Grid Connection Acceptance Spec for Electrochemical Energy Storage

This document, DL/T 2917—2025, is a Chinese electric power industry standard issued by the National Energy Administration, specifying technical requirements for grid connection acceptance of electrochemical energy storage stations. It applies to new, renovated, and expanded stations connected at 10kV (6kV) and above. The standard covers acceptance preparation, document review, on-site verification, and acceptance report preparation. Key prerequisites include completing subsystem and overall station commissioning per GB/T 42737, start-up acceptance per GB/T 43868, and signing grid connection dispatch agreements. Document review encompasses station basic information, engineering construction, grid connection test, and operation maintenance documents. On-site verification focuses on grid-related equipment and systems. The standard references numerous national standards for grid operation, power converters, battery management, and safety. It aims to ensure reliable and safe integration of energy storage stations into the power grid, supporting the growing role of electrochemical storage in modern power systems.