A numerical model for the calculation of electromagnetic interference from power lines on nonparallel underground pipelines

Arturo Popoli, Andrea Cristofolini and Leonardo Sandrolini

Mathematics and Computers in Simulation (MATCOM), 2021, vol. 183, issue C, 221-233

Abstract: This work proposes a numerical methodology for the calculation of currents and voltages induced on underground pipelines by nearby overhead power lines. A previously developed quasi-3D methodology is extended, allowing the investigation of nonparallel routings of the pipelines with respect to the power lines. The proposed technique is based on a discretization of the pipeline path into several segments parallel to the power line. The section of the corridor corresponding to each pipeline segment is regarded as an electrical multi-port component, whose electrical parameters are extracted via finite element 2D analysis. Then, the obtained components are integrated into a network embodying the physical characteristics of the whole corridor. In this way, the circuital analysis is used to extend the capabilities of a standard two-dimensional field analysis. The proposed methodology is employed to simulate a pipeline running parallel to a power line for a distance of 12km. Afterwards, several nonparallel configurations – consisting of crossings between a pipeline and a power line – are assessed. The physical consequences of the crossing are discussed and a convergence study is performed to investigate the optimal pipeline subdivision procedure to be adopted for a set of different crossing angles.

Keywords: Electromagnetic compatibility; Electromagnetic coupling; Finite element analysis; Pipelines; Equivalent circuit (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:183:y:2021:i:c:p:221-233

DOI: 10.1016/j.matcom.2020.02.015

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