International Journal of Scientific Engineering and Research (IJSER)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed | ISSN: 2347-3878


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India | Electrical Engineering | Volume 3 Issue 7, July 2015 | Pages: 57 - 61


A New Network Proposal for Fault-Tolerant HVDC Transmission Systems

Malothu Malliswari, M. Srinu

Abstract: This paper proposes a new stock 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 stretchability 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.

Keywords: HVDC,FAULT TOLERANT,STACK OF NETWORK



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