Modeling of skin and proximity effects in multi-bundle cable lines

Cywiński, Artur; Chwastek, Krzysztof

doi:10.1109/paee.2019.8788986

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…Table 3 lists the RMS current values in individual strands after the first iteration and in the steady state. Our previous paper [58] pointed out that the three-phase setup of multi-bundle cable lines (six strands per phase), consisting of four rings set apart by a 30 cm distance, cf. Figure 19, offered favorable heat exchange conditions contrary to the same setup, but when the rings touch each other.…”

Section: Determination Of Free Convection Coefficient and Modelingmentioning

confidence: 99%

A Multiphysics Analysis of Coupled Electromagnetic-Thermal Phenomena in Cable Lines

Cywiński¹,

Chwastek

2021

Energies

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The paper is focused on numerical modeling of multi-strand cable lines placed in free air. Modeling is carried out within the framework of the so-called multi-physics approach using commercial software. The paper describes in detail the steps undertaken to develop realistic, reliable numerical models of power engineering cables, taking into account their geometries and heat exchange conditions. The results might be of interest to the designers of multi-strand cable systems.

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Section: Determination Of Free Convection Coefficient and Modelingmentioning

confidence: 99%

A Multiphysics Analysis of Coupled Electromagnetic-Thermal Phenomena in Cable Lines

Cywiński¹,

Chwastek

2021

Energies

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“…In order to deal with the current distribution installed on a metal tray, a general method for calculating the current distribution in a multiphase cable distribution system is developed [16]. The skin and proximity phenomena cannot be neglected as doing so will affect the current density distribution in multi-strand cables significantly [17].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Methods for Suppressing Circulating Current in Metal Sheath of Cables Connected in Parallel

Zou

Yuan

et al. 2023

Energies

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The number of high-voltage parallel cables is rapidly increasing. The alternating magnetic field generated by the working current of power cable cores induces voltage in the adjacent metal sheath; if the sheath and earth form a circuit, the metal sheath will create a circulating current, resulting in a reduction in the load capacity of power cable and the life of cable insulation. This paper uses MATLAB to construct a model for calculating the circulating current of cables connected in parallel in the same phase, and the effects of cable arrangement, phase sequence, and loop distance of cables connected in parallel on the sheath circulating current are investigated. The induced voltage in power cable sheaths is decomposed into two components, i.e., the component resulting from the core current and the component resulting from the metal sheath. Two new sheath connection methods are proposed to suppress the sheath circulating current. Compared with traditional cross-connection grounding, the proposed methods can reduce the coupling degree between loops, thus decreasing the induced voltage and circulating current. The different grounding methods of the sheath are modeled in the environment of an electromagnetic transient program (EMTP), and the sheath circulating current is simulated and compared with the conventional cross-connection grounding method. In the asymmetric arrangement, the proposed series connection method can reduce the sheath circulating current by at least 50%; however, its increases the sheath circulating current in the symmetric arrangement.

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“…Many studies have discussed the effects of non-sinusoidal currents on the parameters of parallel cables with consideration of the AC resistance, proximity, skin effect, and eddy currents [15,16]. Furthermore, [17,18] investigated the power loss simulation in low-voltage cables due to non-sinusoidal loads.…”

Section: Introductionmentioning

confidence: 99%

The effect of nonlinear loads on the underground distribution cables: a case study

Elsharkawy

Osman

Salem

2022

Journal of Electrical Systems and Inf Technol

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Nonlinear loads have become more prevalent in all applications, including computers, transformers, and adjustable speed drives. The harmonic level of the underground distribution cables rises as a result of these loads. As a result, the cable layers' temperatures are affected by the harmonic levels. The purpose of this paper is to calculate the temperature distribution of a cable conductor and the soil around it under cyclic loading conditions, including the impact of linear and nonlinear loads. The IEC 60,853-2 standard is used to consider the thermal model of an underground cable. The finite element method is investigated to obtain a heat map of the cable layers and their surrounding soil. In this study, the small-scale model was constructed in the laboratory. The cable is installed using two methods at the same loading conditions. The heat transfer in the four-core low-voltage cable installation is measured. Furthermore, total harmonic distortion is measured using a Fluke 125 scope meter. The experimental results from the laboratory model proved that there was an extreme increase in the temperature of cable layers when the cable was installed inside the polyvinyl chloride duct in the soil compared with its installation directly buried in the soil. The results of the experimental tests are compared with simulation results.

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Modeling of skin and proximity effects in multi-bundle cable lines

Cited by 4 publications

References 15 publications

A Multiphysics Analysis of Coupled Electromagnetic-Thermal Phenomena in Cable Lines

A Multiphysics Analysis of Coupled Electromagnetic-Thermal Phenomena in Cable Lines

Comparison of Methods for Suppressing Circulating Current in Metal Sheath of Cables Connected in Parallel

The effect of nonlinear loads on the underground distribution cables: a case study

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