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首页> 外文会议>2015 IEEE IAS Joint Industrial and Commercial Power Systems/ Petroleum and Chemical Industry Conference >A framework for investigative analysis of islanding and pre-islanding behaviour of solar PV inverters connected to distribution grids
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A framework for investigative analysis of islanding and pre-islanding behaviour of solar PV inverters connected to distribution grids

机译：用于调查与配电网连接的太阳能光伏逆变器的孤岛和预孤岛行为的调查框架

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The commercially available, inverter-resident anti-islanding methods are expected to be challenged by the future scenario of increasing photovoltaic penetration and some have shown limitations presently. A predictive approach for islanding-detection can be a smarter solution than the existing reactive approach. Accordingly a framework having a modified IEEE radial test feeder with a solar photovoltaic inverter has been developed in Matlab-Simulink to investigate the phenomenon and explore possible precursors to it. Islanding behaviour in the region of common coupling was studied to verify the modeling approach. Situations deemed to occur commonly in a high-penetration scenario were simulated and were found to result in anomalous currents that might cause unintentional islanding. Results from RTDS study validated the same. Among other observations, the excessive reactive power in the modified network was found to affect the total harmonic distortion in grid-side current before the simulated islanding and the circuit breaker arcing current after islanding.
机译：市场预期的逆变器常驻防孤岛方法将受到光伏普及率提高的未来情况的挑战，其中一些方法目前显示出局限性。与现有的被动方法相比，用于孤岛检测的预测方法可能是一种更智能的解决方案。因此，已经在Matlab-Simulink中开发了一种带有改进的IEEE径向测试馈线和太阳能光伏逆变器的框架，以研究该现象并探索其可能的先兆。研究了在公共耦合区域的孤岛行为，以验证建模方法。对高渗透率情况下通常发生的情况进行了模拟，结果发现它们会导致异常电流，从而可能导致意外的孤岛现象。 RTDS研究的结果验证了相同的结果。在其他观察结果中，发现修改后的网络中过大的无功功率会影响模拟孤岛之前电网侧电流的总谐波失真，以及孤岛之后断路器的电弧电流。

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