NDLI: Dynamic reconfiguration preserving stability

Content Provider	IEEE Xplore Digital Library
Author	Carroll, J. Nagaraj, K.C. Arapostathis, A. Grady, W.M. Powers, E.J.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA (Carroll, J.; Nagaraj, K.C.; Arapostathis, A.; Grady, W.M.; Powers, E.J.)
Abstract	We present a systematic design method for automatically controlling the reconfiguration of shipboard power systems, which is implemented primarily via switching actions. This method takes advantage of the hybrid system model of the power network, in which certain parameters may be varied discretely or continuously to control the system. Any given state of the discrete switches (relays) that are used to control the system is referred to as a configuration of the power network, and by reconfiguration we mean a control action that effects a change in the state of these relays. We develop control strategies to rapidly assess the stability of a control action, and to find a sequence of discrete control steps that steer the system to a target equilibrium state in a safe and stable fashion. The region of stability for each configuration can be calculated using Lyapunov energy functions, avoiding the necessity of individual trajectory simulations. A switching action is defined as safe if the equilibrium of the pre-switch configuration lies in the region of stability of the post-switch configuration. The concept behind our methodology is the notion of a safe and stable reachability graph whose nodes are the various configurations of the system, where a directed edge between a pair of nodes implies a safe transition from the predecessor node to the successor node. This reachability graph is the basis for a controlling automaton that guides reconfiguration steps.
Starting Page	105
Ending Page	107
File Size	523596
Page Count	3
File Format	PDF
ISBN	0780392590
DOI	10.1109/ESTS.2005.1524661
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Design methodology Power system dynamics Switches Automatic control Power system stability Control system synthesis Control systems Power system relaying Hybrid power systems Power system modeling
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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