Current Distribution and Losses of Grouped Underground Cables

Novák, B.; Koller, L.

doi:10.1109/tpwrd.2011.2104980

Cited by 11 publications

(6 citation statements)

References 2 publications

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“…Novak et al established a grouped single-core underground cable model considering both ends of the twisted wire layer connected to the shield layer. They found that the induced current was an important factor causing current loss (Novak and Koller, 2011). Mohamed et al effectively reduced the maximum conductor temperature and surface flux density by installing a metal plate above an underground power cable line (Mohamed et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

A plasma energy deposition based model for power cable bellows discharge

Wang

Yang

et al. 2023

COMPEL

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Purpose This paper aims at building a discharge model for the power cable bellows based on plasma energy deposition and analyzing the discharge ablation problem. Design/methodology/approach Aiming at the multiphysical mechanism of the discharge ablation process, a multiphysical field model based on plasma energy deposition is established to analyze the discharge characteristics of the power cable bellows. The electrostatic field, plasma characteristics, energy deposition and temperature field are analyzed. The discharge experiment is also carried out for result validation. Findings The physical mechanism of the bellows ablative effect caused by partial discharge is studied. The results show that the electric field intensity between the aluminum sheath and the buffer layer easily exceeds the pressure resistance value of air breakdown. On the plasma surface of the buffer layer, the electron density is about 4 × 1,019/m3, and the average temperature of electrons is about 3.5 eV. The energy deposition analysis using the Monte Carlo method shows that the electron range in the plasma is very short. The release will complete within 10 nm, and it only takes 0.1 s to increase the maximum temperature of the buffer layer to more than 1,000 K, thus causing various thermal effects. Originality/value Its physical process involves the distortion of electric field, formation of plasma, energy deposition of electrons, and abrupt change of temperature field.

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Section: Introductionmentioning

confidence: 99%

A plasma energy deposition based model for power cable bellows discharge

Wang

Yang

et al. 2023

COMPEL

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“…Energy losses in cable lines depend on the nominal cross-section of the conductor and of the metallic screen, way of laying the cable (flat or trefoil formation), but also to a large extent, on the connection and earthing system of the cables' metallic screens [32,34,38,52]. The greater the distance between single-core cables, regardless of the thickness of individual conductors, the greater losses in these cable systems are observed, hence much greater losses will occur in the case of cables in a flat formation than in a trefoil formation [20,37].…”

Section: Introductionmentioning

confidence: 99%

“…The greater the distance between single-core cables, regardless of the thickness of individual conductors, the greater losses in these cable systems are observed, hence much greater losses will occur in the case of cables in a flat formation than in a trefoil formation [20,37]. If there is more than one cable system, for example two three-phase cables side by side, energy losses will also depend on the phase sequence in individual single-phase cables [38].…”

Section: Introductionmentioning

confidence: 99%

Energy losses’ reduction in metallic screens of MV cable power lines and busbar bridges composed of single-core cables

Andruszkiewicz¹,

Lorenc²,

Łowczowski³

et al. 2020

Eksploatacja i Niezawodność – Maintenance and Reliability

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“…Standard IEC 60287 gives a theoretical method to calculate the current distribution between parallel cables with ignoring the proximity effects [3]. In [4], the authors investigate the cables currents and power losses division based on the standard method and FEM models in the cables under sinusoidal current. A method is used to determine the current of parallel cables using source voltage in sinusoidal current in [5].…”

Section: Introductionmentioning

confidence: 99%