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

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10.1109/PESGM.2015.7286120

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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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title = "Thevenin Equivalent Method for Dynamic Contingency Assessment",

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.",

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T1 - Thevenin Equivalent Method for Dynamic Contingency Assessment

AU - Møller, Jakob Glarbo

AU - Jóhannsson, Hjörtur

AU - Østergaard, Jacob

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - Power system analysis computing

KW - Power system stability

KW - Thevenin equivalent

KW - Algorithms

U2 - 10.1109/PESGM.2015.7286120

DO - 10.1109/PESGM.2015.7286120

M3 - Article in proceedings

SN - 978-1-4673-8040-9

BT - Proceedings of IEEE Power & Energy Society's General Meeting 2015

PB - IEEE

T2 - 2015 IEEE PES General Meeting

Y2 - 26 July 2015 through 30 July 2015

ER -

Thevenin Equivalent Method for Dynamic Contingency Assessment

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Keywords

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