Optical Investigation of a Spark Gap for DC Protection around Current Zero

Authors

  • R. Methling Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
  • S. Schmausser DEHN SE, Hans-Dehn-Str. 1, 92318 Neumarkt, Germany
  • M. Kellermann DEHN SE, Hans-Dehn-Str. 1, 92318 Neumarkt, Germany
  • A. Ehrhardt DEHN SE, Hans-Dehn-Str. 1, 92318 Neumarkt, Germany
  • S. Gortschakow Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
  • D. Uhrlandt Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
  • D. Gonzalez Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany

DOI:

https://doi.org/10.14311/ppt.2023.3.154

Keywords:

optical emission spectroscopy, dc protection, spark gap

Abstract

The applied experimental setup consists of a pair of fixed electrodes forming a short gap in air. The electrodes are connected with a thyristor forming a parallel current path. Once the thought flashover ignited arc has burnt a given time in the range of several hundreds of microseconds, the thyristor will be fired causing a commutation of the current in the semiconductor path. Hence, the current through the electrode gap will be reduced. The extinguishment of the arc permits the creation of a current zero in the gap. The focus of the experimental work is set to the analysis of the arc plasma during the DC phase and its distinction in the current extinction phase (current zero). High speed camera observation and optical emission spectroscopy are carried out and combined with the electrical measurements.

References

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Published

2023-10-20

Issue

Vol. 10 No. 3 (2023)

Section

Articles

License

Copyright (c) 2023 R. Methling, S. Schmausser, M. Kellermann, A. Ehrhardt, S. Gortschakow, D. Uhrlandt, D. Gonzalez

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