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One of the most recognized load flow methods at present is the N-R(Newton-Raphson) method 1 with the sparsity techniques and suboptimal ordering 2. This paper presents a new AC load flow method which is several to more than ten times faster than the N-R method and has the same memory requirement, mathematical complexity and accuracy as the N-R method. As an example, the convergence time for 118 bus system was only one eighth of the N-R method.
Iwamoto et al. (Fri,) studied this question.