Abstract:Focusing on the characteristics of rich endowment of hydropower resource in Sichuan and similar provinces, the exploration for theoretical model of new power system with high-proportional hydropower (HHNPS) is carried out. Firstly, the development orientation and value connotation of HHNPS are analyzed. Secondly, the basic connotation and correlation relationship of five key elements of new power system, namely “source-grid-load-energy storage-intelligens”, are proposed and analyzed. Then, the theoretical model framework of HHNPS is constructed and its evolution trend at different development stages are analyzed. Finally, the basic ideas of initial exploration and practice for new power system in Sichuan are introduced, which can provide a reference for the construction of new power system in similar areas nationwide.