Abstract
In order to study the effect on voltage stability by continuous changes of the wind power system parameters. Using the active power and reactive power and network admittance of the wind power system as the bifurcation parameters, single parameter Hopf bifurcation point and two parameters Hopf bifurcation boundary are calculated based on the continuation method by using the bifurcation theory with wind power system dynamic models, and the effect of parameters on Hopf bifurcation is studied, meanwhile the control role of static var compensator (SVC) on Hopf bifurcation is analyzed. The research results show that different parameter change causes different effect on Hopf bifurcation, furthermore SVC can delay Hopf bifurcation, increase wind power system voltage stability region.
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