Thevenin Equivalent Method for Dynamic Contingency Assessment

Jakob Glarbo Møller; Hjörtur Jóhannsson; Jacob Østergaard

doi:10.1109/PESGM.2015.7286120

Thevenin Equivalent Method for Dynamic Contingency Assessment

Jakob Glarbo Møller, Hjörtur Jóhannsson, Jacob Østergaard

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Abstract

A method that exploits Thevenin equivalent representation for obtaining post-contingency steady-state nodal voltages is integrated with a method of detecting post-contingency aperiodic small-signal instability. The task of integrating stability assessment with contingency assessment is challenged by the cases of unstable post-contingency conditions. For unstable postcontingency conditions there exists no credible steady-state which can be used for basis of a stability assessment. This paper demonstrates how Thevenin Equivalent methods can be applied in algebraic representation of such bifurcation points which may be used in assessment of post-contingency aperiodic small-signal stability. The assessment method is introduced with a numeric example.

Original language	English
Title of host publication	Proceedings of IEEE Power & Energy Society's General Meeting 2015
Number of pages	5
Publisher	IEEE
Publication date	2015
ISBN (Print)	978-1-4673-8040-9
DOIs	https://doi.org/10.1109/PESGM.2015.7286120
Publication status	Published - 2015
Event	2015 IEEE PES General Meeting - Denver, CO, United States Duration: 26 Jul 2015 → 30 Jul 2015

Conference

Conference	2015 IEEE PES General Meeting
Country	United States
City	Denver, CO
Period	26/07/2015 → 30/07/2015

Keywords

Power system analysis computing
Power system stability
Thevenin equivalent
Algorithms

Access to Document

10.1109/PESGM.2015.7286120

PREPRINT thevenin equivalent method for dynamic contingency assessmentAccepted author manuscript, 159 KB

Projects

1 Finished

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.

01/01/2012 → 31/03/2016

Project: Research

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Cite this

Møller, J. G., Jóhannsson, H., & Østergaard, J. (2015). Thevenin Equivalent Method for Dynamic Contingency Assessment. In Proceedings of IEEE Power & Energy Society's General Meeting 2015 IEEE. https://doi.org/10.1109/PESGM.2015.7286120

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