邵帅,李铭,蔡宏飞,刘柏林,徐兴伟,郭长亮.基于实测轨迹校正模型参数对电力系统频率动态过程仿真精度的影响[J].电测与仪表,2014,51(19):. Shao Shuai,Li Ming,CAI Hong-fei,Liu Bai-lin,Xu Xing-wei,GUO Chang-liang.The Influence of Measured Trajectory Based Model Parameters Correcting on Simulation Precision of Power System Dynamic Frequency[J].Electrical Measurement & Instrumentation,2014,51(19):.
基于实测轨迹校正模型参数对电力系统频率动态过程仿真精度的影响
The Influence of Measured Trajectory Based Model Parameters Correcting on Simulation Precision of Power System Dynamic Frequency
Although numerical simulation is an important method of researching dynamic frequency process, obvious deviations have been found between numerical simulation and the measured trajectory in many accidents. And the existing simulation model and parameters cannot describe the actual dynamic process of frequency accurately. Research was carried out on the influence of four parameters to the dynamic frequency process, which 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 used to verify the above research conclusion. Checking the dynamic frequency process simulation model and parameters can improve the accuracy of dynamic frequency process simulation on the base of the measured trajectory and the physical characteristics of the parameters. It can also give efficient foundation for the setting work of UFLS, overcoming the previous conservative operation mode and so on.
