Construction of Transient Calculation Analysis Model Based on Power Grid Graph Model

With the large-scale integration of new energy, the requirements for the stability and reliability of the power system are increasing. Transient fault analysis, as a key in the design and operation of power systems, is of great significance for preventing and handling power grid faults. This paper presented the process of constructing a transient analysis model based on a power grid graph model, and used the constructed transient analysis model achieving simulation of transient analysis on the ten thousand level of power grid graph. the transient calculation analysis model based on power grid graph model is not only improve the efficiency and accuracy of transient fault analysis but also adapt to dynamic changes in power grid topology. In this paper, the main network topology, transient parameters, transient models, and transient faults of the power grid are modeled in a graph database firstly,and how to map the physical structure of the power grid to the graph model in the graph database is elaborated in detail; Then, the specific content of using the established model for transient fault design of selected unit and load equipment was described, including the binding and storage of transient parameters and transient models, the definition of transient faults, transient fault storage, and transient calculation model generation; Finally, a southern provincial power grid was utilized for the case study, the entire process of constructing the transient calculation analysis model results were listed in detail to verify the feasibility and progressiveness of the proposed graph constructing method, providing a foundation for the next step of transient model calculation.