Determining the Induced Voltages, Generated By High-Voltage OPL, on a Pipeline in the Presence of Longitudinal and Transversal Unsymmetry

The routes of steel pipelines can pass along high-voltage OPL. Hazardous voltages can be induced on OPL structural parts due to OPL electromagnetic influence, thus creating health risks for the personnel servicing the pipeline. The highest voltages are observed in unsymmetrical modes when currents flow in the earth. Therefore, the problem of quantitative assessment of the induced voltages levels in the presence of longitudinal and transversal unsymmetry is urgent. To solve this problem, methods of simulating non-symmetrical modes of electrical energy systems (EES) were used; the methods were developed at the Irkutsk State Transport University and are based on the EES elements multiphase representation. The simulation was implemented using the Fazonord software application. The technique has been proposed, which allows to determine the induced voltage generated by high-voltage power lines on the parallel surface pipeline in unsymmetrical modes. The technique can be used to develop actions aimed at the protection of personnel operating pipelines in areas located in zones of electromagnetic effects of high-voltage OPL. The technique can be generalized in the event of non-parallel length of exposure of the pipeline and OPL. This work was financially supported by the grant “Improving the quality of electric energy and electromagnetic safety in railway power supply systems equipped with Smart Grid devices by applying methods and means of mathematical modeling based on phase coordinates”.