This paper presents a new approach for islanding detection in distribution systems incorporating synchronous generator-based distributed generations. The proposed method first utilizes the dynamic equations of three electrical variables under islanding situations. The variables are: change of frequency; rate of change of frequency; and rotor angle deviation. Second, transformation of these variables is conducted in the space vector domain, which gives rise to three parameters, namely, semi-major axis, semi-minor axis, and inclination angle. Finally, exploiting these parameters, a decision boundary is established to classify grid events resulting in the formation of an island or not. The proposed method is comprehensively investigated under different operating conditions, which include excess/deficit of reactive/active power imbalance scenarios in the formed island containing different load-types (constant impedance, constant power, and constant current) with varying quality factor. A large variety of islanding and non-islanding events are generated using a practical distribution network simulated in real time on OPAL-RT digital simulation platform under the aforementioned operating conditions. A detailed evaluation of the proposed approach is conducted and it demonstrates the effectiveness of the method.

中文翻译：

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空间矢量域中使用电变量的分布式发电孤岛检测

本文提出了一种新方法，用于结合基于同步发电机的分布式发电的配电系统中的孤岛检测。所提出的方法首先利用孤岛情况下三个电变量的动态方程。变量是： 频率的变化；频率变化率；和转子角度偏差。其次，这些变量在空间矢量域中进行变换，得到三个参数，即长半轴、半短轴和倾角。最后，利用这些参数，建立决策边界以对导致孤岛形成的网格事件进行分类。在不同的操作条件下综合研究了所提出的方法，其中包括在包含不同负载类型（恒定阻抗、恒定功率和恒定电流）且品质因数不同的形成孤岛中的无功/有功功率不平衡情况的过量/不足。在上述操作条件下，使用在 OPAL-RT 数字模拟平台上实时模拟的实际配电网络，生成了大量的孤岛和非孤岛事件。对所提出的方法进行了详细的评估，并证明了该方法的有效性。在上述操作条件下，使用在 OPAL-RT 数字模拟平台上实时模拟的实际配电网络，生成了大量的孤岛和非孤岛事件。对所提出的方法进行了详细的评估，并证明了该方法的有效性。在上述操作条件下，使用在 OPAL-RT 数字模拟平台上实时模拟的实际配电网络，生成了种类繁多的孤岛和非孤岛事件。对所提出的方法进行了详细的评估，并证明了该方法的有效性。