The establishment of isolated microgrid is of great significance in solving power supply problems in offshore islands or remote mountainous areas. Aiming at the isolated microgrid containing photovoltaic, photothermal, wind, diesel, and energy storage, a three-objective sizing optimization model of the microgrid is proposed considering comprehensive economy cost, deficiency of power supply probability (DPSP), and renewable energy discard rate (REDR). The three-objective sizing optimization model was solved by the improved multiobjective grey wolf optimization algorithm. An island was taken as an example to optimize the sizing of the microgrid, and the rationality of the proposed three-objective model was verified. The feasibility of the improved multiobjective grey wolf optimization (IMOGWO) was verified by comparing with the multiobjective grey wolf optimization (MOGWO). Three representative solution sets and a set of compromise solution sets are obtained by simulation, and the results satisfied the load demand. And the DPSP and the REDR are reduced by 7.55% and 6.29% by using the IMOGWO. The designed and analyzed hybrid renewable energy system model might be applicable to around the world having similar climate conditions.

中文翻译：

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含光伏/光热/风/柴油/电池的隔离微电网的优化尺寸

孤立微电网的建立对于解决海岛或偏远山区的供电问题具有重要意义。针对光伏、光热、风能、柴油、储能等孤立微电网，提出综合经济成本、供电概率不足、可再生能源废弃率三目标微电网规模优化模型。 RED））。采用改进的多目标灰狼优化算法求解三目标尺寸优化模型。以某岛为例对微电网规模进行优化，验证了所提出的三目标模型的合理性。通过与多目标灰狼优化（MOGWO）的对比，验证了改进的多目标灰狼优化（IMOGWO）的可行性。通过仿真得到三个有代表性的解集和一组折衷解集，结果满足负载需求。使用IMOGWO后DPSP和REDR分别降低了7.55%和6.29%。设计和分析的混合可再生能源系统模型可能适用于世界各地气候条件相似的地区。