Title :
A Numerical Method for Finding Spanning Trees in Power System State Estimation
Author :
Almeida, Madson C. ; Asada, Eduardo N. ; Garcia, Ariovaldo V.
Author_Institution :
Dept. of Power Syst. - FEEC, Campinas Univ., Campinas
Abstract :
This paper presents a simple and robust numerical method to find non-redundant sets of measurements that form spanning trees. This can be useful to the observability analysis of power system state estimation. The proposed method is based on the triangular factorization of the Gram matrix constructed considering the rows of the measurement Jacobian matrix as vectors. The method is robust and suitable to be used in realtime applications. Numerical examples to show the performance of the method are presented.
Keywords :
Jacobian matrices; matrix decomposition; numerical analysis; observability; power system state estimation; trees (mathematics); Gram matrix; Jacobian matrix; observability analysis; power system state estimation; robust numerical method; spanning trees; triangular factorization; Covariance matrix; Fluid flow measurement; Jacobian matrices; Observability; Power measurement; Power system analysis computing; Power system measurements; Power systems; State estimation; Tree graphs;
Conference_Titel :
Power System Technology, 2006. PowerCon 2006. International Conference on
Conference_Location :
Chongqing
Print_ISBN :
1-4244-0110-0
Electronic_ISBN :
1-4244-0111-9
DOI :
10.1109/ICPST.2006.321731
