MIXED REAL COMPLEX FACTORIZATION

This paper describes a mixed real/complex sparse matrix factorization and solution scheme applied to a large matrix problem. Large system ei genanalysis and frequency domain methods will directly benefit from th e proposed scheme, which can reduce both memory and CPU time requireme nts when compared to conventional complex-only solutions. The applicat ion in hand is the small signal electromechanical stability analysis o f large power systems. The savings obtained are significant considerin g the CPU intensive nature of these matrix problems.