Title: The Influence of Measured Trajectory Based Model Parameters Correcting on Simulation Precision of Power System Dynamic Frequency
Abstract: Although numerical simulation is an important method in researching dynamic frequency process,obvious deviations between the numerical simulation and the measured trajectory have been found based on the simulation reproduction in many accidents. And the existing simulation model and parameters cannot describe the actual dynamic process of frequency accurately. Researches are carried out on the influence of four parameters to the dynamic frequency process,which are based on the WSCC system. The four parameters include the inertia constant of generator,generator frequency coefficient,dead band and turbine intermediate superheating coefficient. Northeast China power grid and measured data are adopted to verify the above research conclusion. Checking the dynamic frequency process simulation model and parameters will improve the accuracy of dynamic frequency process simulation on the basis of the measured trajectory and the physical characteristics of the parameters. It can also give efficient foundation for the setting work of UFLS to overcome the previous conservative operation mode.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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