TITLE:
A Review of Medium Voltage Single-Core Cable Armouring, Induced Currents and Losses
AUTHORS:
Parya Zamani, Amir Foomezhi, Sobhan Ghorbani Nohooji
KEYWORDS:
Single-Core Cable, Armour, Armour Loss, Eddy Current, Circulating Current, Hysteresis Losses
JOURNAL NAME:
Energy and Power Engineering,
Vol.13 No.7,
July
22,
2021
ABSTRACT: Insulated underground cables have the potential to
reduce power outages, maintenance costs, and transmission losses compared to
overhead lines. On the other hand, they are
exposed to several risks and physical damages, since they are buried in the
ground. Though the cables are armoured in order to provide mechanical protection and achieve tensile strength,
and also to provide effective conductance of earth fault currents. The main purpose of
this paper is to introduce insulated underground cables, armouring process, and
to analyze the induced currents in metallic parts such as sheath and armour that causeohmic losses which are categorized
mainly in two groups as circulating current and eddy current. This paper
presents a review on analytical techniques used to analyze the effect of
magnetic fields, andcalculate the losses in the armour of the
cables, besides providing the strategies and solutions used for armour loss
reduction.