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Corrective control: stability analysis of Unified Controller combining frequency control and congestion management

Khamisov, O. O. and Chernova, T. S. and Bialek, J. W. and Low, S. H. (2018) Corrective control: stability analysis of Unified Controller combining frequency control and congestion management. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20190627-103322354

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Abstract

This paper analyses stability of the Unified Controller (UC) that combines frequency control and congestion management and therefore makes it possible to move from preventive to corrective power system control. Earlier work by the authors of UC proved asymptotic stability of the methodology but the proof was based on a simplified first-order model of the turbine and turbine governor. We show that a higher order model of the turbine governor leads to eigenvalues with small but positive real parts. Consequently, we develop a modification of the methodology that decouples the physical and control systems and therefore results in all the eigenvalues having negative real parts. We illustrate the effectiveness of the modification on a realistic model of 39-bus model of New England power system implemented in Power System Toolbox (PST).


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1806.10303arXivDiscussion Paper
ORCID:
AuthorORCID
Low, S. H.0000-0001-6476-3048
Subject Keywords:power system frequency control, congestion management, distributed control, power system dynamics
Record Number:CaltechAUTHORS:20190627-103322354
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190627-103322354
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96782
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Jun 2019 18:41
Last Modified:03 Oct 2019 21:25

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