A Fast Load Flow Method Retaining Nonlinearity

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.