Research on tool of intelligent verification for topology analysis in power grid dispatching

The topology analysis of power grid is mainly used for connectivity analysis of the whole grid, is the foundation of power system network analysis application software, the effect of topology analysis directly influences the use effect of application. In the modeling process of the energy management system(EMS) of power system, due to the big and complicated workload of operating personnel, often there is phenomena such as connection relations error or incomplete between network electrical equipment components of grid model, has affected the accuracy of grid topology analysis results to a certain extent. In response to this problem, with the general principles of power grid design as a starting point, based on power system topological representation method, a basic knowledge base for topology analysis of network electrical equipment components in grid model is designed, by setting certain verification principle, based on mixed reasoning mechanism of both rule-based and case-based reasoning, and the system of topology analysis intelligent verification is built with the functions of automatic extension and modify for power grid model, it also can complete correcting automatically for topology analysis results. After that, adopting parameter identification technology, making use of the real-time cross-section data which is uploaded by grid, the function of automatic modification grid parameter errors is realized through real-time comparison analysis. This tool is applied in reactive power optimization system in Hainan grid, and it is proved that the accuracy of calculation results of power flow and reactive power optimization of the whole network is improved.