Photovoltaic Power Station Transmission Lines Electromagnetic Interference Analysis on Adjacent Natural Gas Pipelines

To evaluate the electromagnetic interference effects of transmission lines from solar photovoltaic power stations on adjacent buried oil and gas pipelines, this study takes a photovoltaic power station project in Colombia as a case study. A COMSOL model is developed, depicting overhead transmission lines crossing and running parallel to natural gas pipelines, to simulate and analyze the electromagnetic interference on the pipelines under both steady-state and fault conditions. The findings reveal that during steady-state operation, the peak AC voltage induced by the line"s rated current reaches 57 mV, significantly below the threshold limits set by standards such as CIGRE 290 and NACE SP21424, indicating an extremely low risk of AC corrosion. In fault conditions, both the peak voltage experienced by the pipeline and the dielectric strength of its coating remain within safe limits. This research offers valuable technical insights for the planning and safeguarding of projects involving parallel transmission lines from photovoltaic power stations and oil and gas pipelines.