Title :
An optimal control strategy to alleviate sub-synchronous resonance in VSC-HVDC systems
Author :
Chehardeh, M. Isapour ; Lesani, H. ; Zadeh, M. Karbalaye ; Siavashi, E.M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Tehran, Tehran, Iran
Abstract :
The VSC-HVDC can enhance the performance of power systems and plays a major role in the dynamic stability of power systems. In addition VSC-HVDC controller can be utilized to mitigate torsional torque and prevent sub-synchronous resonance (SSR) effectively. In this paper a controller has been designed for VSC-HVDC to suppress sub-synchronous oscillations. The Control methodology that is employed as sub-synchronous damping controller is based on implemented direct power control (DPC). Reducing SSR and increasing dynamic stability of power system including VSC-HVDC are discussed through simulations. Digital simulation has been carried out via MATLAB software to analyze torsional torque of turbine generator shaft and rotor speed in the case system which consists of VSC-HVDC and series compensated line.
Keywords :
HVDC power convertors; HVDC power transmission; damping; optimal control; power system control; power system stability; shafts; synchronisation; torque; turbines; vibration control; VSC-HVDC systems; alleviate sub-synchronous resonance; optimal control strategy; power system dynamic stability; synchronous damping controller; torsional torque; turbine generator shaft; Damping; Digital simulation; Optimal control; Power control; Power system analysis computing; Power system dynamics; Power system simulation; Power system stability; Resonance; Torque control; Direct power control (DPC); Sub-synchronous resonance; Torsional torque; VSC-HVDC; power system;
Conference_Titel :
Power Electronics and Intelligent Transportation System (PEITS), 2009 2nd International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-4544-8
DOI :
10.1109/PEITS.2009.5407025
