Rob Burchett, General Electric Company, Schenectady, New York.

Discipline:

Power flow modeling

Accession:

Summer 1984

This problem was brought to our attention by Mike Saunders. MINOS was used to solve this problem and the original ordering (P^4) in MINOS did not perform well on this problem because the initial basis is almost symmetric.

Matrices in this set:

GEMAT1 (real unsymmetric, 4929 by 10595, 47369 entries), Power flow in 2400 bus system in western US

GEMAT11 (real unsymmetric, 4929 by 4929, 33185 entries), Power flow in 2400 bus system in western US -- initial basis

GEMAT12 (real unsymmetric, 4929 by 4929, 33111 entries), Power flow in 2400 bus system in western US -- basis after 100 iterations