Abstract: State Grid Haining Power Supply Company makes full use of the pioneering exploration experience of Jiaxing city energy Internet construction. By constructing the flexible resource standard construction system of charge and storage of the source network, it improves the flexibility of the distribution network, divides the distribution network into different levels according to voltage level and deconstructs it into the smallest autonomous unit, establishes the response mechanism of "one state, one policy", and realizes the state control of resources according to the smallest unit level. Develop and construct a coordinated control system of source network, load and storage based on the functional architecture of "three layers, three states and three policies", realize the "hierarchical, regionalized and autonomous balance" of the distribution network, formulate a set of effectiveness evaluation index system suitable for the evolution of the county-level distribution network from the traditional distribution network to the digital-intelligent new power system, and strive to improve the disturbance resistance and comprehensive energy efficiency of the distribution network. It has formed a "resource + control" system of digital traction, which is the path of the demonstration construction of the new digital-intelligent power system at the county level, with Haining Jianshan New District as the core of the pilot construction of the demonstration area.