Summary

The rapid integration of renewables and the drive towards net zero are accelerating transmission network upgrades, often within shared corridors that co-locate overhead lines, pipelines, and other utilities. While this approach optimises land use, it introduces electromagnetic interference (EMI) risks for metallic pipelines through capacitive, inductive, and conductive coupling. Unmanaged EMI can lead to AC corrosion, hazardous touch voltages, and operational safety concerns-issues amplified by voltage uprating and higher current flows.

This paper presents a holistic, lifecycle EMI management framework spanning planning, detailed design, and operation. The approach integrates early risk assessment, stakeholder collaboration, advanced modelling, mitigation strategies such as optimised conductor phasing and gradient control wires, and continuous monitoring using GPS-synchronised systems.

Practical case studies from Great Britain demonstrate how predictive analytics and proactive design ensure compliance, safeguard personnel, and support sustainable expansion of energy infrastructure.

Additional informations

Publication type Session Materials
Reference C4_11905_2026
Publication year
Publisher CIGRE
Country United Kingdom
Study committees
  • Power system technical performance (C4)
File size 1 MB
Price for non member 30 €
Price for member 30 €

Authors

NEGI Himanshu - Arcadis United Kingdom; MANGLAM Kumar - Arcadis United Kingdom; ALE Krishna - Arcadis United Kingdom; THOMPSON Colin - SSEN Transmission United Kingdom

Keywords

AC Corrosion, AC interference, Common utility corridor, Electromagnetic compatibility (EMC), Electromagnetic interference (EMI), Earthing systems, Low frequency induction (LFI), Metallic pipelines, Pipeline safety

Holistic Approach for Managing and Mitigating Interference on Metallic Pipelines in Shared Utility corridor