A multi-version management method of the grid model based on the model set and the difference model

In the current EMS, the version management of model is limited in the mode of saving the whole model based on the changed grid. A multi-version management method of the grid model based on the model set and the difference model is proposed in this paper, the model of application and space dimension is divided into the corresponding version to management. Multi-version management Using model set as a baseline and the superposition of difference model of different effective time improved the flexibility of model history back, future model modeling and application model transformation. It realized the harmonious and unification of real-time monitoring of power grid and the historical and future grid analysis at the grid model level, let the users can study of time, space and application of three-dimensional grid analysis very conveniently and provides important basis for scientific decision-making.