The remote coastal areas face difficulties due to energy shortages and insufficient freshwater resources. To reduce the energy consumption of reverse osmosis desalination in coastal areas, this paper proposes an optimal configuration method of integrated energy system considering heat enhancement and combined operation of low-head seawater pumped storage and reverse osmosis. Firstly, the heat analysis of power to gas and the construction of the reverse osmosis temperature model considering heat enhancement are carried out, utilizing its reaction heat to preheat the reverse osmosis feed. Secondly, the reverse osmosis feed is supplied from the upper reservoir of the low-head seawater pumped storage, allowing the operating pressure of the reverse osmosis to be met by both the hydrostatic pressure of the upper reservoir and the high-pressure pump. Furthermore, the working efficiency of the reversible turbine is modeled by considering the operational characteristics of the seawater pumped storage. Then, a bi-level mixed-integer optimal configuration model with annual total cost and wind abandonment rate as evaluation indexes is established and solved. The results indicate that compared to the conventional system, the proposed system achieves a reduction of 4.30 % in annual total cost and 2.46 % in wind abandonment rate, resulting in more pronounced economic advantages and higher renewable energy utilization. Furthermore, the energy consumption of reverse osmosis is decreased by 26.62 %, and the energy utilization ratio of the seawater pumped storage is increased by 9.81 %, demonstrating superior performance in system energy efficiency.

中文翻译：

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考虑热增强与低扬程海水抽水蓄能与反渗透联合运行的综合能源系统优化配置


偏远的沿海地区由于能源短缺和淡水资源不足而面临困难。为降低沿海地区反渗透海水淡化的能耗，本文提出了一种考虑热量增强和低水头海水抽水蓄能与反渗透联合运行的综合能源系统优化配置方法。首先，利用其反应热对反渗透原料进行预热，对电转气进行热分析，构建考虑热增强的反渗透温度模型。其次，反渗透进料由低扬程海水抽水蓄能的上部储液池供应，允许反渗透的工作压力由上部储液罐的静水压力和高压泵来满足。此外，通过考虑海水抽水蓄能的运行特性，对可逆涡轮机的工作效率进行建模。然后，建立以年总成本和弃风率为评价指标的双水平混合整数最优配置模型并求解;结果表明，与传统系统相比，所提系统实现了年总成本降低 4.30 % 和弃风率 2.46 %，从而具有更明显的经济优势和更高的可再生能源利用率。此外，反渗透能耗降低了 26.62 %，海水抽水蓄能的能源利用率提高了 9.81 %，显示出卓越的系统能效性能。