Control strategy for hybrid high-voltage DC systems connecting voltage-weak grids

Gyusub Lee; Dohoon Kwon; Seungil Moon; Chanki Kim

doi:10.1109/PESGM.2017.8273812

Control strategy for hybrid high-voltage DC systems connecting voltage-weak grids

Gyusub Lee, Dohoon Kwon, Seungil Moon, Chanki Kim

Dept. of Electrical and Information Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Scopus citations

Abstract

High-voltage dc (HVDC) systems are being adopted for grid connections by grid operators and transmission owners. Among the converter topologies, the line-commutated converter (LCC) is more economical than the voltage-sourced converter (VSC); however, its reactive power cannot be controlled. Hybrid HVDC, a mixed topology containing both LCC and VSC, demonstrates the benefits of both topologies. In this paper, a hybrid HVDC control scheme with an LCC sending end and a VSC receiving end is proposed. It is used to control sending-end reactive power. Using the proposed secondary controller, hybrid HVDC - using only shunt devices, filters, or capacitor banks - can have the same reactive abilities as VSC HVDCs. This reduces the cost of connecting the voltage-weak grids and ensures that the voltage-weak grids are not afflicted by voltage stresses. The proposed secondary controller was verified to be effective through PSCAD/EMTDC simulations.

Original language	English
Title of host publication	2017 IEEE Power and Energy Society General Meeting, PESGM 2017
Publisher	IEEE Computer Society
Pages	1-5
Number of pages	5
ISBN (Electronic)	9781538622124
DOIs	https://doi.org/10.1109/PESGM.2017.8273812
State	Published - 29 Jan 2018
Event	2017 IEEE Power and Energy Society General Meeting, PESGM 2017 - Chicago, United States Duration: 16 Jul 2017 → 20 Jul 2017

Publication series

Name	IEEE Power and Energy Society General Meeting
Volume	2018-January
ISSN (Print)	1944-9925
ISSN (Electronic)	1944-9933

Conference

Conference	2017 IEEE Power and Energy Society General Meeting, PESGM 2017
Country/Territory	United States
City	Chicago
Period	16/07/17 → 20/07/17

Keywords

Hybrid high-voltage dc (HVDC)
Line-commutated converter HVDC (LCC HVDC)
Reactive power capability (RPC)
Secondary controller

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/PESGM.2017.8273812

Cite this

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title = "Control strategy for hybrid high-voltage DC systems connecting voltage-weak grids",

abstract = "High-voltage dc (HVDC) systems are being adopted for grid connections by grid operators and transmission owners. Among the converter topologies, the line-commutated converter (LCC) is more economical than the voltage-sourced converter (VSC); however, its reactive power cannot be controlled. Hybrid HVDC, a mixed topology containing both LCC and VSC, demonstrates the benefits of both topologies. In this paper, a hybrid HVDC control scheme with an LCC sending end and a VSC receiving end is proposed. It is used to control sending-end reactive power. Using the proposed secondary controller, hybrid HVDC - using only shunt devices, filters, or capacitor banks - can have the same reactive abilities as VSC HVDCs. This reduces the cost of connecting the voltage-weak grids and ensures that the voltage-weak grids are not afflicted by voltage stresses. The proposed secondary controller was verified to be effective through PSCAD/EMTDC simulations.",

keywords = "Hybrid high-voltage dc (HVDC), Line-commutated converter HVDC (LCC HVDC), Reactive power capability (RPC), Secondary controller",

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Lee, G, Kwon, D, Moon, S & Kim, C 2018, Control strategy for hybrid high-voltage DC systems connecting voltage-weak grids. in 2017 IEEE Power and Energy Society General Meeting, PESGM 2017. IEEE Power and Energy Society General Meeting, vol. 2018-January, IEEE Computer Society, pp. 1-5, 2017 IEEE Power and Energy Society General Meeting, PESGM 2017, Chicago, United States, 16/07/17. https://doi.org/10.1109/PESGM.2017.8273812

Control strategy for hybrid high-voltage DC systems connecting voltage-weak grids. / Lee, Gyusub; Kwon, Dohoon; Moon, Seungil et al.
2017 IEEE Power and Energy Society General Meeting, PESGM 2017. IEEE Computer Society, 2018. p. 1-5 (IEEE Power and Energy Society General Meeting; Vol. 2018-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Lee, Gyusub

AU - Kwon, Dohoon

AU - Moon, Seungil

AU - Kim, Chanki

PY - 2018/1/29

Y1 - 2018/1/29

N2 - High-voltage dc (HVDC) systems are being adopted for grid connections by grid operators and transmission owners. Among the converter topologies, the line-commutated converter (LCC) is more economical than the voltage-sourced converter (VSC); however, its reactive power cannot be controlled. Hybrid HVDC, a mixed topology containing both LCC and VSC, demonstrates the benefits of both topologies. In this paper, a hybrid HVDC control scheme with an LCC sending end and a VSC receiving end is proposed. It is used to control sending-end reactive power. Using the proposed secondary controller, hybrid HVDC - using only shunt devices, filters, or capacitor banks - can have the same reactive abilities as VSC HVDCs. This reduces the cost of connecting the voltage-weak grids and ensures that the voltage-weak grids are not afflicted by voltage stresses. The proposed secondary controller was verified to be effective through PSCAD/EMTDC simulations.

AB - High-voltage dc (HVDC) systems are being adopted for grid connections by grid operators and transmission owners. Among the converter topologies, the line-commutated converter (LCC) is more economical than the voltage-sourced converter (VSC); however, its reactive power cannot be controlled. Hybrid HVDC, a mixed topology containing both LCC and VSC, demonstrates the benefits of both topologies. In this paper, a hybrid HVDC control scheme with an LCC sending end and a VSC receiving end is proposed. It is used to control sending-end reactive power. Using the proposed secondary controller, hybrid HVDC - using only shunt devices, filters, or capacitor banks - can have the same reactive abilities as VSC HVDCs. This reduces the cost of connecting the voltage-weak grids and ensures that the voltage-weak grids are not afflicted by voltage stresses. The proposed secondary controller was verified to be effective through PSCAD/EMTDC simulations.

KW - Hybrid high-voltage dc (HVDC)

KW - Line-commutated converter HVDC (LCC HVDC)

KW - Reactive power capability (RPC)

KW - Secondary controller

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Control strategy for hybrid high-voltage DC systems connecting voltage-weak grids

Abstract

Publication series

Conference

Keywords

UN SDGs

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