General Technical Specification for Grid-Forming Converter

This document specifies the general technical requirements for grid-forming converters, including normal service conditions, appearance, degree of protection, technical requirements, simulation models, parameters, marking, packaging, transport, and storage. It applies to grid-forming energy storage converters, photovoltaic inverters, and full-power wind turbine grid-connected converters with AC port voltage at 35kV and below. Key definitions cover grid-forming control, inertia and damping characteristics, phase angle jump response, equivalent transient impedance, and dynamic response times. The standard references relevant power quality and equipment standards. Test methods and rules are provided to ensure compliance. This specification aims to guide design, manufacture, testing, inspection, operation, maintenance, and repair, promoting reliable and stable grid integration of renewable energy systems.