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10111 Influences of Pipeline Electric Properties on AC Interference

Picture for 10111 Influences of Pipeline Electric Properties on AC Interference
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Product Number: 51300-10111-SG
ISBN: 10111 2010 CP
Author: L. Trichtchenko
Publication Date: 2010
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Induction in the pipeline due to AC interference is a phenomenon that should be taken into account for planning and mitigating purposes. To evaluate the electric currents and voltages produced in the pipeline due to proximity of high voltage power lines, Transmission Line Theory (TLl) is often applied and a number of software packages using TLl has been developed.

In this paper the analytical approach to the problem of the AC induction in an infinitely long mUltilayered cylinder representing the pipeline has been used to evaluate effects of the different electromagnetic parameters of the pipeline and surrounding medium. Also, approximate formulas for pipeline steel impedances and coating admittances used in industrial software have been compared with the exact formulas and the results of the comparison are presented.

Keywords: AC induction, AC interference, Maxwell equations, pipeline impedance
Induction in the pipeline due to AC interference is a phenomenon that should be taken into account for planning and mitigating purposes. To evaluate the electric currents and voltages produced in the pipeline due to proximity of high voltage power lines, Transmission Line Theory (TLl) is often applied and a number of software packages using TLl has been developed.

In this paper the analytical approach to the problem of the AC induction in an infinitely long mUltilayered cylinder representing the pipeline has been used to evaluate effects of the different electromagnetic parameters of the pipeline and surrounding medium. Also, approximate formulas for pipeline steel impedances and coating admittances used in industrial software have been compared with the exact formulas and the results of the comparison are presented.

Keywords: AC induction, AC interference, Maxwell equations, pipeline impedance
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