1138 BUS: Power systems admittance matrices
Power system networks

from set PSADMIT, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: 1138_bus.mtx.gz (21322 bytes)
Compressed Harwell-Boeing format file: 1138_bus.rsa.gz (19648 bytes)

Visualizations

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Structure Plot	City Plot
	3D Interactive City Plot
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Matrix Statistics

Size	Type
1138 x 1138, 2596 entries	real symmetric indefinite symmetric positive definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 4054 1138 1458 1458 0
Column Data	Row Data
Average nonzeros per column : 3.6 Standard deviation : 1.8 index nonzeros longest 241 18 shortest 12 2	Average nonzeros per row : 3.6 Standard deviation : 1.8 index nonzeros longest 241 18 shortest 12 2
Bandwidths	Profile Storage
lower 1031 upper 1031 average |i-j| 60 std.dev. 1.4e+02	min max ave. std.dev. lower bandwidth 1 1031 82 1.7e+02 upper bandwidth 1 1031 82 1.7e+02 Symmetric skyline storage requirement:92755
Heaviest diagonals
offset from main 0 -1 1 -2 2 -3 3 -4 4 -10 nonzeros 1138 265 265 87 87 64 64 54 54 42 accumulated percent 28.07 34.61 41.14 43.29 45.44 47.02 48.59 49.93 51.26 52.29 Top 10 out of 625 nonvoid diagonals.
Conditioning
Frobenius norm 1.3e+05 condition number (est.) 1e+02 2-norm (est.) 3e+04 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:49 US/Eastern 2004 [Comments: ]