Pole-zero assignment adaptive stabiliser

Abstract This paper presents a new adaptive power system stabiliser able to provide acceptable damping over a wide range of operating points. The control strategy is based on a new adaptive technique named Pole-Zero Assignment Controller (PZAC) in which a particular power system transfer function ( G d (s) = Δ δ /Δ P m ) is modified to a standard form based on an explicit system identification. Controller design is mainly based on continuous-time system because of using the delta operator rather than the more usual shift operator. Simulation studies performed on a multimachine model are presented. Results clearly show the benefits of the proposed adaptive controller for stability enhancement of a power system, especially where there are large changes in operating point.

[1]  Peter Wellstead,et al.  Pole assignment self-tuning regulator , 1979 .

[2]  Hadi Saadat,et al.  Power System Analysis , 1998 .

[3]  Amin Khodabakhshian,et al.  A New Identification Model for Power System Transfer Functions , 2003 .

[4]  Charles Concordia,et al.  Concepts of Synchronous Machine Stability as Affected by Excitation Control , 1969 .

[5]  Karl Johan Åström,et al.  Computer-Controlled Systems: Theory and Design , 1984 .

[6]  Rolf Isermann,et al.  Parameter adaptive control algorithms - A tutorial , 1982, Autom..

[7]  E. Larsen,et al.  IEEE Transactions on Power Apparatus and Systems, Vol. PAS-100, No. 6 June 1981 APPLYING POWER SYSTEM STABILIZERS PART I: GENERAL CONCEPTS , 2006 .

[8]  Om P. Malik,et al.  An Adaptive Synchronous Machine Stabilizer , 1986 .

[9]  G. Ledwich,et al.  Power System Stabilizer Based on Adaptive Control Techniques , 1984, IEEE Power Engineering Review.

[10]  G. S. Hope,et al.  Excitation Control of Synchronous Generators Using Adaptive Regulators, Part I: Theory and Simulation Results , 1984, IEEE Power Engineering Review.

[11]  Y. H. Ku,et al.  Electric Power System Dynamics , 1983 .

[12]  Amin Khodabakhshian,et al.  Discretization of power system transfer functions , 1994 .

[13]  R. J. Koessler.  Techniques for tuning excitation system parameters , 1988 .

[14]  D. A. Pierre,et al.  A Perspective on Adaptive Control of Power Systems , 1987, IEEE Transactions on Power Systems.

[15]  M. Blanke,et al.  Roll damping by rudder control-a new H/sub /spl infin// approach , 1994, 1994 Proceedings of IEEE International Conference on Control and Applications.

[16]  C. M. Lim.  A self-tuning stabiliser for excitation or governor control of power systems , 1989 .

[17]  K. E. Bollinger,et al.  A comparison of rotor damping from adaptive and conventional PSS in a multi-machine power system , 1990 .

[18]  Amin Khodabakhshian.  Pole-assignment adaptive stabiliser , 2003, Proceedings of 2003 IEEE Conference on Control Applications, 2003. CCA 2003..

[19]  J. Nanda,et al.  Application of optimal control strategy to automatic generation control of a hydrothermal system , 1988 .

[20]  K. E. Bollinger,et al.  A Self-Tuning Power System Stabilizer for Wide-Range Synchronous Generator Operation , 1989, IEEE Power Engineering Review.

[21]  F. P. de Mello,et al.  Practical Approaches to Supplementary Stabilizing from Accelerating Power , 1978, IEEE Transactions on Power Apparatus and Systems.