Discussion on some voltage collapse indices

This paper discusses some voltage collapse indices with the help of bifurca tion theory. Two main topics are presented: first, the identification of a well-behaved eigenvalue as a function of load increase; second a theoretica l interpretation of the results. For this purpose, the center manifold theo rem is employed. The tests are carried out using the IEEE-300 Bus test syst em. The results show that under certain considerations, the voltage collaps e indices analyzed produce identical results. (C) 2000 Elsevier Science S.A . All rights reserved.