Placement of FACTS controllers using modal controllability indices to damp out power system oscillations

Flexible ac transmission systems (FACTS) controllers are being used to damp out the power system oscillations. The effectiveness of these controllers depends on their optimal location in the power system network. A controllability index has been proposed to find the optimal location of the FACTS controllers to damp out the inter-area mode of oscillations. Three types of FACTS controllers have been considered, which include static var compensator, thyristor-controlled series compensator and unified power flow controller. The proposed controllability index is based on the relative participation of the parameters of FACTS controllers to the critical mode. A simple approach of computing the controllability indices has been proposed, which combines the linearised differential algebraic equation model of the power system and the FACTS output equations. The placements of FACTS controllers have been obtained for the base case as well as for the critical contingency cases. The effectiveness of the proposed method is demonstrated on New England 39-bus system and 16-machine, 68-bus system.

[1]  S. C. Srivastava,et al.  Optimal reactive power dispatch considering FACTS devices , 1997 .

[2]  Pouyan Pourbeik,et al.  Simultaneous coordination of power system stabilizers and FACTS device stabilizers in a multimachine power system for enhancing dynamic performance , 1998 .

[3]  Akihiko Yokoyama,et al.  Stabilizing control of variable impedance power systems: Applications to variable series capacitor systems , 1993 .

[4]  P. Kundur,et al.  Power system stability and control , 1994 .

[5]  N. Martins,et al.  Determination of suitable locations for power system stabilizers and static VAr compensators for damping electromechanical oscillations in large scale power systems , 1989, Conference Papers Power Industry Computer Application Conference.

[6]  K.Y. Lee,et al.  Choice of FACTS device control inputs for damping interarea oscillations , 2004, IEEE Transactions on Power Systems.

[7]  Peter W. Sauer,et al.  Power System Dynamics and Stability , 1997 .

[8]  Graham Rogers,et al.  Power System Oscillations , 1999 .

[9]  B. Chaudhuri,et al.  Robust damping of multiple swing modes employing global stabilizing signals with a TCSC , 2004, IEEE Transactions on Power Systems.

[10]  Seema Singh,et al.  Optimal location of FACTS devices for congestion management , 2001 .

[11]  Udaya Annakkage,et al.  Output feedback TCSC controllers to improve damping of meshed multi-machine power systems , 1997 .

[12]  Hiroshi Okamoto,et al.  A method for identification of effective locations of variable impedance apparatus on enhancement of steady-state stability in large scale power systems , 1995 .

[13]  Yixin Ni,et al.  Incorporating UPFC model into the power system toolbox of the MATLAB for transient stability study , 1998, Proceedings of IEEE TENCON '98. IEEE Region 10 International Conference on Global Connectivity in Energy, Computer, Communication and Control (Cat. No.98CH36229).

[14]  Joe H. Chow,et al.  Concepts for design of FACTS controllers to damp power swings , 1995 .

[15]  Y. H. Song,et al.  Available transfer capability enhancement using FACTS devices , 2003 .

[16]  K. M. Son,et al.  On the robust LQG control of TCSC for damping power system oscillations , 2000 .

[17]  S. Gerbex,et al.  Optimal Location of Multi-Type FACTS Devices in a Power System by Means of Genetic Algorithms , 2001, IEEE Power Engineering Review.

[18]  G. T. Heydt,et al.  Power Quality Engineering , 2001, IEEE Power Engineering Review.