Traditional graphical visualization of the power system is with several deficiencies， such as heavy maintenance workload， difficulties in exchange of graphical information. The idea of automatic generation of diagrams characterized with automatic maintenance， full coupling of diagrams and models， and without dependence on graphics tools is put forward. Based on common information model（CIM），the improved method of self-generated topology diagrams including substation and single-line diagrams is proposed. Dynamic diagrams which visualize current state and monitoring indicators of the power system are introduced.Three-dimensional visualization technology is used to draw those diagrams. Then a platform of early-warning and surveillance for multiple indicators is formed. The platform has been put into real operation in the actual grid.