Improved method for considering PMU’s uncertainty and its effect on real-time stability assessment methods based on Thevenin equivalent

Angel Perez, Hjörtur Jóhannsson, Jacob Østergaard, Kenneth Martin

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This article characterizes experimentally the relation between phase and magnitude error from Phasor Measurement Units (PMU) in steady state and study its effect on real-time stability assessment methods. This is achieved by a set of laboratory tests applied to four different devices, where a bivariate Gaussian mixture distribution was used to represent the error, obtained experimentally, and later include it in the synthesized PMU measurement using the Monte Carlo Method. Two models for including uncertainty are compared and the results show that taking into account the correlation between magnitude and phase error reduces significantly the uncertainty in the calculated voltage stability indexes for all the study cases.
Original languageEnglish
Title of host publicationProceedings of PowerTech Eindhoven 2015
Number of pages5
Publication date2015
Publication statusPublished - 2015
EventPowerTech Eindhoven 2015 - Eindhoven, Netherlands
Duration: 29 Jun 20152 Jul 2015


ConferencePowerTech Eindhoven 2015


  • Voltage stability
  • Long term dynamics
  • Synchronized phasor measurements
  • Wide area monitoring
  • Voltage stability margin
  • Total vector error


SOSPO: Secure Operation of Sustainable Power Systems

Østergaard, J., Jóhannsson, H., Nielsen, A. H., Garcia-Valle, R., Yang, G., Lind, M., Blanke, M., Weckesser, J. T. G., Wittrock, M. L., Møller, J. G., Perez, A., Pedersen, A. S. & Zhang, X.


Project: Research


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