Field and ion interactions of hybrid AC/DC transmission lines

Maruvada, P. Sarma; Drogi, S.

doi:10.1109/61.193899

Cited by 58 publications

(30 citation statements)

References 7 publications

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“…It is the possible injection of DC ion currents into the railway conductors. [16]. Last but not least is the possible interaction due to direct galvanic connection of grounded conductors and metallic parts.…”

Section: Mechanism Of Interactionmentioning

confidence: 99%

EMC Problems caused by Combinations of EHV Transmission Lines and Electrified Railway Lines

Novitskiy¹,

Konotop²,

Westermann³

2024

RE&PQJ

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Abstract. The percentage of electricity produced by renewable energy sources grows rapidly during last years. But high-power renewable energy sources like offshore or onshore wind farms in coastal regions are located very often far from consumers. The task of the energy transport over long distances becomes more and more important. Due to the difficulties finding new corridors for the extra high voltage (EHV) transmission lines in densely populated countries with developed infrastructure is often recommended to combine the new transmission line with other infrastructure objects like railways, highways and other transmission lines. One of theoretical possibilities is the use of common pylons for the installation of a new EHV transmission line together with catenary of electrified railway lines. Another one is the laying of HVDC cable parallel to the rail line. The proximity of different current feeding systems causes the electromagnetic interaction between transmission line and catenary. These interferences can disturb the operation of both systems. On the base of mathematical modelling of electromagnetic interferences between transmission lines and catenary the interaction between both systems is considered in the offered paper.

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Section: Mechanism Of Interactionmentioning

confidence: 99%

EMC Problems caused by Combinations of EHV Transmission Lines and Electrified Railway Lines

Novitskiy¹,

Konotop²,

Westermann³

2024

RE&PQJ

View full text Add to dashboard Cite

show abstract

“…Within the FEM, is determined in order to satisfy (10). Thus, and are not well defined on the interior element edges (but jump from one side to the other across the edges).…”

Section: Appendix Stabilization and Implementing Boundary Conditionsmentioning

confidence: 99%

“…In [9] and [10], calculations to approximately determine the fields on and ion currents onto the ground below a hybrid line [9], [10] as well as the dc current component in the ac circuit [10] were presented for different hybrid line designs. Arranging the ac beneath the dc circuit shields the ground below the line from electric dc fields and ion currents [2], [9], [10], while ac electric fields [2] and the trajectories of dc ions [10] do not seem to be affected by hybrid interactions.…”

Section: Introductionmentioning

confidence: 99%

“…Arranging the ac beneath the dc circuit shields the ground below the line from electric dc fields and ion currents [2], [9], [10], while ac electric fields [2] and the trajectories of dc ions [10] do not seem to be affected by hybrid interactions.…”

Section: Introductionmentioning

confidence: 99%

“…The widely used condition fixes surface gradients at the corona onset values [10]- [13], [15]- [18]. However, defining one onset gradient for the entire conductor might be questionable at times, as corona might not set in homogeneously along the entire conductor with fields above that level.…”

Section: Introductionmentioning

confidence: 99%

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