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Test of anti-islanding protections according to IEC 62116: An experimental feasibility assessment

机译:符合IEC 62116的防孤岛保护测试:实验可行性评估

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One of the main issues concerning the Inverter based Distributed Generators (DGs) is the possibility that inverters could feed parts of the public grid, even when the grid is disconnected from the main power system. Such a condition, that is called unwanted island, is potentially critical both for safety and for consumers' operations. In order to avoid unwanted islands, it's mandatory equipping the generating plant with an Interface Protection (IP) which has to detect the islanding condition and, in this case, to disconnect the generator from the public grid. Several methods for identifying island condition have been proposed, both passive and active, each one characterized by its pros and cons. The standard IEC 62116 was promulgated with the aim of regulating a test procedure to evaluate the IP effectiveness of PhotoVoltaic (PV) inverters independently from the island detection method implemented. The paper discusses the test procedure proposed by the standard IEC 62116 and presents some experimental activities developed by RSE spa, aimed at the assessment of test feasibility and effectiveness.
机译:与基于逆变器的分布式发电机(DG)有关的主要问题之一是,即使电网与主电源系统断开连接,逆变器仍可能为部分公共电网供电。这种情况称为无用孤岛,对安全和消费者的操作都可能至关重要。为了避免出现不必要的孤岛,必须为发电厂配备接口保护(IP),该保护必须检测孤岛状况,在这种情况下,必须断开发电机与公共电网的连接。已经提出了几种识别岛屿状况的方法,包括被动和主动两种,每种方法都有其优缺点。颁布标准IEC 62116的目的是调节测试程序,以独立于实施的孤岛检测方法来评估光伏(PV)逆变器的IP有效性。本文讨论了标准IEC 62116提出的测试程序,并提出了RSE spa开发的一些实验活动,旨在评估测试的可行性和有效性。

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