Operation and Control of HVDC-Connected Offshore Wind Farm

Muyeen, S. M.; Takahashi, Rion; Tamura, Junji

doi:10.1109/tste.2010.2041561

Cited by 207 publications

(113 citation statements)

References 12 publications

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“…Modeling of the VSCs in the d-q rotating frame has been documented in [14,15], and, therefore, no further details are given here. The controller shown in Fig.…”

Section: Ac Voltage Control Of Wfvscsmentioning

confidence: 99%

Research on hybrid multi-terminal high-voltage DC technology for offshore wind farm integration

Zhan

Wen

et al. 2013

J. Mod. Power Syst. Clean Energy

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Multi-terminal high-voltage DC (MTDC) technology is a promising way to transmit large amounts of offshore wind power to the main grids. This paper proposes a hybrid MTDC scheme to integrate several offshore wind farms into the onshore power grids at different locations. A hybrid four-terminal HVDC system comprising two onshore line commutated converters (LCCs) and two voltage source converters (VSCs) connecting an offshore wind farm is constructed in PSCAD/EMTDC. A coordination control scheme based on the VSCs' AC voltage control and the LCCs' DC voltage droop control is designed to ensure smooth system operation and proper power sharing between onshore AC grids. The operational characteristics of the system are analyzed. In addition, a black start-up method without any auxiliary power supply for the VSCs is proposed. The transmission scheme is tested through simulations under various conditions, including start-up, wind speed variation, and the disconnection of one VSC or of one LCC.

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“…Modeling of the VSCs in the d-q rotating frame has been documented in [14,15], and, therefore, no further details are given here. The controller shown in Fig.…”

Section: Ac Voltage Control Of Wfvscsmentioning

confidence: 99%

Research on hybrid multi-terminal high-voltage DC technology for offshore wind farm integration

Zhan

Wen

et al. 2013

J. Mod. Power Syst. Clean Energy

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“…Many large offshore wind farms will be developed in the near future, thus reliable and efficient technology for transmitting the offshore wind power is one of the main development focuses. High voltage direct current (HVDC) technology has been identified as a preferred choice for longdistance offshore wind power transmission [1]- [7].…”

Section: Introductionmentioning

confidence: 99%

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

2018

IEEE Trans. Power Delivery

108

135

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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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“…Third, PMSGs can be manufactured in small sizes because of their large air gaps and reduced flux linkage. Fourth, the PMSG wind energy system can operate without a gearbox due to the use of low-speed synchronous generators with large number of poles [3]- [7].…”

Section: Introductionmentioning

confidence: 99%

“…According to the commercially used full-capacity power converter operated wind energy conversion systems, the most common converter topology for PMSGs is back-to-back Voltage Source Converters (VSC), back-to-back Neutral Point Clamped (NPC) converters [3] and diode rectifier with DC/DC boost converter and inverter [8]. The topology with a diode rectifier and a boost converter simplified the control and reduced the cost of the system, but the generator torque waveform contains ripples [4].…”

Section: Introductionmentioning

confidence: 99%