Design and research on power network dispatching integration of smart grid

Based on the smart grid plan of dispatching technical support system which is put forward by State Grid Electrical Power Dispatching & Communication center, this paper proposes the functional objective about how to realize the smart grid dispatching technical support system plan in the present dispatching system. At first, this paper points out that the PMU can be rebuilt to make it have regulating and control function. So, the SCADA and fault recorder can be replaced by PMU completely to make the data aquisition integrated. Then, the Oracle database and PI database which can be used as uniform platform of dispatching department are indexed. The PI database can be employed for storing dynamic data. The Oracle database can be used for storing electrical power network model and structure. So, power network information can be effectively managed. Finally, based on the analysis of EMS system, WAMS system, dynamic preventive alarm and auxiliary decision system, generator plan security checkout system and power load forecast system, integrating these application system can come true. All function can be realized by the integration system. Also, the new functions such as predicted operation mode of power system, economical analysis of power system operation, on-line section margin power calculating, power supply ability evaluation, etc are indicated.