CUI Yahui, ZHANG Junjie, ZHAO Zongbin, et al. Subsynchronous oscillation torsional vibration model and simulation for a supercritical 600MW unit with high voltage direct current transmission[J]. Thermal power generation, 2016, 45(6): 106-110.
CUI Yahui, ZHANG Junjie, ZHAO Zongbin, et al. Subsynchronous oscillation torsional vibration model and simulation for a supercritical 600MW unit with high voltage direct current transmission[J]. Thermal power generation, 2016, 45(6): 106-110.DOI:
Subsynchronous oscillation(SSO)problem caused by remote transmission and extra high voltage transmission is increasingly outstanding.To deeply investigate the safety problem of unit shaft system under SSO condition
according to the frequent low-amplitude subsynchronous oscillation problem in a supercritical 600 MW unit
the torsional vibration model under the coupling effect of power network
generator and unit was established
comprehensively considering the interactions between power network
generator shafting and turbine shafting.Moreover
by time-domain simulation method
the above torsional vibration model was applied to simulate the SSO phenomenon occurred in this unit
and the torque the shafting bearing during the SSO process was obtained.The proposed model provides calculation basis for analyzing torsional vibration safety of supercritical 600 MW units when subsynchronous oscillation occurred.