Research On Correction Of Numerical Simulation Error Based On WAMS

Power system dynamic simulation is a essential way to investigate power system dynamic process, the validity of simulation is determined by the accuracy of system model and parameters, post simulation of several blackout and a cosmically system disturbance testing found that real power system dynamic process can't be recurred in electromechanical transient simulation using existing simulation model and parameters. This paper proposed a new method to correct parameter errors that lead to simulation error through electromagnetic transient analysis. The validity of the proposed method has been verified.Trajectory Sensitivity Theory is an effective method to analysis how parameters effect dynamic behavior of a dynamic system. Different parameter has different effect. In this paper, we deduce sensitivities of rotor angle respect to synchronous machine and its control system parameters, and analysis the relative relation between these sensitivities. Sensitivity analysis is useful to correct parameter errors that lead to simulation error.