Article

Bifurcation Analysis on a Multimachine Power System Model

Dept. de Ing. Electr. y de Computadoras, Univ. Nac. del Sur, Bahia Blanca, Argentina
Circuits and Systems I: Regular Papers, IEEE Transactions on (impact factor: 1.97). 05/2010; DOI:10.1109/TCSI.2009.2026686 pp.937 - 949
Source: IEEE Xplore

ABSTRACT In this article bifurcation analysis of the 9 bus power system model corresponding to the Western Systems Coordinating Council is performed. In order to use standard continuation packages like MATCONT, a full ordinary differential equations model, including the corresponding dynamics of the control loops and the transmission lines, is derived. Different loading conditions are studied by using the load demands as bifurcation parameters. For variations of one of the loads, it is shown that the equilibrium point undergoes Hopf and saddle-node bifurcations. Furthermore, the bifurcation analysis varying two loads simultaneously reveals the existence of a pair of double Hopf and a zero-Hopf bifurcations, acting as organizing centers of the dynamics. Finally, a power system stabilizer has been added in order to modify the location of a Hopf bifurcation curve.

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Keywords

9 bus power system model corresponding
 
article bifurcation analysis
 
bifurcation analysis varying
 
centers
 
control loops
 
Different loading conditions
 
equilibrium point undergoes Hopf
 
full ordinary differential equations model
 
Hopf bifurcation curve
 
use standard continuation packages
 
Western Systems Coordinating Council
 

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