T/JES 002-2025 The auxiliary decision-making technology requirements for the DC system of a hybrid AC/DC power grid

Scope

Main technical content: The standard specifies the basic technical requirements for auxiliary decision-making of DC systems in AC/DC hybrid grids. It is applicable to the design, R&D, testing, and operation of auxiliary decision-making technologies for DC systems in AC/DC hybrid grids in scenarios such as multi-source DC grid connection, AC grid operation support, DC system power balance and voltage control, start-up/shutdown, protection, and restoration. The auxiliary decision-making of DC systems should be selected based on comprehensive consideration of the topology and wiring mode of the AC/DC hybrid system, the strength of the AC grid, and the type of converter stations, and should meet the overall requirements in multiple scenarios. The auxiliary decision-making of DC systems should meet technical requirements in three aspects: information interaction, control decision-making, and effect evaluation and feedback. Information interaction obtains key components of AC/DC hybrid grids and data required for decision-making from the dispatch automation system through data interfaces. Control decision-making matches control modes for different operation scenarios and calculates and issues control instructions at various levels. For each auxiliary decision-making, reasonable effect evaluation and feedback should also be carried out.

Development Information

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