Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Uncertainty of Standardized Track Insulation Measurement Methods for Stray Current Assessment

Version 1 : Received: 25 May 2023 / Approved: 26 May 2023 / Online: 26 May 2023 (10:42:05 CEST)

A peer-reviewed article of this Preprint also exists.

Bhagat, S.; Bongiorno, J.; Mariscotti, A. Uncertainty of Standardized Track Insulation Measurement Methods for Stray Current Assessment. Sensors 2023, 23, 5900. Bhagat, S.; Bongiorno, J.; Mariscotti, A. Uncertainty of Standardized Track Insulation Measurement Methods for Stray Current Assessment. Sensors 2023, 23, 5900.

Abstract

Stray current is a relevant phenomenon in particular for DC electrified transportation systems, affecting the track and infrastructure within the right of way and other structures and installations nearby. It worsens with time and the level of protection depend on timely maintenance, besides correct design choices. The assessment of track insulation is the starting point for both stray current monitoring systems and at commissioning or upon major changes. Standardized methods (ref. EN 50122-2, or IEC 62128-2) are almost unchanged in the last 20 years, but suffer from accuracy issues and variability due to parameters and conditions not under operator’s control. A critical discussion and analysis of the sources of variability and practical constraints is proposed, followed by the evaluation of uncertainty, with the objective not only to assess the accuracy of provided results, but to foster research on innovative, more flexible and accurate, methods.

Keywords

DC power systems; guideway electric transportation systems; stray current; test methods; uncertainty

Subject

Engineering, Electrical and Electronic Engineering

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