Abstract Microgrids are emerging as a crucial component of the modern power system owing to significant developments in renewable energy-based distributed generation technologies and worldwide growing concern about the environmental hazards caused by the conventional coal-based power generation units. However, the addition of the distributed generation units and the ability of the microgrids to operate both in the grid-connected mode and the islanded mode have thrown a new set of challenges for the protection researchers because of the bidirectional power flow, uncertainty about the amount of power flow and wide variations in the fault current magnitude depending upon a variety of factors such as mode of operation, the structure of the network, and type, rating, location and number of distributed generation units. In this work, the challenges in the protection of a microgrid system with both inverter interfaced distributed generations (DGs) and synchronous generator based DGs are analysed and a comprehensive review of the available algorithms used for feeder protection in the microgrid is presented.

中文翻译：

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具有逆变器接口的分布式发电机组的微电网保护算法——综述

摘要 由于基于可再生能源的分布式发电技术的重大发展以及全球对传统燃煤发电机组造成的环境危害的日益关注，微电网正在成为现代电力系统的重要组成部分。然而，分布式发电机组的加入以及微电网在并网模式和孤岛模式下运行的能力给保护研究人员带来了一系列新的挑战，因为双向潮流，数量的不确定性功率流和故障电流幅度的广泛变化取决于各种因素，例如运行模式、网络结构以及分布式发电机组的类型、额定值、位置和数量。在这项工作中，