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Bypass operation in bridge convertors for high-voltage d.c. transmission

Vithayathil, John J (1965) Bypass operation in bridge convertors for high-voltage d.c. transmission. In: Proceedings of the Institution of Electrical Engineers, 112 (2). pp. 359-365.

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Bypass operation with the aid of a special bypass valve is an important part of present-day schemes of protection for h.v. d.c. transmission systems. In this paper, the possibility of using two valves connected to any phase in the bridge convertor for the purpose of bypass operation is studied. The scheme is based on the use of logic circuits in conjunction with modified methods of fault detection. Analysis of the faults in a d.c. transmission system is carried out with the object of determining the requirements of such a logic-circuit control system. An outline of the scheme for the logic-circuit control of the bypass operation for both rectifier and invertor bridges is then given. Finally, conclusions are drawn regarding the advantages of such a system, which include reduction in the number of valves, prevention of severe faults and fast clearance of faults, in addition to the immediate location of the fault and its nature.

Item Type: Journal Article
Publication: Proceedings of the Institution of Electrical Engineers
Publisher: IEEE
Additional Information: Copyright 1965 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 27 Feb 2012 10:53
Last Modified: 27 Feb 2012 10:53
URI: http://eprints.iisc.ac.in/id/eprint/43073

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