Efficient FDTD simulation of fields in coaxial cables with multi-layered insulation partially formed by dispersive layers of extremely high permittivity

Jobava, R.; Heinrich, Ralf; Pommerenke, David; Kalkner, W.; Gheonjian, A.

doi:10.1109/diped.2002.1049181

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…In addition, the complex permittivity of the semi-conducting screens obtained through measurements is described in [4], which is represented by two Cole-Cole functions and some attached terms, whereas the complex permittivity of the dispersive layers is described by Debye model in [5]. No matter what form of the complex permittivity in the cable model is, it is hard to analysis in time domain.…”

Section: Shunt Admittance Y(ω)mentioning

confidence: 99%

“…The high frequency cable model that can be used over 100MHz is firstly described in [1], and more accurate model for extruded cables is developed in [3]. A few works on the characterization of semi-conducting layers in cables are carried out, and the complex permittivity of the dispersive layers is usually represented by Cole-Cole and Debye models [4], [5]. Although there is good performance between the high frequency cable model and the actual measurements, it is still a tough problem to solve these models in time domain.…”

Section: Introductionmentioning

confidence: 99%

“…Through which, the generic π circuit section of the power cable is proposed. Using the data from [4] and [5], high frequency pulse propagation is simulated by state-space method.…”

Section: Introductionmentioning

confidence: 99%

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Time Domain simulation of PD Propagation in XLPE Cables Considering Frequency Dependent Parameters

Zhang¹,

He²,

Lin³

et al. 2013

SGCE

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Partial discharge (PD) detection and location is of great significance for the power cable insulation condition monitoring, where analysis of the PD propagation is needed. This paper presents the single-core model of cross-linked polyethylene (XLPE) cable considering the influence of skin effect and semi-conducting screens. To analysis the propagation of PD pulse in time domain, the model firstly is rational approximated using vector fitting method. Based on the fitting results, the π section lumped parameters model is then proposed. Examples on two cables with different permittivity approximating forms of semiconducting screens are presented.

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Section: Shunt Admittance Y(ω)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Time Domain simulation of PD Propagation in XLPE Cables Considering Frequency Dependent Parameters

Zhang¹,

He²,

Lin³

et al. 2013

SGCE

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“…In high voltage cables, the interface between the conductors and electrical insulation is made of relatively thin semiconducting layers with extremely high permittivity, which is typically in the range of 20 to 4000 for frequencies from 0.1 to 1000 MHz [7,8].…”

Section: Introductionmentioning

confidence: 99%

Dimensional Effects on the Measurement of Permittivity of Semiconducting Materials Used in High Voltage XLPE Cables

Yang

Zhang

2008

International Journal of Emerging Electric Power Systems

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The intrinsic permittivity, not apparent permittivity, of semiconducting layers of high voltage cross-linked polyethylene (XLPE) cables imposes a significant influence on the design of partial discharge detecting sensors. It has extremely high permittivity, resulting in a dimensional effect, an embodiment of the difference between the intrinsic permittivity and apparent or measurable permittivity. To investigate this dimensional effect in semiconducting material, a mathematical model is set up in this paper for a capacitor with two rectangular-shaped electrodes in parallel, between which is inserted a semi-conducting sample. First, the expression of the electric field in the semiconducting material is worked out theoretically. Then, the measurable or apparent complex permittivity is expressed as a function of intrinsic permittivity, dimensions of the sample and frequency. Next, five blocks with different dimensions are introduced to study the dimensional effect. The numerical analysis demonstrates that above 10 MHz, samples with different dimensions result in different apparent permittivity or measurable permittivity if experiments are carried out for the samples with the assumed dimensions. This implies that dimensional effects should be considered when accurate intrinsic permittivity of the semiconducting materials is needed.

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“…The current interest paid to multilayered structures (in connection to its fabrication, and applications concerning superconductivity, skin effect, eddy currents, and photonic metamaterial structures) is witnessed in recent publications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Nonetheless, the research topic on multilayered radially inhomogeneous cylindrical structures has received scarce attention.…”

Section: Introductionmentioning

confidence: 99%

A Matrix Approach for the Evaluation of the Internal Impedance of Multilayered Cylindrical Structures

Faria¹

2011

PIER B

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Abstract-A matrix technique for the computation of the perunit-length internal impedance of radially inhomogeneous cylindrical structures is presented. The cylindrical structure is conceptually divided into a number of layers, each layer being characterized by its constitutive parameters, conductivity, permeability, and permittivity. Within this general framework, compound conductors, compound capacitors, compound magnetic cores, or any other compound structures resulting from a mix of the above, can be analyzed by using the very same tool. The developed software program, MLCS, which implements the mentioned matrix technique, also permits the evaluation of the electric and magnetic fields intensity at the layers' interfaces. The MLCS program is validated by using several application examples.

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Efficient FDTD simulation of fields in coaxial cables with multi-layered insulation partially formed by dispersive layers of extremely high permittivity

Cited by 8 publications

References 4 publications

Time Domain simulation of PD Propagation in XLPE Cables Considering Frequency Dependent Parameters

Time Domain simulation of PD Propagation in XLPE Cables Considering Frequency Dependent Parameters

Dimensional Effects on the Measurement of Permittivity of Semiconducting Materials Used in High Voltage XLPE Cables

A Matrix Approach for the Evaluation of the Internal Impedance of Multilayered Cylindrical Structures

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