A robust and efficient power series method for tracing PV curves

Conference Paper

Estimating the voltage collapse point of a power grid is an important problem in power flow analysis. In this paper, we propose a novel power series method (PSM) for tracing the power-voltage (PV) curve and estimating the collapse point. By expanding the power flow equation into power series, a new point on the PV curve can be accurately extrapolated based on a previously solved point. Both forward stepping and backward stepping are proposed so that the proposed PSM can trace both the upper and lower halves of the PV curve. The collapse point is estimated as the intersection of the two half curves. Compared with the conventional continuation method, our PSM is numerically more robust. Compared with the conventional embedding method, our PSM offers superior accuracy and low computational cost.

Full Text

Duke Authors

Cited Authors

  • Chen, X; Bromberg, D; Li, X; Pileggi, L; Hug, G

Published Date

  • November 20, 2015

Published In

  • 2015 North American Power Symposium, Naps 2015

International Standard Book Number 13 (ISBN-13)

  • 9781467373890

Digital Object Identifier (DOI)

  • 10.1109/NAPS.2015.7335124

Citation Source

  • Scopus