A Practical Approach to HVDC System Control for Damping Subsynchronous Oscillation Using the Novel Eigenvalue Analysis Program

• Published in: IEEE transactions on power systems Vol. 22; no. 4; pp. 1926 - 1934
• Main Authors: Kim, Dong-Joon, Nam, Hae-Kon, Moon, Young-Hwan
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.11.2007; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Control systems; Damping; Damping controller; Design engineering; Design methodology; Direct current; Dynamical systems; Dynamics; eigenvalue analysis; Eigenvalues; Eigenvalues and eigenfunctions; high voltage direct current (HVDC) system; HVDC transmission; Modeling; Oscillations; Shafts; Steady-state; subsynchronous oscillation; time domain simulation; Torque control; Voltage control
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/TPWRS.2007.907974

This paper presents a practical approach for supplementary control of high voltage direct current (HVDC) system to damp subsynchronous oscillation (SSO) involving HVDC converters and turbine-generator shaft systems. A novel eigenvalue analysis (NEA) program, HVDC system modeling to consider steady-state and dynamic conditions in a combined ac/dc system, and an appropriate control scheme have been utilized. The design method proposed facilitates the design of a subsynchronous oscillation damping controller (SODC) to provide positive damping torque for the dominant torsional mode in combined ac/dc systems. The suggested SODC design method has been applied to an ac/dc system to verify its practicality using the EMTDC simulation program.