Evaluation of induced AC voltages in underground metallic pipeline

Abstract

Purpose

The purpose of this paper is to make a study of electromagnetic interference between electrical power lines and nearby underground metallic pipelines.

Design/methodology/approach

The equivalent electrical circuit of the studied electromagnetic interference problem between electrical power lines and nearby metallic pipelines is created and solved using a loop currents technique based on a hybrid method. The used circuit solving technique was implemented in a software application developed by the authors.

Findings

The authors have identified the influence of phase sequence on induced voltage level in an underground pipeline for a double circuit electrical power line. Also the effect of different normal operation and phase to earth fault currents have been revealed.

Practical implications

The study has been made through a research project with the Romanian gas transportation company, in order to find the proper protection techniques for underground metallic pipelines.

Originality/value

The paper reveals the influence of some electrical and geometrical parameters that have not been studied in detail previously.

Citation

Micu, D.D., Czumbil, L., Christoforidis, G.C., Ceclan, A. and Şteţ, D. (2012), "Evaluation of induced AC voltages in underground metallic pipeline", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 31 No. 4, pp. 1133-1143. https://doi.org/10.1108/03321641211227375