T/ZDL 017-2023 Active Distribution Network Source-Grid-Load-Storage Coordinated Control Strategy Guidelines

Scope

Main technical content: 4. Overall principles 4.1 Based on the principles of hierarchical zoning and unit autonomy, the distribution network is divided into three layers according to voltage level: "substation layer, line layer, and station domain layer". These layers are further decomposed into the smallest autonomous units (single substations, single standard loops, and single transformer stations), enabling resource regulation at the hierarchical minimum unit level. 4.2 Control strategies are developed based on the different operating states of the hierarchical minimum autonomous units, establishing a "one state, one strategy" corresponding control system. The control centers of each hierarchical minimum autonomous unit adjust the available resources of the unit according to its operating state and formulate corresponding sub-strategies to achieve resource regulation based on the hierarchical minimum unit state. 4.3 There are nine strategies for each layer (substation layer, line layer, and station domain layer) under three different operating states, along with a strategy for the entire network in the power supply gap state. Together, these form a total of ten operation strategies for source-grid-load-storage coordinated control. 4.4 Each hierarchical autonomous unit operates under different strategies according to its different states, achieving unit autonomy. Resources of different units at the same hierarchical level can be mutually supported, and units at the upper hierarchical level can call upon resources of subordinate units at the lower hierarchical level, i.e., "horizontal mutual support and vertical collaboration". This builds a point-to-area intelligent control mechanism for the entire network, achieving the goal of "hierarchical zoning and autonomous balancing" for the source-grid-load-storage coordinated control system.

Development Information

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