A review on islanding detection methods compatible with advanced gird support functionalities on photovoltaic system methods

Article Type:
Research/Original Article (دارای رتبه معتبر)

According to wide variety of advantages of distributed generation units, especially those using clean and renewable energies, their installation are dramatically increasing in distribution networks. Among renewable energy generators, photovoltaic generation units have been paid more attention compared to other technologies because of clean energy generation, simple operation and maintenance, and availability in most areas. Despite the mentioned advantages, connecting the photovoltaic generation units to the distribution network will cause problems in the field of network protection. These include the possibility of overlapping relays and their non-coordination, bidirectional feeding network, and the occurrence of an islanding state. On the other hand, by increasing the penetration of these generators, the activation of advanced grid support functionalities such as active and reactive power regulations, low voltage ride through capability (LVRT) and seamless transition to islanded operation mode are included in current grid codes to compensate for their unpredictable energy production. Since these ancillary services can disrupt the operation of islanding detection methods, it is necessary to provide islanding detection method compatible with mentioned ancillary services. In this paper, islanding detection methods compatible with the advanced grid support functionalities such as power regulations, low voltage ride through, and seamless transition to islanded mode are reviewed.

Electrical Asre Magazine, Volume:8 Issue: 16, 2022
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