Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode Rectifiers

Diode rectifiers (DRs) have elicited increasing interest from both industry and academia as a feasible alternative for connecting offshore wind farms (OWFs) to HVDC networks. However, before such technology is deployed, more studies are needed to assess the actual capabilities of DR-connected OWFs t...

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Main Authors: Oscar Saborío-Romano, Ali Bidadfar, Ömer Göksu, Lorenzo Zeni, Nicolaos A. Cutululis
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/17/3387
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author Oscar Saborío-Romano
Ali Bidadfar
Ömer Göksu
Lorenzo Zeni
Nicolaos A. Cutululis
author_facet Oscar Saborío-Romano
Ali Bidadfar
Ömer Göksu
Lorenzo Zeni
Nicolaos A. Cutululis
author_sort Oscar Saborío-Romano
collection DOAJ
description Diode rectifiers (DRs) have elicited increasing interest from both industry and academia as a feasible alternative for connecting offshore wind farms (OWFs) to HVDC networks. However, before such technology is deployed, more studies are needed to assess the actual capabilities of DR-connected OWFs to contribute to the secure operation of the networks linked to them. This study assessed the capability of such an OWF to provide support to an onshore AC network by means of (active) power oscillation damping (POD). A semi-aggregated OWF representation was considered in order to examine the dynamics of each grid-forming wind turbine (WT) within a string when providing POD, while achieving reasonable simulation times. Simulation results corroborate that such an OWF can provide POD by means of OWF active power controls similar to those developed for OWFs connected to HVDC via voltage source converters, while its grid-forming WTs share the reactive power consumption/production and keep the offshore voltage frequency and magnitude within their normal operating ranges. Open-loop test results show that such capability can, however, be restricted at operating points corresponding to the lowest and highest values of active power output.
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spelling doaj.art-a88d44565ccc4efb8c44f95d391562002022-12-22T02:58:26ZengMDPI AGEnergies1996-10732019-09-011217338710.3390/en12173387en12173387Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode RectifiersOscar Saborío-Romano0Ali Bidadfar1Ömer Göksu2Lorenzo Zeni3Nicolaos A. Cutululis4Department of Wind Energy, Technical University of Denmark, Building 115, Risø Campus, Frederiksborgvej 399, 4000 Roskilde, DenmarkDepartment of Wind Energy, Technical University of Denmark, Building 115, Risø Campus, Frederiksborgvej 399, 4000 Roskilde, DenmarkDepartment of Wind Energy, Technical University of Denmark, Building 115, Risø Campus, Frederiksborgvej 399, 4000 Roskilde, Denmarkrsted Offshore, Nesa Allé 1, 2820 Gentofte, DenmarkDepartment of Wind Energy, Technical University of Denmark, Building 115, Risø Campus, Frederiksborgvej 399, 4000 Roskilde, DenmarkDiode rectifiers (DRs) have elicited increasing interest from both industry and academia as a feasible alternative for connecting offshore wind farms (OWFs) to HVDC networks. However, before such technology is deployed, more studies are needed to assess the actual capabilities of DR-connected OWFs to contribute to the secure operation of the networks linked to them. This study assessed the capability of such an OWF to provide support to an onshore AC network by means of (active) power oscillation damping (POD). A semi-aggregated OWF representation was considered in order to examine the dynamics of each grid-forming wind turbine (WT) within a string when providing POD, while achieving reasonable simulation times. Simulation results corroborate that such an OWF can provide POD by means of OWF active power controls similar to those developed for OWFs connected to HVDC via voltage source converters, while its grid-forming WTs share the reactive power consumption/production and keep the offshore voltage frequency and magnitude within their normal operating ranges. Open-loop test results show that such capability can, however, be restricted at operating points corresponding to the lowest and highest values of active power output.https://www.mdpi.com/1996-1073/12/17/3387diode-rectifier-based HVDC transmissiongrid-forming wind turbine controloffshore wind energy integrationpower oscillation damping
spellingShingle Oscar Saborío-Romano
Ali Bidadfar
Ömer Göksu
Lorenzo Zeni
Nicolaos A. Cutululis
Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode Rectifiers
Energies
diode-rectifier-based HVDC transmission
grid-forming wind turbine control
offshore wind energy integration
power oscillation damping
title Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode Rectifiers
title_full Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode Rectifiers
title_fullStr Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode Rectifiers
title_full_unstemmed Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode Rectifiers
title_short Power Oscillation Damping from Offshore Wind Farms Connected to HVDC via Diode Rectifiers
title_sort power oscillation damping from offshore wind farms connected to hvdc via diode rectifiers
topic diode-rectifier-based HVDC transmission
grid-forming wind turbine control
offshore wind energy integration
power oscillation damping
url https://www.mdpi.com/1996-1073/12/17/3387
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