de Courreges d'Ustou, Benoit
(2013)
Optimal Control Design for Multiterminal HVDC.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
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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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
| Creators | Email | Pitt Username | ORCID  |
|---|
| de Courreges d'Ustou, Benoit | bmd44@pitt.edu | BMD44 | |
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| ETD Committee: |
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| 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 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/16529 |
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