four configurations of the Power-to-Gas system have been analysed, evaluating the annual operating time of the integrated Power-to-Gas/wind systems. In addition, in order to assess the cost effectiveness of the technology, a preliminary economic analysis has been performed. The results highlight that the most performant configuration is the one at ambient pressure, with the co-electrolyzer and the high temperature methanation section operating at the same temperature, showing a methane production of 184 ton/year and an overall efficiency of about 75%. At the current technology readiness level, the economic competitiveness of the process is strongly affected by the synthetic natural gas sell price.

中文翻译：

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结合可再生能源的电转气系统非设计性能的数值预测

摘要 在这项研究中，通过在商业工具环境中实施的开发计算模型来预测电转气过程的非设计性能。为了评估多个组件在非设计条件下的行为，特定的计算模型已集成到整个系统模型中。然后，从真实的风电生产剖面开始，分析了电转气系统的四种配置，评估了集成电转气/风电系统的年运行时间。此外，为了评估该技术的成本效益，还进行了初步经济分析。结果突出显示，性能最高的配置是在环境压力下的配置，共电解槽和高温甲烷化段在相同温度下运行，甲烷产量为184吨/年，综合效率约为75%。在目前的技术准备水平，该工艺的经济竞争力受到合成天然气售价的强烈影响。