| According to the annual method of operation's report about power system of Shanghai and Beijing, author combines the truss structure of power system and the theory of the planning about domestic and international electric wire netting and the experience of planning. Through utilizing the situation to analyse to the electric wire netting grid structure , power overall arrangement , equipment in Beijing , Shanghai ,. According to the plan of power system , the construction of power system, dispatching of power netwoks systematic organizational system , power system's delamination and subarea , Idle work balances tactics , etc; author makes a concrete analysis. Author puts forward own some opinion about power system delamination and distriction, and organic adjustment , power system's planning, and get some feasible suggestions. The construction process of DSAS(Dynamic Security Assessment System) in Beijing grid dispatch institution is produced, and also, the examples applied in Beijing grid operation control of this system and its assistant assessment tools are analyzed from the aspects of power flow and Voltage Security. |