Case studies on electromagnetic interference between HVPL and buried pipelines

Electromagnetic interferences between an existing gas pipeline and a newly designed high voltage power line sharing the same right-of-way, are evaluated. Induced voltages are computed for different steady state power line operating conditions, using dedicated professional software. To increase results accuracy, soil resistivity measurements were made along distribution corridor length and the appropriate equivalent soil model is determined. Obtained induced AC voltages values are compared to international regulation for identification of potentially hazardous zones regarding pipeline corrosion. Different mitigation techniques are tested and proposed.