Analysis of Transmission Line Electromagnetic Interference on Touch and Step Voltages on Buried Gas Pipeline under Different Shielding and Resistivity Conditions

Çetin, Özgür; Duzkaya, H.; Taplamacıoğlu, M. Cengiz

doi:10.1109/ecai52376.2021.9515113

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The resulting currents and voltages can lead to several kinds of unwanted effect. Workers coming into contact with the pipeline are subjected to shock hazards [3]; the connected cathodic protection systems and the pipeline itself can be damaged through accelerated aging and corrosion [4,5], as well as through perforations of its coating layer [6,7]. Pipelines can also be harmed by other sources of interference; for example, in recent years a number of works have been devoted to the effects produced by high-voltage direct current (HVDC) systems [8,9], as well as traction systems [10] and geomagnetic events [11].…”

Section: Introduction Concerns Over Metallic Pipelines Integritymentioning

confidence: 99%

FLARE: A Framework for the Finite Element Simulation of Electromagnetic Interference on Buried Metallic Pipelines

Popoli,

Pierotti,

Ragazzi

et al. 2023

Applied Sciences

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The functionality of buried metallic pipelines can be compromised by the electrical lines that share the same right-of-way. Given the considerable size of shared corridors, computer simulation is an important tool for performing risk assessment and mitigation design. In this work, we introduce an open-source computational framework for the analysis of electromagnetic interference on large earth-return structures. The developed framework is based on FLARE—an efficient finite element solver developed by the authors in MATLAB®. FLARE includes solvers for problems involving static electric and magnetic fields, and DC and time-harmonic AC currents. Quasi-magnetostatic transient problems can be studied through time-marching or—for linear problems—with an efficient inverse-Laplace approach. In this work, we succinctly describe the optimization of time-critical operations in FLARE, as well as the implementation of a transient solver with automatic time-stepping. We validate the numerical results obtained with FLARE via a comparison with the commercial software COMSOL Multiphysics®. We then use the validated time-marching analysis results to test the accuracy and efficiency of three numerical inverse-Laplace algorithms. The test problem considered is the assessment of the inductive coupling between a 500 kV transmission line and a metallic pipeline buried in the soil.

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