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Newton-like method for line outage simulation

Lo, K.L. and Meng, Z. (2004) Newton-like method for line outage simulation. IEE Proceedings Generation Transmission and Distribution, 151 (2). pp. 225-231. ISSN 1350-2360

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Abstract

Line outage simulation is a necessary part of contingency analysis. The Newton-based full AC load flow method is commonly used for this purpose despite its time consuming computational process. A compensation scheme and a partial refactorisation method is proposed for the efficient solution of the first iteration of the post-contingency full AC load flow. Two Newton-like load-flow methods, the Fixed Newton method and the modification of the right-handside vector method, are also described to continue the calculation until convergence is obtained. These methods eliminate the need for complete refactorisation of the jacobian matrix. The two methods are compared with the Newton-based full AC load flow method and the fast decoupled load flow in three test systems to demonstrate their convergence characteristics.