Using the bifurcation theory to select pilot busbars in a secondary voltage regulation shceme

This paper presents and discusses a methodology to select pilot busbars in a secondary voltage regulation scheme. The proposed procedure is a nonlinear approach based on the bifurcation theory applied to the DAE representation of power systems. Since the bifurcation theory is applied to the whole set of the differential-algebraic equations it can deal with a realistic way to compute the equilibrium points, based on constant set-points for controllers like as automatic voltage regulators. Numerical results are presented for the New England test system, demonstrating the potentiality of the proposed methodology