Distributed Voltage and Frequency Control of Offshore Wind Farms Connected With a Diode-Based HVdc Link

Blasco-Gimenez, R.; Añó-Villalba, S.; Rodríguez-D’Derlée, J.; Morant, F.; Bernal-Perez, S.

doi:10.1109/tpel.2010.2086491

Cited by 146 publications

(141 citation statements)

References 23 publications

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“…Basic control of WT line-side converters with DR-HVDC 1) Control requirements When connected with DR-HVDC, the WT line-side converters have to work as grid-forming converters rather than grid-feeding converters. In addition to balancing transmitted active power between WT and offshore network, line-side converters also need to establish the offshore network frequency and voltage [8] Fig. 2 shows the overall structure of the system control for the WT line-side converters.…”

Section: Dr-hvdcmentioning

confidence: 99%

“…the offshore wind farm site and connected to a conventional MMC at onshore has received noticeable interests [8]- [15]. This approach was firstly suggested in [8]- [11], and has been further developed in industry for offshore wind farm connection [12], [13].…”

Section: Introductionmentioning

confidence: 99%

“…This approach was firstly suggested in [8]- [11], and has been further developed in industry for offshore wind farm connection [12], [13]. The main benefits of DR-HVDC when compared to VSC-HVDC are lower investment and space requirement, higher efficiency and robustness.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, in DR-HVDC connected offshore wind farms, wind turbine (WT) converters have to control the offshore ac voltage and frequency. In [8], a voltage and frequency control is proposed, while communication for a centralized voltage control is required and all the wind turbines start-up from the beginning, with the synchronization process not being addressed. The fault ride-through performance and the operation with reduced diode rectifier filter are analyzed in [10], [11] using the same control strategy.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to the frequency controllability, the proposed control ensures plug-and-play capability providing automatic synchronization of the offline WTs and minimum impact during disconnection of some of the turbines with the offshore ac network. Such issues have not been considered previously [8], [9]. …”

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confidence: 96%

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Distributed PLL-Based Control of Offshore Wind Turbines Connected With Diode-Rectifier-Based HVDC Systems

2018

IEEE Trans. Power Delivery

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This version is available at https://strathprints.strath.ac.uk/62289/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output.This paper is a post-print of a paper submitted to and accepted for publication in IEEE Transactions on Power Delivery and is subject to Institution of Electrical and Electronic Engineering Copyright. The copy of record is available at IEEE Xplore Digital Library.Abstract-A distributed PLL-based frequency control is proposed in this paper for offshore wind turbine converters connected with diode-rectifier based high-voltage-direct-current (HVDC) systems. The proposed control enables a large number of wind turbines to work autonomously to contribute to the offshore AC frequency and voltage regulation. The proposed control also provides automatic synchronization of the offline wind turbines to the offshore AC grid. Stability of the proposed frequency control is analyzed using root locus method. Moreover, an active dc voltage control of the onshore modular multilevel converter (MMC) is proposed to ride-through onshore AC fault, where the onshore MMC converter quickly increases the dc voltage by adding additional submodules in each phase, in order to rapidly reduce wind farm active power generation so as to achieve quick active power re-balance between the offshore and onshore sides. Thus the overvoltage of the submodule capacitor is alleviated during the onshore fault, reducing the possibility of system disconnection. Simulation results in PSCAD verify the proposed control strategy during start-up, synchronization and under onshore and offshore fault conditions. Index Terms-diode-rectifier based HVDC, distributed PLLbased frequency control, offshore wind power integration, onshore AC fault, synchronization of wind turbine converters I. INTRODUCTION N Europe, onshore wind farms have already been well developed, and more attention has been drawn to offshore sites. Many large offshore wind farms will be developed in the ...

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Section: Dr-hvdcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 96%

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Distributed PLL-Based Control of Offshore Wind Turbines Connected With Diode-Rectifier-Based HVDC Systems

2018

IEEE Trans. Power Delivery

101

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Renewable Energy Systems With Wind Power

Blaabjerg¹,

Ma²

2019

Power Electronics in Renewable Energy Systems and Smart Grid

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A novel control strategy for offshore DFIG-based wind farm integrated through diode-rectifier-based HVDC transmission

Yin

et al. 2015

Int. Trans. Electr. Energ. Syst.

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Summary This paper investigates the control strategy of the offshore DFIG‐based wind farm integrated through a diode‐rectifier‐based HVDC link. The HVDC link is consisted of an uncontrolled diode rectifier, a voltage source inverter and a HVDC line. Based on an in‐depth analysis of the diode‐rectifier‐based HVDC link and the DFIGs, the main influence factors of the offshore ac‐grid voltage are revealed, which proves that the offshore ac‐grid voltage can be kept in a proper range automatically as far as the onshore VSC is operated in constant DC voltage mode. A control strategy is proposed for the offshore ac‐grid frequency control and the maximum power point tracking of the DFIGs. The study shows that the system can be started up with the help of several small power supplies and has a good fault ride‐through performance during onshore PCC short‐circuit faults. Moreover, the offshore wind farm is robust against wind speed variation, frequency reference value variation, capacitor bank switching and wind turbine disconnection. Finally, detailed PSCAD/EMTDC simulations are used to verify the theoretical analysis and the effectiveness of the control strategy. Copyright © 2015 John Wiley & Sons, Ltd.

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Distributed Voltage and Frequency Control of Offshore Wind Farms Connected With a Diode-Based HVdc Link

Cited by 146 publications

References 23 publications

Distributed PLL-Based Control of Offshore Wind Turbines Connected With Diode-Rectifier-Based HVDC Systems

Distributed PLL-Based Control of Offshore Wind Turbines Connected With Diode-Rectifier-Based HVDC Systems

Renewable Energy Systems With Wind Power

A novel control strategy for offshore DFIG-based wind farm integrated through diode-rectifier-based HVDC transmission

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