ZnO Surge Arrester Elements with Mixed Direct and 50 Hz Voltages

Haddad, Abderrahmane ORCID: https://orcid.org/0000-0003-4153-6146, Elayyan, H.S.B., German, D.M. and Waters, Ronald 1991. ZnO Surge Arrester Elements with Mixed Direct and 50 Hz Voltages. IEE Proceedings A Science, Measurement and Technology 138 (5) , pp. 265-272. 10.1049/ip-a-3.1991.0038

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Abstract

The characterisation of surge arrester elements allows equivalent circuit representations to be developed. HV tests with variable-frequency supplies have been extended to mixed DC and AC measurements. This is not only relevant to HVDC systems but also to the effect of preconditioning. A new test arrangement allows accurate measurement of such mixed voltage and evaluation of RMS and peak currents and voltages and mean power. An equivalent circuit has been developed which adequately incorporates the mixed-voltage behaviour. A progressive transition of characteristics is found as K(V/sub ac//(V/sub ac/+ V/sub dc/)) is varied from zero to unity. A minimum is found for certain K and voltage values in the power consumption in the arrester element

Item Type:	Article
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher:	The Institution of Electrical Engineers
ISSN:	09607641
Last Modified:	03 Nov 2022 10:01
URI:	https://orca.cardiff.ac.uk/id/eprint/106692

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