Quantification of induced effects on T-pylon transmission lines

Justo de Araújo, Anderson Ricardo, Mokhtari, Mehrdad, Albano, Maurizio ORCID: https://orcid.org/0000-0002-5486-4299, Clark, David ORCID: https://orcid.org/0000-0002-1090-2361, Robson, Stephen ORCID: https://orcid.org/0000-0003-3156-1487, Shaban, Muhammad, Guo, Dongsheng and Haddad, Abderrahmane 2025. Quantification of induced effects on T-pylon transmission lines. Presented at: UPEC 2024, Cardiff, Wales, 02-06 September 2024. Proceedings 59th International Universities Power Engineering Conference (UPEC). IEEE, 10.1109/upec61344.2024.10892566

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Abstract

Induced voltages and currents on the non-energized circuit of a transmission line occur due to the electromagnetic field generated by the energized side of a double-circuit transmission line. These induced effects can produce considerably high currents and voltages along the line length, which might affect the safety of workers during maintenance operations. This paper investigates the steady-state currents on the earth wires, phase conductors, and tower base of a double-circuit 400-kV transmission line with a length of 13.2 km using the T-pylon configuration. For this purpose, it is assumed that one circuit is fully energized by a 3-phase sinusoidal voltage source and its rated current, while the other is non-energized, and earthed at both terminal substations. The software ATP-EMTP® is adopted for the power system modeling and numerical simulations. Results demonstrated that the induced currents on the earth wires, phase conductors, and tower base vary significantly along the length of the line. Maximum current values (rms) of 137 A and 23 A were computed on the earth wires of the energized and non-energized side, respectively.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Date Type:	Published Online
Status:	In Press
Schools:	Schools > Engineering
Publisher:	IEEE
ISBN:	979-8-3503-7973-0
Last Modified:	10 Mar 2025 13:00
URI:	https://orca.cardiff.ac.uk/id/eprint/176766

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