抄録
This paper presents a class of new variants of an exact decoupled load flow approach in rectangular coordinates, which are capable of achieving the quadratic convergence behavior similar to that of the standard Newton-Raphson (NR) load flow. The proposed variants employ no assumptions in their derivation and use Maclaurin series to preserve fully the effects of the decoupling as well as other variations in the Jacobian during the iterative process. To make the proposed variants convergent to a wide range of load flow problems, the modifications based on the convergence condition of the Maclaurin series are employed in such a way as to cause no changes in the sparsity structure of Jacobian matrix and with minimal additional computation burden. The convergence performance of the proposed variants is studied by performing load flow simulations on a work station for various standard IEEE test systems and in general, is confirmed to follow closely the quadratic convergence of the standard NR method.
