Topologies of multiterminal HVDC-VSC transmission for large offshore wind farms

Gomis‐Bellmunt, Oriol; Liang, Jun; Ekanayake, Janaka; King, R.; Jenkins, Nick

doi:10.1016/j.epsr.2010.09.006

Cited by 223 publications

(133 citation statements)

References 24 publications

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“…There is no terminal to terminal connection. This topology is not normally used with AC transmission but they are common in distribution systems and it has other operational and cost advantages and disadvantages which are studied in [10].…”

Section: A Protection Methodsmentioning

confidence: 99%

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Offshore DC grids as an interconnection of radial systems: Protection and control aspects

Jovcic

Taherbaneh

Taisne

et al. 2015

2015 IEEE Power &Amp; Energy Society General Meeting

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Abstract-This article presents a topology for DC grids which enables very robust DC fault protection with moderate costs, good operating flexibility and simple controls. It is postulated that radial DC systems are best suited for limited-size local DC grids. Radial topology enables robust and fast protection selectivity using only local signals and exploiting the advantages of hybrid DC circuit breakers. To enable flexible expansion options to national/international systems, it is suggested to interconnect star points of radial systems using DC/DC converters. DC/DC converters enable inherent isolation of DC faults and provide firewall between radial DC grids. Each interconnecting cable is protected by a DC/DC at one end and a hybrid Circuit Breaker at the other end. The control options for DC/DC converter and the radial grids are analysed. A detailed simulation model of 6 terminal DC grid with 2-star points is presented. The PSCAD simulation results confirm DC fault isolation and good control performance of the proposed topology for a range of DC fault contingencies.

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Section: A Protection Methodsmentioning

confidence: 99%

“…Reference [10] presents a comprehensive cost comparison of DC grid topologies. The conclusions are derived solely on the cost and operational basis but practical aspects of protection system are not evaluated in depth.…”

Section: Introductionmentioning

confidence: 99%

Offshore DC grids as an interconnection of radial systems: Protection and control aspects

Jovcic

Taherbaneh

Taisne

et al. 2015

2015 IEEE Power &Amp; Energy Society General Meeting

View full text Add to dashboard Cite

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“…If shorter line lengths are required, the GRT can be attractive. However, it requires higher ratings of some lines [62].…”

Section: Vsc Hvdc Multi-terminal System Topologiesmentioning

confidence: 99%

“…The main topologies are [62],  General Ring Topology (GRT): all nodes of network are connected in ring. [62] compares various topologies regarding several factors, such as the number of DC breakers, the ratings of lines and additional required construction.…”

Section: Vsc Hvdc Multi-terminal System Topologiesmentioning

confidence: 99%

Review of VSC HVDC connection for offshore wind power integration

Korompili

Zhao

2016

Renewable and Sustainable Energy Reviews

117

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Voltage Source Converter (VSC) High Voltage Direct Current (HVDC) connection has become a new trend for long distance offshore wind power transmission. It has been confirmed by a lot of research that the maximum distance of a High Voltage Alternative Current (HVAC) sub-marine cable transmission system is limited due to surplus charging current of the cables. The VSC HVDC transmission system has the ability to overcome the limitation and offers other advantages over the HVAC transmission system. This paper is to review the VSC HVDC transmission technology and its application for offshore wind power integration. Firstly, the main components, configuration and topology of the VSC HVDC transmission system are described.Secondly, the converter control system and control strategies are presented. Following that, the capabilities of the VSC HVDC technology are described. Finally, the focus is given on the control methods of the VSC HVDC transmission system for fulfilling grid code requirements concerning Low Voltage Ride-Through (LVRT) and frequency regulation.

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“…It offers low transmission losses, small filter requirements resulting in less foot-print, black-start capability of the offshore grid and less raw material for the cables compared to AC [3]. In the future, interconnection between several HVDC connections might evolve into a meshed HVDC grid to integrate flawlessly offshore wind into the European grids [4,5,6]. …”

Section: Introductionmentioning

confidence: 99%