Which standard outlines the testing procedure for islanding prevention measures for utility-interconnected photovoltaic inverters?

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The correct choice is the standard that specifically addresses the testing procedures for islanding prevention measures in utility-interconnected photovoltaic (PV) inverters. This particular standard focuses on the performance requirements and testing methods necessary to ensure that when there’s a loss of utility power, the inverter ceases to supply power to the grid, thereby preventing potential hazards associated with islanding conditions.

IEC 62116 is essential because it provides detailed procedures for testing the effectiveness of these measures. It outlines the specific testing methodologies that ensure the inverters can detect a loss of grid voltage and shutdown accordingly, which is vital for safety and compliance with regulations.

In contrast, IEEE 1547 sets forth the overall interoperability and interconnection standards for distributed resources, including PV systems, but does not focus exclusively on the testing methods for islanding prevention. IEC 61557 relates to testing equipment for electrical safety and does not cover inverters specifically. IEEE 499 pertains to the classification of power electronics and does not focus on testing islanding phenomena. As a result, IEC 62116 is the authoritative standard for testing islanding prevention measures in photovoltaic inverters.

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