With the high integration of power electronic technologies in microgrids, the reliability assessment considering power electronic devices has become a hot topic. However, so far no research has considered the impact of the operation failure probability of power electronic equipment on the overall reliability of the microgrid. This paper aims to construct a holistic operation failure rate model of power electronic systems based on the overall reliability assessment of islanded microgrid with high penetration of renewable energy sources (RESs). In addition, to improve the reliability of islanded microgrid, the conventional battery energy storage system (BESS) is replaced by the hybrid energy storage system (HESS). Based on the proposed model, the operation failure models for the power electronic modules in microgrid are built and tested, and then the sensitivity analysis is performed for exploring the influence of various factors on the reliability of the microgrid.

中文翻译：

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考虑电力电子设备运行故障的孤岛微电网可靠性评估与改进

随着电力电子技术在微电网中的高度集成，考虑电力电子设备的可靠性评估已成为热门话题。然而，到目前为止，还没有研究考虑电力电子设备的操作失败概率对微电网的整体可靠性的影响。本文旨在基于具有高渗透率的可再生能源的孤岛微电网的整体可靠性评估，构建电力电子系统的整体运行失效率模型。另外，为了提高孤岛微电网的可靠性，传统的电池储能系统（BESS）被混合储能系统（HESS）取代。基于该模型，建立并测试了微电网中电力电子模块的运行故障模型，