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 Power & Energy Society General Meeting - Denver, United States Duration: 26 Jul 2015 → 30 Jul 2015 https://ieeexplore.ieee.org/xpl/conhome/7271236/proceeding

Conference

Conference	2015 IEEE Power & Energy Society General Meeting
Country/Territory	United States
City	Denver
Period	26/07/2015 → 30/07/2015
Internet address	https://ieeexplore.ieee.org/xpl/conhome/7271236/proceeding

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. (Project Manager), Jóhannsson, H. (Project Manager), Nielsen, A. H. (Project Participant), Garcia-Valle, R. (Project Participant), Yang, G. (Project Participant), Lind, M. (Project Participant), Blanke, M. (Project Participant), Weckesser, T. (PhD Student), Wittrock, M. L. (PhD Student), Møller, J. G. (PhD Student), Perez, A. (PhD Student), Pedersen, A. S. (PhD Student) & Zhang, X. (Project Participant)
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.",

keywords = "Power system analysis computing, Power system stability, Thevenin equivalent, Algorithms",

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year = "2015",

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booktitle = "Proceedings of IEEE Power \& Energy Society's General Meeting 2015",

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note = "2015 IEEE Power \& Energy Society General Meeting, PESGM 2015 ; Conference date: 26-07-2015 Through 30-07-2015",

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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 Power & Energy Society General Meeting

Y2 - 26 July 2015 through 30 July 2015

ER -

Thevenin Equivalent Method for Dynamic Contingency Assessment

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SOSPO: Secure Operation of Sustainable Power Systems

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