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A multi-terminal HVDC transmission system for offshore wind farms with induction generators

Liang, Jun ORCID:, Gomis-Bellmunt, Oriol, Ekanayake, Janaka ORCID:, Jenkins, Nicholas ORCID: and An, Wen 2012. A multi-terminal HVDC transmission system for offshore wind farms with induction generators. International Journal of Electrical Power & Energy Systems 43 (1) , pp. 54-62. 10.1016/j.ijepes.2012.04.063

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Voltage source converter, multi-terminal HVDC transmission (MTDC) for the connection of large offshore wind farms to the terrestrial grid is investigated. Induction generators without the need of wind turbine converters are installed in the wind farms due to the supports from the voltage source converters of the HVDC. A control system is designed which incorporates the voltage–current characteristics of the voltage source converters and the power reduction from the wind turbines during a fault. During normal operation, grid side converters control the DC voltage and coordinate the power sharing to the terrestrial grids. During abnormal operation, wind farm side converters take over the DC voltage control and coordinate the power reduction between wind farms. The control system removes the requirement for fast communication between the converters and achieves automatic coordination. The dynamic performance of a MTDC with the control system is tested through simulations using PSCAD/EMTDC.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Uncontrolled Keywords: Multi-terminal HVDC; Offshore wind power; Induction generator; Power reduction coordination
Publisher: Elsevier
ISSN: 0142-0615
Last Modified: 25 Oct 2022 09:10

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