Damping Subsynchronous Resonance Oscillations Using a VSC HVDC Back-to-Back System
This thesis reports the use of a supplementary controller along with the Voltage Source Converter (VSC) HVDC back-to-back active power controller to damp all SSR torsional oscillations. In this context, investigations are conducted on a typical HVAC/DC system incorporating a large turbine-generator and a VSC HVDC back-to-back system. The generator speed deviation is used as the stabilizing signal for the supplementary controller.
The results of the investigations conducted in this thesis show that the achieved control design is effective in damping all the shaft torsional torques over a wide range of compensation levels. The results and discussion presented in this thesis should provide valuable information to electric power utilities engaged in planning and operating series capacitor compensated transmission lines and VSC HVDC back-to-back systems.
Advisor:Kasap, Safa O.; Karki, Rajesh; Faried, Sherif O.; Chowdhury, Nurul A.; Burton, Richard T.
School:University of Saskatchewan
School Location:Canada - Saskatchewan
Source Type:Master's Thesis
Keywords:vsc hvdc back to system subsynchronous resonance facts
Date of Publication:07/06/2006