Title :
Effect of shaft parameter uncertainty on subsynchronous resonance simulation
Author :
Xu Yanhui ; Song Ge
Author_Institution :
Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
Simple mass-spring model of fixed parameters is often used as the complex turbine-generator shaft model when simulating subsynchronous resonance, but which cannot describe the torsional vibration characteristics very well. For the generalization of simulation result, simple mass-spring model of uncertain parameters was used as the shaft model. Firstly, the sensitivity of shaft parameter on torsional vibration frequency was calculated for the example of IEEE first benchmark model and the effect of shaft parameter variation on simulating subsynchronous resonance was analyzed. Then, the relationship of shaft parameter uncertainty and torsional oscillation was simplified by probabilistic collocation method. The uncertainty of SSR was analyzed for normal distribution of shaft parameter.
Keywords :
shafts; subsynchronous resonance; torsion; turbogenerators; vibrations; IEEE first benchmark model; SSR; mass-spring model; probabilistic collocation method; shaft parameter uncertainty; subsynchronous resonance simulation; torsional oscillation; torsional vibration characteristics; turbine-generator shaft model; Analytical models; Generators; Phase change materials; Shafts; Torque; Uncertainty; Vibrations; Sensitivity; Shaft system; Simulation; Subsynchronous resonance; Uncertainty;
Conference_Titel :
Power Engineering and Automation Conference (PEAM), 2012 IEEE
Conference_Location :
Wuhan
Print_ISBN :
978-1-4577-1599-0
DOI :
10.1109/PEAM.2012.6612477