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Table 3 Numerical properties of the coefficient matrix

From: An efficient method to include equality constraints in branch current distribution system state estimation

Method Coefficient matrix Coefficient matrix Condition
  density (%) size number
VM a 3.26 454 × 454 3.02 · 106
LM 1.48 692 × 692 4.63 · 104
SVR 21.17 216 × 216 1.02 · 104
  1. aWeight used for the virtual measurements = 1010.