An iterative method for solving complex-symmetric systems arising in electrical power modeling

摘要

We propose an iterative method for solving a complex-symmetric linear system arising in electric power networks. Our method extends Gremban, Miller, and Zagha's [ in Proceedings of the International Parallel Processing Symposium, IEEE Computer Society, Los Alamitos, CA, 1995] support-tree preconditioner to handle complex weights and vastly different admittances. Our underlying iteration is a modi. cation to transpose-free QMR [ 6] to enhance accuracy. Computational results are described.