685 BUS: Power systems admittance matrices
Power system networks

from set PSADMIT, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: 685_bus.mtx.gz (16245 bytes)
Compressed Harwell-Boeing format file: 685_bus.rsa.gz (14513 bytes)

Visualizations

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Structure Plot	City Plot
	3D Interactive City Plot
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Matrix Statistics

Size	Type
685 x 685, 1967 entries	real symmetric indefinite symmetric positive definite
Nonzeros
total diagonal below diagonal above diagonal A-A' 3249 685 1282 1282 0
Column Data	Row Data
Average nonzeros per column : 4.7 Standard deviation : 1.8 index nonzeros longest 317 13 shortest 5 2	Average nonzeros per row : 4.7 Standard deviation : 1.8 index nonzeros longest 317 13 shortest 5 2
Bandwidths	Profile Storage
lower 551 upper 551 average |i-j| 32 std.dev. 75	min max ave. std.dev. lower bandwidth 1 551 43 86 upper bandwidth 1 551 43 86 Symmetric skyline storage requirement:29306
Heaviest diagonals
offset from main 0 -1 1 -2 2 -3 3 -5 5 -4 nonzeros 685 209 209 97 97 60 60 47 47 42 accumulated percent 21.08 27.52 33.95 36.93 39.92 41.77 43.61 45.06 46.51 47.80 Top 10 out of 359 nonvoid diagonals.
Conditioning
Frobenius norm 4e+04 condition number (est.) 5.3e+05 2-norm (est.) 2.6e+04 diagonal dominance no

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