Electromagnetic Interferences Between Power Lines and Pipelines Using EMTP Techniques

This work presents an implementation of a circuit model based on the Alternative Transients Program (ATP), intended for the study of electromagnetic interferences involving transmission lines and pipelines. The proposed model differs from the studies commonly reported in the literature because it is able to effectively determine the induced voltages in the target system accounting for complex approximation geometries, which can be composed of crossings, parallelisms and oblique sections between the interfering and interfered systems. To validate the implementation, a case of crossing between a 115 kV transmission line and a pipeline is simulated, and results are compared with those of an industry-standard software. Results show that the proposed approach is effective handling complex geometries, commonly verified in real industry electromanetic interference cases, presenting accurate results within a margin of less than 5%. Finally, a study is carried out with different grounding resistances at the pipeline extremities, aiming to mitigate the risks caused by induced voltages and meet standard safety criteria.