On computing power system steady-state stability using synchrophasor data

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In electric power systems, a key challenge is to quickly and accurately estimate how close the system is to its stability limits. This paper investigates using synchrophasor measurements at two buses connected by a transmission line to calculate parameters for a pair of Thevenin equivalent sources, which when connected by the transmission line model provide an equivalent power system representation. As seen from the transmission line, the angle difference between the two Thevenin equivalent sources is termed the "angle across the system" for that transmission line. In the case of a lossless transmission line with voltage support on both ends, the "angle across the system" (as seen from the line) is the difference between the transmission line bus voltage phase angles; to ensure steady-state stability under these conditions, it is well known that this angle difference must be less than 90 degrees. This paper extends these ideas and proposes the notion of the "angle across the system" described above as a gauge for assessing the system's proximity to its stability limit.

Original languageEnglish (US)
Title of host publicationProceedings of the 46th Annual Hawaii International Conference on System Sciences, HICSS 2013
Pages2312-2318
Number of pages7
DOIs
StatePublished - Apr 3 2013
Event46th Annual Hawaii International Conference on System Sciences, HICSS 2013 - Wailea, Maui, HI, United States
Duration: Jan 7 2013Jan 10 2013

Publication series

NameProceedings of the Annual Hawaii International Conference on System Sciences
ISSN (Print)1530-1605

Other

Other46th Annual Hawaii International Conference on System Sciences, HICSS 2013
CountryUnited States
CityWailea, Maui, HI
Period1/7/131/10/13

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Reinhard, K. E., Sauer, P. W., & Domínguez-García, A. D. (2013). On computing power system steady-state stability using synchrophasor data. In Proceedings of the 46th Annual Hawaii International Conference on System Sciences, HICSS 2013 (pp. 2312-2318). [6480123] (Proceedings of the Annual Hawaii International Conference on System Sciences). https://doi.org/10.1109/HICSS.2013.422