transient optimal power flow, Reduced-Space. Guangchao Geng, Zhejiang Univ
Name TSOPF_RS_b2383
Matrix ID 2219
Num Rows 38,120
Num Cols 38,120
Nonzeros 16,171,169
Pattern Entries 16,171,169
Kind Power Network Problem
Symmetric No
Date 2009
Author G. Geng
Editor T. Davis
Structural Rank 38,120
Structural Rank Full true
Num Dmperm Blocks 378
Strongly Connect Components 378
Num Explicit Zeros 0
Pattern Symmetry 0.2%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type real
SVD Statistics
Matrix Norm 2.134755e+04
Minimum Singular Value 9.691201e-05
Condition Number 2.202776e+08
Rank 38,120
sprank(A)-rank(A) 0
Null Space Dimension 0
Full Numerical Rank? yes
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Transient stability-constrained optimal power flow (TSOPF) problems from     
Guangchao Geng, Institute of Power System, College of Electrical Engineering,
Zhejiang University, Hangzhou, 310027, China.  (genggc AT gmail DOT com).    
Matrices in the  Full-Space (FS) group are symmetric indefinite, and are best
solved with MA57.  Matrices in the the Reduced-Space (RS) group are best     
solved with KLU, which for these matrices can be 10 times faster than UMFPACK
or SuperLU.