The power grid in China has a series of problems of aged infrastructure, lack of resources and increased energy demand. The construction of smart grid is an important way to solve the above problems. The energy management and optimal adjustment in distributed power grid is the key for the system function realization, and several issues should be addressed: 1) How to effectively manage the uncertainties of the intermittent power sources; 2) How to manage the energy transferring equipment and diversities of the load varieties; 3) Under different operational constraints, how to realize the high-level unification for multi-source distribution network economic operation and the reliability of power supply. The project will focus on these tasks based on load models considering the dual direction of the information between the energy suppliers and end users. It can reduce the energy generation cost, improve the energy quality, decrease the tariff, carbon emission and satisfy the user demands. The research will provide new infrastructure and technology support to smart grids with broad industrial application prospect.