A new method for finding low-voltage power flow solutions

Raymond P. Klump, Thomas J. Overbye

Research output: Contribution to conferencePaperpeer-review

Abstract

Some techniques for analyzing power system voltage stability use alternative power flow solutions to compute their measure. These alternative solutions usually exhibit low bus voltage magnitudes at a subset of the system's nodes. For this reason, they are sometimes referred to as "low-voltage" power flow solutions. The fractal convergence regions exhibited by the Newton-Raphson power flow makes finding low-voltage solutions difficult, because it complicates the task of identifying an initial voltage guess that leads to the desired solutions. This paper derives a new approach for finding low-voltage power flow solutions directly from the structure of the Newton-Raphson power flow equations in rectangular coordinates. It compares the speed and frequency of convergence of the new technique with a previously proposed method to demonstrate its effectiveness in finding low-voltage solutions.

Original languageEnglish (US)
Pages593-597
Number of pages5
StatePublished - Dec 1 2000
EventProceedings of the 2000 Power Engineering Society Summer Meeting - Seattle, WA, United States
Duration: Jul 16 2000Jul 20 2000

Other

OtherProceedings of the 2000 Power Engineering Society Summer Meeting
CountryUnited States
CitySeattle, WA
Period7/16/007/20/00

Keywords

  • Low-voltage power flow solutions
  • Newton's method
  • Power flow
  • Power systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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