This letter extends the complex-variable perturbed Gauss-Newton method to estimate the state of unbalanced power systems by exploiting the Fortescue transformation.It proposes a novel and efficient graph-based way to ...This letter extends the complex-variable perturbed Gauss-Newton method to estimate the state of unbalanced power systems by exploiting the Fortescue transformation.It proposes a novel and efficient graph-based way to deal with singularities due to zero-sequence network parts bounded with delta transformer windings and isolated from the ground.The estimator can handle both phasor and complex power measurements.Compared with the standard complex-variable unbalanced state estimator,it achieves better numerical stability and a speed-up of around three times using a sequential implementation and five times using parallel execution.展开更多
基金supported by MONKS,Sarajevo,FBiH,Bosnia and Herzegovina(No.27-02-11-41250-34/21).
文摘This letter extends the complex-variable perturbed Gauss-Newton method to estimate the state of unbalanced power systems by exploiting the Fortescue transformation.It proposes a novel and efficient graph-based way to deal with singularities due to zero-sequence network parts bounded with delta transformer windings and isolated from the ground.The estimator can handle both phasor and complex power measurements.Compared with the standard complex-variable unbalanced state estimator,it achieves better numerical stability and a speed-up of around three times using a sequential implementation and five times using parallel execution.
