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Optimal Control Design for Multiterminal HVDC

de Courreges d'Ustou, Benoit (2013) Optimal Control Design for Multiterminal HVDC. Master's Thesis, University of Pittsburgh. (Unpublished)

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This thesis proposes an optimal-control based design for distributed frequency control in multi-terminal high voltage direct current (MTDC) systems. The current power grid has become overstressed by rapid growth in the demand for electric power and penetration of renewable energy. To address these challenges, MTDC technology has been developed, which has the potential to increase the flexibility and reliability of power transmission in the grid. Several control strategies have been proposed to regulate the MTDC system and its interaction with connected AC systems. However, all the existing control strategies are based on proportional and integral (PI) control with predetermined controller structures. The objective of the thesis is to first determine if existing control structures are optimal, and if improved controller structures can be developed.The thesis proposes a general framework to determine the optimal structure for the control system in MTDC transmission through optimal feedback control. The proposed method is validated and demonstrated using an example of frequency control in a MTDC system connecting five AC areas.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
de Courreges d'Ustou, Benoitbmd44@pitt.eduBMD44
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee CoChairZhi-Hong, Maozhm4@pitt.eduZHM4
Committee CoChairReed, Gregorygfr3@pitt.eduGFR3
Committee MemberEl Nokali, Mahmoudmen@pitt.eduMEN
Committee MemberStanchina, Williamwes25@pitt.eduWES25
Date: 31 January 2013
Date Type: Publication
Defense Date: 7 November 2012
Approval Date: 31 January 2013
Submission Date: 20 November 2012
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 47
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Electrical Engineering
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Multiterminal HVDC, optimal control, decentralized and centralized control, AC-DC interconnection, frequency stability
Date Deposited: 31 Jan 2013 20:41
Last Modified: 15 Nov 2016 14:07


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