A Novel Method on Multi-area Network Model Merging for Energy Internet

In order to meet the demand of real time global network model for multi-area energy internet analysis and control, this paper presents a novel scheme on multi-area network model merging and obtaining the global model. An algorithm based on constrained state estimation is proposed for multi-region network model splicing. The network merging problem is translated into a state estimation model with boundary equality constraints. A predictor-corrector interior-point method is applied to solve the problem. Simulations are carried out on IEEE testing system and an actual power system, the results indicate that the proposed method can efficiently achieve online splicing of region power grid with different control centers.