Real-time estimation and damping of SSR in a VSC-HVDC connected series-compensated system

Tibin Joseph; Carlos E. Ugalde-Loo; Senthooran Balasubramaniam; Jun Liang

doi:10.1109/TPWRS.2018.2854641

Real-time estimation and damping of SSR in a VSC-HVDC connected series-compensated system

Tibin Joseph
, Carlos E. Ugalde-Loo
, Senthooran Balasubramaniam
, Jun Liang

Cardiff University
Swansea University

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

148 Downloads (Pure)

Abstract

Infrastructure reinforcement using high-voltage direct-current (HVDC) links and series compensation has been proposed to boost the power transmission capacity of existing ac grids. However, deployment of series capacitors may lead to subsynchronous resonance (SSR). Besides providing bulk power transfer, voltage source converter (VSC)-based HVDC links can be effectively used to damp SSR. To this end, this paper presents a method for the real-time estimation of the subsynchronous frequency component present in series-compensated transmission lines-key information required for the optimal design of damping controllers. A state-space representation has been formulated and an eigenvalue analysis has been performed to evaluate the impact of a VSC-HVDC link on the torsional modes of nearby connected thermal generation plants. Furthermore, the series-compensated system has been implemented in a real-time digital simulator and connected to a VSC-HVDC scaled-down test-rig to perform hardware-in-the-loop tests. The efficacy and operational performance of the ac/dc network while providing SSR damping is tested through a series of experiments. The proposed estimation and damping method shows a good performance both in time-domain simulations and laboratory experiments.

Original language	English
Article number	8411163
Pages (from-to)	7052-7063
Number of pages	12
Journal	IEEE Transactions on Power Systems
Volume	33
Issue number	6
DOIs	https://doi.org/10.1109/TPWRS.2018.2854641
Publication status	Published - 16 Jul 2018
Externally published	Yes

Bibliographical note

Open Access. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/

Funding

Manuscript received December 18, 2017; revised May 15, 2018; accepted June 23, 2018. Date of publication July 16, 2018; date of current version October 18, 2018. This work was supported in part by the People Programme (Marie Curie Actions) of the EU FP7 Programme (FP7/2007–2013) through the project “Multi-terminal DC grid for offshore wind” (MEDOW) under Grant 317221, and in part by the EU FP7 Programme through the project “Beyond State of the art Technologies for rePowering AC corridors & multi-Terminal HVDC Systems” (BEST PATHS) under Grant 612748. Paper no. TPWRS-01881-2017. (Corresponding author: Carlos E. Ugalde-Loo.) T. Joseph, C. E. Ugalde-Loo, and J. Liang are with the School of Engineering, Cardiff University, Cardiff CF24 3AA, U.K. (e-mail:, [email protected]; [email protected]; [email protected]).

Keywords

eigenanalysis
high-voltage direct-current (HVDC)
real-time estimation
series compensation
Subsynchronous resonance (SSR)
voltage source converter (VSC)

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/TPWRS.2018.2854641Licence: CC BY

PublishedFinal published version, 10.3 MBLicence: CC BY

Cite this

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title = "Real-time estimation and damping of SSR in a VSC-HVDC connected series-compensated system",

abstract = "Infrastructure reinforcement using high-voltage direct-current (HVDC) links and series compensation has been proposed to boost the power transmission capacity of existing ac grids. However, deployment of series capacitors may lead to subsynchronous resonance (SSR). Besides providing bulk power transfer, voltage source converter (VSC)-based HVDC links can be effectively used to damp SSR. To this end, this paper presents a method for the real-time estimation of the subsynchronous frequency component present in series-compensated transmission lines-key information required for the optimal design of damping controllers. A state-space representation has been formulated and an eigenvalue analysis has been performed to evaluate the impact of a VSC-HVDC link on the torsional modes of nearby connected thermal generation plants. Furthermore, the series-compensated system has been implemented in a real-time digital simulator and connected to a VSC-HVDC scaled-down test-rig to perform hardware-in-the-loop tests. The efficacy and operational performance of the ac/dc network while providing SSR damping is tested through a series of experiments. The proposed estimation and damping method shows a good performance both in time-domain simulations and laboratory experiments.",

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N2 - Infrastructure reinforcement using high-voltage direct-current (HVDC) links and series compensation has been proposed to boost the power transmission capacity of existing ac grids. However, deployment of series capacitors may lead to subsynchronous resonance (SSR). Besides providing bulk power transfer, voltage source converter (VSC)-based HVDC links can be effectively used to damp SSR. To this end, this paper presents a method for the real-time estimation of the subsynchronous frequency component present in series-compensated transmission lines-key information required for the optimal design of damping controllers. A state-space representation has been formulated and an eigenvalue analysis has been performed to evaluate the impact of a VSC-HVDC link on the torsional modes of nearby connected thermal generation plants. Furthermore, the series-compensated system has been implemented in a real-time digital simulator and connected to a VSC-HVDC scaled-down test-rig to perform hardware-in-the-loop tests. The efficacy and operational performance of the ac/dc network while providing SSR damping is tested through a series of experiments. The proposed estimation and damping method shows a good performance both in time-domain simulations and laboratory experiments.

AB - Infrastructure reinforcement using high-voltage direct-current (HVDC) links and series compensation has been proposed to boost the power transmission capacity of existing ac grids. However, deployment of series capacitors may lead to subsynchronous resonance (SSR). Besides providing bulk power transfer, voltage source converter (VSC)-based HVDC links can be effectively used to damp SSR. To this end, this paper presents a method for the real-time estimation of the subsynchronous frequency component present in series-compensated transmission lines-key information required for the optimal design of damping controllers. A state-space representation has been formulated and an eigenvalue analysis has been performed to evaluate the impact of a VSC-HVDC link on the torsional modes of nearby connected thermal generation plants. Furthermore, the series-compensated system has been implemented in a real-time digital simulator and connected to a VSC-HVDC scaled-down test-rig to perform hardware-in-the-loop tests. The efficacy and operational performance of the ac/dc network while providing SSR damping is tested through a series of experiments. The proposed estimation and damping method shows a good performance both in time-domain simulations and laboratory experiments.

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Real-time estimation and damping of SSR in a VSC-HVDC connected series-compensated system

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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