Study of the influence of nonlinear parameters on the efficiency of a resistive field grading tube for cable termination

Boucher, Sarah; Chambard, Romain; Hassanzadeh, Manouchehr; Castellon, J.; Metz, Renaud

doi:10.1109/tdei.2018.007329

Cited by 7 publications

(12 citation statements)

References 18 publications

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“…In general, nonlinear resistive field-grading materials have a field-dependent conductivity,

, which increases strongly from a low conductivity value,

, to a high value in a narrow field region

near

[ 20 , 23 , 35 ]. The value of the switching field (

) indicates where field grading becomes active [ 35 ].…”

Section: Electric-field Grading In Hv Applicationsmentioning

confidence: 99%

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Nonlinear Electrical Conduction in Polymer Composites for Field Grading in High-Voltage Applications: A Review

et al. 2021

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Applications of polymeric materials in electrical engineering increasingly require improvements in operating voltages, performance, reliability, and size reduction. However, the resulting increase on the electric field in electrical systems can prevent achieving these goals. Polymer composites, functionalized with conductive or semiconductive particles, can allow us to reduce the electric field, thus grading the field within the system. In this paper, a comprehensive review of field-grading materials, their properties, and recent developments and applications is provided to realize high-performance high-voltage engineering applications.

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“…In general, nonlinear resistive field-grading materials have a field-dependent conductivity,

, which increases strongly from a low conductivity value,

, to a high value in a narrow field region

near

[ 20 , 23 , 35 ]. The value of the switching field (

) indicates where field grading becomes active [ 35 ].…”

Section: Electric-field Grading In Hv Applicationsmentioning

confidence: 99%

“…This level does not change even at higher voltages ( Figure 4 b, curve c). Boucher et al [ 23 ] studied by finite element simulation a shielded cable termination. The nonlinear material tube was applied at the end of the shield as an extension and on the insulation as a sleeve.…”

Section: Current Applications Of Nonlinear Polymer Composites In Hv Engineeringmentioning

confidence: 99%

Nonlinear Electrical Conduction in Polymer Composites for Field Grading in High-Voltage Applications: A Review

et al. 2021

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“…Considering the objectionable deviations in the field utilization of the proposed FGIL due to stranded conductors, irregularity suppression essentially needs to be done in order to acquire the required FUF. A probable solution could be the implementation of a silicon carbide (SiC)-impregnated polyester-based SCF of 0.1-0.4 mm thickness on the stranded conductor in order to acquire a relatively smoother conductor profile [39,66,67]. The implementation of such film-coated stranded conductors in gas-insulated equipment necessitates detailed electrostatic and dielectric appraisal, as no published research regarding the implementation of field-graded stranded conductors in gas-insulated equipment exists to date.…”

Section: Contour Irregularity Suppression Of Stranded Conductormentioning

confidence: 99%

Field Optimization and Electrostatic Stress Reduction of Proposed Conductor Scheme for Pliable Gas-Insulated Transmission Lines

et al. 2019

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The implementation of stranded conductors in flexible gas-insulated transmission lines (FGILs) requires field intensity minimization as well as field irregularity suppression in order to avoid dielectric breakdown. Moreover, the interdependence of enclosure and conductor sizes of FGILs regarding electrostatic aspects necessitate critical consideration of their dimensional specifications. In this research, geometric and electrostatic field optimization for FGILs regarding stranded conductors is performed. In addition, the effect of conductor irregularity on field dispersion is analyzed, and a semiconducting film (SCF)-coated stranded conductor is proposed as a potential candidate for FGILs. Considering the performed optimized design, an 11 kV scaled-down model of a 132-kV FGIL was also fabricated in order to practically analyze its electrostatic and dielectric performances regarding simple and SCF-coated stranded conductors. Simulation and experimental investigations revealed that the SCF-coated stranded conductor significantly minimized the field irregularity of the FGIL along with improving in its dielectric breakdown characteristics.

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“…Next, the proposed method is applied to the optimisation of the permittivity distribution in a SCT used in cable termination [7][8][9][10][11]. The dimensions of the cable termination are taken from Nikolajevic et al [11] and are shown in Table 2.…”

Section: Optimisation Of the Permittivity Distribution In A Stress Comentioning

confidence: 99%

“…Several techniques are in vogue, e.g. electrode shape modification (geometric control) [5], use of very high permittivity material (refractive control) [6,7] or use of material with relatively high conductivity (impedance control) [8][9][10][11]. However, all such methods have drawbacks.…”

Section: Introductionmentioning

confidence: 99%

2D spatial optimisation of functionally graded materials used as insulators for field stress control

Qasim

Gupta

2019

IET Science, Measurement & Technology

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Study of the influence of nonlinear parameters on the efficiency of a resistive field grading tube for cable termination

Cited by 7 publications

References 18 publications

Nonlinear Electrical Conduction in Polymer Composites for Field Grading in High-Voltage Applications: A Review

Nonlinear Electrical Conduction in Polymer Composites for Field Grading in High-Voltage Applications: A Review

Field Optimization and Electrostatic Stress Reduction of Proposed Conductor Scheme for Pliable Gas-Insulated Transmission Lines

2D spatial optimisation of functionally graded materials used as insulators for field stress control

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