Title :
A mixed pivoting approach to the factorization of indefinite matrices in power system state estimation
Author :
Machado, P.A. ; Azevedo, G.P. ; Monticelli, A.J.
Author_Institution :
CEPEL, Rio de Janeiro, Brazil
fDate :
5/1/1991 12:00:00 AM
Abstract :
A robust and efficient sparsity oriented approach to the factorization of indefinite matrices that appear in connection with a variety of power system state estimation formulations is presented. Particularly, the problem of representing zero injections as equality constraints in the normal equation formulation is discussed and analyzed. A new ordering scheme for mixed 1×1, 2×2 pivoting is proposed and tested. Tests on two real life systems (41 buses and 1331 buses) are reported and discussed
Keywords :
matrix algebra; power systems; state estimation; indefinite matrices; mixed pivoting approach; power system state estimation; real life systems; Fluid flow measurement; Jacobian matrices; Noise measurement; Nonlinear equations; Power system analysis computing; Power systems; Robustness; Sparse matrices; State estimation; Testing;
Journal_Title :
Power Systems, IEEE Transactions on
