Research And Practice Of Onlin Data Integration In Power Dispatch Center

Power grid interconnection and electricity market development bring challenges to the safe and stable operation of power systems. Gradually, the EMS applications and stability analysis with offline data could not met the demand of the safe operation of large-scale power systems. Especially, the operation status of power grids has changed significantly in the face of major disasters. The algorithm is needed urgently, based on which, the detailed model of large-scale power grid is formed automatically using online calculation data and offline data. Then it is possible to carry out the online stability analysis of large-scale power grid. However, the characteristics of online calculation data and offline data are independent modeling and decentralized maintenance, so forming large-scale power flow data manually is difficult, which often spends many professionals a few weeks or more. It is impossible to carry out online analysis of large-scale power grid rapidly. So, the research and development of integrating online calculation data and offline data is very significant. The main work of this paper is as follows:1. According to the goal of online data integration and the individual characteristics of online calculation data and offline data, the two schemes of online data integration is proposed and realized, which include offline data refreshed with online calculation data and offline data replaced with online calculation data. And the technical difficulties of two schemes are analyzed in detail;2. Some key technologies are researched and realized. They are as follows: state estimation based on parallel technology of OpenMP; splicing the online calculation data; forming equipment maps; adjusting the topology of power grid; adjusting the boundary load flow;3. The editing tool of power grid is developed.4. The technology of online data integration proposed by this paper has been applied to state grid, regional grids and provincial grids of China. Integrated data is provided for the online security assessment & early warning, accident analysis and security check of generation plan.