Influence of the filling gas mixture on the interruption capability of medium voltage load break switches

Authors

  • T. Krampert Institute for High Voltage Equipment and Grids, Digitalization and Power Economics, RWTH Aachen University, Schinkelstr. 6, 52056 Aachen https://orcid.org/0000-0002-5161-1958
  • M. Bendig Institute for High Voltage Equipment and Grids, Digitalization and Power Economics, RWTH Aachen University, Schinkelstr. 6, 52056 Aachen https://orcid.org/0000-0002-4287-1459
  • A. Moser Institute for High Voltage Equipment and Grids, Digitalization and Power Economics, RWTH Aachen University, Schinkelstr. 6, 52056 Aachen https://orcid.org/0000-0001-6981-510X
  • M. Schaak Siemens AG, Smart Infrastructure Distribution Systems, Carl-Benz-Str. 22, 60386 Frankfurt am Main

DOI:

https://doi.org/10.14311/ppt.2021.2.19

Keywords:

load break switch, alternative gas, thermal interruption capability, dielectric recovery

Abstract

In today’s medium voltage switchgear SF6 is commonly used as insulating and arc quenching medium. Because of its high potential impact on the environment a substitution with an environmentally friendly alternative is pursued. In this paper the influence of the mixing ratio of carbon dioxide nitrogen mixtures as filling gas on the interruption capability in medium voltage load break switches is investigated. The interruption capability is regarded by means of the thermal interruption performance as well as the dielectric recovery of a model load break switch. The model load break switch allows an axial arc blowing with variable pressure and uses an exchangeable nozzle system.

References

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Published

2021-11-25

Issue

Vol. 8 No. 2 (2021)

Section

Articles

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Copyright (c) 2021 T. Krampert, M. Bendig, A. Moser, M. Schaak

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