Abstract This paper proposes an islanding detection and control strategy to realize the stable and autonomous operation of microgrids using the virtual synchronous generator (VSG) concept under unplanned grid reconfigurations (e.g., islanding operation). Instead of a design-oriented method, this paper presents a detailed and comprehensive theoretical analysis and draws a brief conclusion, which is easy to implement and still effective under complex situations. Based on the results of mutation sequence and voltage oscillation, a rapider and more reliable islanding detection algorithm is proposed, which hardly needs parameter design. Comparing with frequency measured passive detection method, the proposed algorithm has higher detection speed and reliability. The feasibility of the proposed islanding detection and control scheme is verified by extensive simulations.

中文翻译：

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基于下垂特性的虚拟同步发电机孤岛检测

摘要 本文提出了一种孤岛检测和控制策略，以在计划外电网重构（例如孤岛运行）下使用虚拟同步发电机（VSG）概念实现微电网的稳定和自主运行。本文没有采用面向设计的方法，而是进行了详细而全面的理论分析并得出了一个简短的结论，该方法易于实施，在复杂情况下仍然有效。基于突变序列和电压振荡的结果，提出了一种几乎不需要参数设计的更快速、更可靠的孤岛检测算法。与频率测量被动检测方法相比，该算法具有更高的检测速度和可靠性。