Study On Power Flow Calculation Based On The Generalized Tellegen's Theorem

Power flow calculation is the most important and fundamental algorithm in power system, which is the basis of calculating system stability and safe economy running. Because of the peculiar position and effect of the power flow calculation, it's important to seek power flow calculation method which is superior in calculation speed and convergence.In this dissertation, by studying in details traditional current-injection model, the improved current-injection model power flow calculation algorithm is presented. The algorithm processes specially generator nodes, according the form of element with load nodes in Jacobi matrix. Thus, in reason for the simplify of Jacobi matrix's calculation, the calculation can be decreased and calculation speed can be improved, in the course of power flow calculation.Perturbation method based on the generalized Tellegen's Theorem is used in the current-injection model. The algorithm of current-injection model based on the general Tellegen's Theorem is presented. The power flow calculation speed is improved through the algorithm.In this dissertation, perturbation method of the Generalized Tellegen's Theorem is applied to decoupled power flow method. A new decoupled power flow method based on the Generalized Tellegen's Theorem is presented and broadens application domain of the Tellegen's Theorem.