Analysis of active power control of HVDC in damping power oscillations

摘要

The ability of High-Voltage-DC(HVDC) system to improve the system dynamics and stability by modulation of active power flow through the HVDC terminals is presented. This method is used to damp oscillations in large systems. A two-machine system is used for analysis. For simulation purpose an HVDC transmission system is designed based on Rihand-Dadri 500kV HVDC project, India. Stability analysis is carried out by monitoring the rotor speed deviation of the machine. Variation of system dynamics is studied by varying the modulation and system parameters. Simulation result under each case has been obtained in MATLAB.