IEEE 1547-2018 Protection Interface Specification Template (Excel)

IEEE Std 1547-2018 establishes technical requirements for interconnecting distributed energy resources (DERs), especially inverter-based systems such as solar PV, battery storage, and wind, with the grid. A critical challenge in modern, inverter-dominated networks is that traditional electromechanical or digital relays—designed for synchronous generator behavior—may misoperate due to the unique fault current contribution, low inertia, and fast control dynamics of IBRs. The Protection Interface Specification Template addresses this by providing a vendor- and utility-agnostic Excel framework to systematically capture protection-related parameters including voltage/frequency ride-through curves, intentional islanding detection methods, fault current injection limits, reclosing coordination windows, and logical interlocking conditions (e.g., trip blocking during grid faults). Each tab in the Excel file corresponds to a specific functional domain—such as 'Voltage Ride-Through', 'Fault Response', 'Protection Settings', and 'Interface Signals'—with standardized columns for requirement ID, IEEE 1547 clause reference, DER capability, utility acceptance criteria, test method, and verification status. This structure enables automated validation checks, audit readiness, and seamless integration into utility interconnection review workflows, significantly reducing ambiguity and engineering rework during commissioning. Moreover, the template supports both grid-forming and grid-following inverter modes, aligning with evolving grid codes and facilitating future compatibility with IEEE 1547a-2024 amendments.