Ingeniare. Revista chilena de ingeniería, vol. 16 No 1, 2008, pp. 257-263 ARTÍCULOS INFLUENCIA DE LA TOPOLOGIA EN EL CONDICIONAMIENTO DE MATRICES DE REDES ELÉCTRICAS TOPOLOGIC INFLUENCE ON THE CONDITIONING OF MATRICES OF ELECTRIC NETWORKS Miguel Arias Albornoz1 Abnery Ortiz Riquelme1 Marcelo Aedo Ruz1 1 Departamento de Ingeniería Eléctrica. Universidad de Santiago de Chile. Avenida Ecuador 3519. Casilla 10233. Santiago, Chile. E-mail:m-arias@usach.cl RESUMEN Se estudia la influencia de la topología de redes eléctricas y alimentadores en el condicionamiento de las matrices asociadas a su modelado matemático. Se observa que el número de condición de estas matrices tiene una gran dependencia de la estructura de la red y que es afectado por el grado de enmallamiento de la red. Se incluyen resultados de simulaciones computacionales de distintos casos que permiten establecer una relación de consecuencia. Palabras clave: Matrices de redes, condicionamiento numérico, estabilidad numérica. ABSTRACT The influence of the topology of electric networks and feeders on the condition number of the matrix associated to its mathematical model is studied. It is noted that the condition number of these matrices has a great dependence on the structure of the network and that it is affected by the network degree. Computer simulation results of different cases are included, which show the achievement of a relation of consequence. Keywords: Network matrices, condition number, numerical stability. REFERENCIAS [1] J.W. Gu, K.A. Clements, G.R. Krumpholz and P.W. Davis. "The solution of ill-conditioned power system state estimation problems via the method of Peters and Wilkinson". IEEE Transaction on PAS. Vol. PAS-102 Nº 10, pp. 3473-3480. October 1983. [ Links ] [2] M. Arias and V. Quintana. "Equivalent network approach for the analysis of the gain matrix". Proceedings North American Power Symposium, pp. 371-375. Manhattan Kansas. USA. September 1994. [ Links ] [3] J. Wang, X. Yu, N. K. Loh, Z. Qin and W. C. Miller. "Solving linear algebraic equations without error". IEEE Signal. Processing Letters. Vol. 1 Nº 3. March [ Links ]1994. [4] H. Joong, K. Choi, H.B. Lee and Y. Hahn. "A new algorithm for solving ill-conditioned linear systems". IEEE Transactions on Magnetics. Vol. 32 Nº 3. May [ Links ]1996. [5] B. Gou and A. Abur. "A direct numerical method for observability analysis". IEEE Transactions on Power Systems. Vol. 15 Nº 2, pp. 625-630. May [ Links ]2000. [6] R. Ebrahimian and R. Baldick. "State estimator condition number analysis". IEEE Transaction on Power Systems. Vol. 16 Nº 2, pp. 273-279. May [ Links ]2001. [7] I. Rivals and L. Personnaz. "Jacobian conditioning analysis for model validation". Neural Computation. Vol. 16 Nº 2, pp. 401-418. February [ Links ]2004. [8] C. Rakpenthai, S. Premrudeepreechacham, S. Uatrongjit and N.R. Watson. "Measurement placement for power system state estimation using decomposition technique". Electric Power Systems Research Vol. 75 Nº 1, pp. 41-49. July [ Links ]2005. [9] G. Acosta, M. Grana and J.P. Pinasco. "Condition number and scale free graphs". European Phisical Journal B. Vol. 53 Nº 3, pp. 381-385. October [ Links ]2006. Recibido el 21 de marzo de 2006, aceptado el 26 de noviembre de 2007 |