Thyristor valve arrester and DC power transmission thyristor val

Details Thyristor valve arrester and DC power transmission thyristor val Thyristor valve arrester and DC power transmission thyristor val

1993-11-03

1996-05-07

DeBoer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

363 54, 327438, H02H 906

Patent

active

055152317

ABSTRACT:
An object of the present invention is to provide a thyristor valve arrester capable of measuring leakage currents of arrester elements in a simple construction and a DC power transmission thyristor valve having it used therein.
A multiple of laminated arrester sets are arranged in parallel with a multiple of thyristor valves. Each arrester set is made of a plurality of arrester units arranged in parallel. Each adjoining arrester sets has through an insulator an inter-stage connecting conductor therebetween at a position corresponding to the respective thyristor valve terminals. An end of each arrester set and the respective inter-stage connecting conductors have a leakage current ammeter and a surge counter connected therebetween in electrical parallel. Each inter-stage connecting conductor and the respective thyristor valve stage are connected together by a thyristor valve connecting conductor.

REFERENCES:
patent: 3601632 (1971-08-01), Frazier
patent: 4819983 (1989-03-01), Yoshizumi et al.
Siemens Power Engineering and Automation, vol. VII, No. 5, 1985, "Metal-Oxide Surge Arresters for the Thyristor Valves of the Durnrohr HVDC Back-to-Back Converter Station", M. Crucius et al, pp. 352-355.
IEEE, 1988, 88 WM 031-7, "Power Dissipation Characteristics of Zinc-Oxide Arresters for HVDC Systems", S. Horiuchi et al, pp. 1-6.
'92 National Meeting of the Society of Electrical Engineering, S13-10, "Arrester for AC/DC Conversion Station".

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