Performance and scalability of voltage controllers in multi-terminal HVDC networks
(2017) 2017 American Control Conference, ACC 2017 In Proceedings of the American Control Conference p.3029-3034- Abstract
In this paper, we compare the transient performance of a multi-terminal high-voltage DC (MTDC) grid equipped with a slack bus for voltage control to that of two distributed control schemes: A standard droop controller and a distributed averaging proportional-integral (DAPI) controller. We evaluate performance in terms of an ℋ2 metric that quantifies expected deviations from nominal voltages, and show that the transient performance of a droop or DAPI controlled MTDC grid is always superior to that of an MTDC grid with a slack bus. In particular, by studying systems built up over lattice networks, we show that the ℋ2 norm of a slack bus controlled system may scale unboundedly with network size, while the norm remains... (More)
In this paper, we compare the transient performance of a multi-terminal high-voltage DC (MTDC) grid equipped with a slack bus for voltage control to that of two distributed control schemes: A standard droop controller and a distributed averaging proportional-integral (DAPI) controller. We evaluate performance in terms of an ℋ2 metric that quantifies expected deviations from nominal voltages, and show that the transient performance of a droop or DAPI controlled MTDC grid is always superior to that of an MTDC grid with a slack bus. In particular, by studying systems built up over lattice networks, we show that the ℋ2 norm of a slack bus controlled system may scale unboundedly with network size, while the norm remains uniformly bounded with droop or DAPI control. We simulate the control strategies on radial MTDC networks to demonstrate that the transient performance for the slack bus controlled system deteriorates significantly as the network grows, which is not the case with the distributed control strategies.
(Less)
- author
- Andreasson, Martin ; Tegling, Emma LU ; Sandberg, Henrik LU and Johansson, Karl H. LU
- publishing date
- 2017-06-29
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 2017 American Control Conference, ACC 2017
- series title
- Proceedings of the American Control Conference
- article number
- 7963412
- pages
- 6 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 2017 American Control Conference, ACC 2017
- conference location
- Seattle, United States
- conference dates
- 2017-05-24 - 2017-05-26
- external identifiers
-
- scopus:85027030294
- ISSN
- 0743-1619
- ISBN
- 9781509059928
- DOI
- 10.23919/ACC.2017.7963412
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2017 American Automatic Control Council (AACC).
- id
- ef44da2d-cb9f-46c4-99c2-b19dbd45d5dd
- date added to LUP
- 2021-11-24 09:55:57
- date last changed
- 2022-04-19 18:22:50
@inproceedings{ef44da2d-cb9f-46c4-99c2-b19dbd45d5dd,
abstract = {{<p>In this paper, we compare the transient performance of a multi-terminal high-voltage DC (MTDC) grid equipped with a slack bus for voltage control to that of two distributed control schemes: A standard droop controller and a distributed averaging proportional-integral (DAPI) controller. We evaluate performance in terms of an ℋ<sub>2</sub> metric that quantifies expected deviations from nominal voltages, and show that the transient performance of a droop or DAPI controlled MTDC grid is always superior to that of an MTDC grid with a slack bus. In particular, by studying systems built up over lattice networks, we show that the ℋ<sub>2</sub> norm of a slack bus controlled system may scale unboundedly with network size, while the norm remains uniformly bounded with droop or DAPI control. We simulate the control strategies on radial MTDC networks to demonstrate that the transient performance for the slack bus controlled system deteriorates significantly as the network grows, which is not the case with the distributed control strategies.</p>}},
author = {{Andreasson, Martin and Tegling, Emma and Sandberg, Henrik and Johansson, Karl H.}},
booktitle = {{2017 American Control Conference, ACC 2017}},
isbn = {{9781509059928}},
issn = {{0743-1619}},
language = {{eng}},
month = {{06}},
pages = {{3029--3034}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{Proceedings of the American Control Conference}},
title = {{Performance and scalability of voltage controllers in multi-terminal HVDC networks}},
url = {{http://dx.doi.org/10.23919/ACC.2017.7963412}},
doi = {{10.23919/ACC.2017.7963412}},
year = {{2017}},
}