Computation of power systems eigenvalues using the modified nodal approach

This paper presents a new method of forming state-space equations of large power systems which allows to calculate their eigenvalues. The method does nor require any topological tools. It is based on the extended modified nod al approach, which was presented at the IPST '97 in Seattle. The extended m odified nodal approach generates a set of algebraic and state-space equatio ns using Kirchhoff's nodal law exclusively. Eliminating the algebraic part of these equations results in the desired state-space equations in an expli cit form.