Abstract:Bi-direction power flow, massive data processing and communication obstruction are problems urgently to be solved in active distribution network (ADN) which is with high penetration of distributed generation. Distribution management system (DMS), which is developed based on traditional distribution network, is difficult to cope with the needs of information modeling and data management for ADN. Firstly, this paper summarizes research results and development direction of DMS at home and abroad in recent years. Secondly, four key technologies for active distribution management system (ADMS) are proposed, including information model and communication technology, big data analysis and processing technology, active control method and dynamic networking. Then, the first domestic ADMS demonstration project is employed to demonstrate the function realization of the relevant key technologies applied in ADMS. Finally, a three-layer control architecture of ADMS is proposed, which realizes hierarchical coordination and control through the coordination among different levels of control dimension, time dimension and space dimension, and thus the problems of massive data processing and flow communication obstruction could be solved. This research can provide experience and reference for follow-up ADMS.