The application of ultra-high speed (1MHz) imaging in the verification of a computational model of arc motion

McBride, John, Cross, K.J. and Shin, D (2022) The application of ultra-high speed (1MHz) imaging in the verification of a computational model of arc motion. Metrology Letters. (In Press)

Record type: Article

Abstract

This paper focuses on the verification of computational modelling of arc motion under short circuit conditions in low voltage circuit breakers using controlled experimental conditions, where an arc imaging system (AIS) is used to provide quantitative information on arc motion. It is shown that the motion of an arc root on a metallic surface, is linked to the arc voltage and that the computational model provides a representation of the overall arc movement, but is unable to predict high frequency events (1 MHz) associated with the arc entry into splitter plates and re-strikes within the arc chamber. To enable a prediction of arc voltage prior to extinction, referred to as the arc exit voltage, a modification to
the arc model is shown and discussed with reference to the observed information from the AIS.

Text

8. ML 2; AIS based on GD conf. v4

Available under License University of Southampton Accepted Manuscript Licence.

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