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AC fault ride-through capability of a VSC-HVDC transmission systems

Adam, Grain Philip and Finney, Stephen and Williams, Barry (2010) AC fault ride-through capability of a VSC-HVDC transmission systems. In: Proceedings of the 2010 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 3739 - 3745. ISBN 978-1-4244-5286-6

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This paper presents a recovery strategy that enables DC transmission systems based on voltage source converters to ride-through different ac faults with minimum current and voltage stresses on the converter switching devices. The proposed recovery strategy eliminates the trapped energy in the dc link during ac faults; as a result the rise in the dc link voltage is prevented. This may eliminate the need for the dc chopper in the dc link, as proposed in the literature, to dissipate the trapped energy. To demonstrate the effectiveness of the recovery strategy, several fault conditions are considered, including, symmetrical and asymmetrical faults. The proposed recovery strategy improves the resiliency of the VSC-HVDC transmission system to different ac faults, which can be summarized as follows: limited current contribution to the fault and limited current and voltage stress on the switching devices as the rise in the dc link voltage is significantly reduced or prevented.

Item type: Book Section
ID code: 40625
Keywords: limited current stress , AC fault ride-through capability, HVDC power transmission , power convertors , power transmission faults , Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Pure Administrator
Date Deposited: 01 Aug 2012 11:44
Last modified: 21 May 2015 19:44
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