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New Breed of Network Fault-Tolerant Voltage-Source-Converter HVDC Transmission System

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5 Author(s)
Adam, G.P. ; Inst. of Energy & Environ., Univ. of Strathclyde, Glasgow, UK ; Ahmed, K.H. ; Finney, S.J. ; Bell, K.
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This paper proposes a new breed of high-voltage dc (HVDC) transmission systems based on a hybrid multilevel voltage source converter (VSC) with ac-side cascaded H-bridge cells. The proposed HVDC system offers the operational flexibility of VSC-based systems in terms of active and reactive power control, black-start capability, in addition to improved ac fault ride-through capability and the unique feature of current-limiting capability during dc side faults. Additionally, it offers features such as smaller footprint and a larger active and reactive power capability curve than existing VSC-based HVDC systems, including those using modular multilevel converters. To illustrate the feasibility of the proposed HVDC system, this paper assesses its dynamic performance during steady-state and network alterations, including its response to ac and dc side faults.

Published in:

Power Systems, IEEE Transactions on  (Volume:28 ,  Issue: 1 )

Date of Publication:

Feb. 2013

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