Investigation of induction Machine contribution to power system oscillations

Incorporation of load dynamics in stability studies is necessary nowadays, especially due to the increased use of induction machines in both consumption and generation. This paper investigates power system small-signal stability, considering induction machines as dynamic elements. Linear coefficients are proposed that are convenient for both quantitative and qualitative single machine-infinite bus studies. These coefficients are expanded into matrices in the case of multimachine systems, where the off-diagonal elements represent the interaction between machines. Modal interaction between induction machines, as well as between induction and synchronous machines, is investigated. It is shown that a large proportion of induction machines in a realistic power system significantly affects the interarea electromechanical mode and, consequently, the power system stabilizer design.

[1]  J. Feltes,et al.  Application of Induction Generators in Power Systems , 1982, IEEE Transactions on Power Apparatus and Systems.

[2]  R. Cavin,et al.  Transient Load Model of an Induction Motor , 1973 .

[3]  B. M. Nomikos,et al.  Evaluation of motor effects on the electromechanical oscillations of multimachine systems , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[4]  Costas Vournas,et al.  AGGREGATION OF WIND FARMS IN DISTRIBUTION NETWORKS , 2003 .

[5]  B. M. Nomikos,et al.  Modal interaction and PSS design , 2001, 2001 IEEE Porto Power Tech Proceedings (Cat. No.01EX502).

[6]  C. D. Vournas,et al.  Voltage stability as affected by static load characteristics , 1993 .

[7]  D. R. Ostojic,et al.  Stabilization of multimodal electromechanical oscillations by coordinated application of power system stabilizers , 1991 .

[8]  G. Drobnjak,et al.  Dynamics of a large induction motor load system , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[9]  G. J. Rogers,et al.  Analytical investigation of factors influencing power system stabilizers performance , 1992 .

[10]  Peter W. Sauer,et al.  Is strong modal resonance a precursor to power system oscillations , 2001 .

[11]  Jovica V. Milanovic,et al.  Effects of load dynamics on power system damping , 1995 .

[12]  F. P. de Mello,et al.  Voltage oscillatory instability caused by induction motor loads , 1996 .

[13]  S. Ahmed-Zaid,et al.  Structural modeling of small and large induction machines using integral manifolds , 1991 .

[14]  D. Kosterev,et al.  An Interim Dynamic Induction Motor Model for Stability Studies in the WSCC , 2002, IEEE Power Engineering Review.

[15]  Thierry Van Cutsem,et al.  Voltage Stability of Electric Power Systems , 1998 .

[16]  Hans Knudsen,et al.  An aggregate model of a grid-connected, large-scale, offshore wind farm for power stability investigations—importance of windmill mechanical system , 2002 .

[17]  B. C. Papadias,et al.  Power System Stabilization via Parameter Optimization - Application to the Hellenic Interconnected System , 1987, IEEE Transactions on Power Systems.

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

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

[20]  D. W. Novotny,et al.  A Simplified Approach to the Determination of Induction Machine Dynamic Response , 1978, IEEE Transactions on Power Apparatus and Systems.

[21]  C. Portela,et al.  Computing small-signal stability boundaries for large-scale power systems , 2002 .