A supplementary neural controller for novel modeling of VSC HVDC to enhance dynamic stability in a power system

This paper presents the establishment of a novel linearized Phillips-Heffron model of a power system installed HVAC parallel-connected with a High Voltage Direct Current based voltage source converter (VSC HVDC). The use of the supplementary controllers of a VSC HVDC to damp low frequency oscillations in a weakly connected system is proposed. The potential of VSC HVDC supplementary controllers to enhance the dynamic stability is evaluated by measuring the electromechanical controllability through the singular value decomposition (SVD) analysis. The supplementary controller is designed based on system state space equations to obtain controlling signal. In this paper a proposed neural controller is used to product a supplementary controlling signal for stabilizing and oscillation damping to overcome the drawbacks of conventional lead-lag controllers.

[1]  Wenxin Liu,et al.  Design of an adaptive neural network based power system stabilizer , 2003, Neural Networks.

[2]  J. O. Gjerde,et al.  Use of HVDC and FACTS-components for enhancement of power system stability , 1996, Proceedings of 8th Mediterranean Electrotechnical Conference on Industrial Applications in Power Systems, Computer Science and Telecommunications (MELECON 96).

[3]  M. A. Abido,et al.  A particle-swarm-based approach of power system stability enhancement with unified power flow controller , 2007 .

[4]  Om P. Malik,et al.  Application of neural adaptive power system stabilizer in a multi-machine power system , 1999 .

[5]  G.A. Huang,et al.  HVDC controls for power system stability , 2002, IEEE Power Engineering Society Summer Meeting,.

[6]  A. Shoulaie,et al.  Low frequency oscillation analysis in parallel AC/DC system by a novel dynamic model , 2004, 2004 International Conference on Power System Technology, 2004. PowerCon 2004..

[7]  A. Hamdan,et al.  An investigation of the significance of singular value decomposition in power system dynamics , 1999 .

[8]  S. Corsi,et al.  Emergency-stability controls through HVDC links , 2002, IEEE Power Engineering Society Summer Meeting,.

[9]  M. A. Abido,et al.  Robust tuning of power system stabilizers in multimachine power systems , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).

[10]  James D. McCalley,et al.  TCSC controller design for damping interarea oscillations , 1998 .

[11]  Om P. Malik,et al.  Real-time implementation and experimental studies of a neural adaptive power system stabilizer , 1999 .

[12]  P. Shamsollahi,et al.  Direct neural adaptive control applied to synchronous generator , 1997, 1997 IEEE International Electric Machines and Drives Conference Record.

[13]  M. Villablanca,et al.  A modified back-to-back HVDC system for 36-pulse operation , 2000 .

[14]  C. W. Taylor,et al.  HVDC controls for system dynamic performance , 1991 .

[15]  M. Baker,et al.  Frequency and system damping assistance from HVDC and FACTS controllers , 2002, IEEE Power Engineering Society Summer Meeting,.

[16]  E. Uzunovic,et al.  EMTP Studies of UPFC Power Oscillation Damping , 1999 .

[17]  H. F. Wang,et al.  A unified model for the analysis of FACTS devices in damping power system oscillations. I. Single-machine infinite-bus power systems , 1997 .