Electric-Field Analysis of Spacer Cable Systems for Compact Overhead Distribution Lines

Ramírez-Vázquez, Isaías; Espino-Cortés, Fermín P.

doi:10.1109/tpwrd.2012.2209186

Cited by 12 publications

(6 citation statements)

References 9 publications

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“…With this configuration the maximum electric field appears in the zone of the ground wire, as reported in [10], [12]. A similar result is obtained when the surface of the spacer is simulated with a pollutant layer ( Figure 10); the maximum electric field, presented in Figure 9, is well below the maximum electric field in Figure 8, where the three-phase instantaneous voltage is considered.…”

Section: Electric Field Distribution On Compatibility Testssupporting

confidence: 79%

“…This wedge effect will initiate surface discharges, and the damage that these discharges produce is used as a reference to compare the performance of different materials and designs. Low-quality materials used in CC and spacers can be detected during the compatibility test [9]; however, if the problems remain under highly polluted conditions, it is considered that the only solution will be to further increase the erosion and tracking resistance of the materials [10]. A recent work has shown that the PD erosion resistance of XLPE can be significantly improved by adding surface-modified nano fumed silica [13]; this can be a promising solution.…”

Section: Discussionmentioning

confidence: 99%

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Performance of a spacer cable system under polluted conditions

Espino-Cortés

Ramírez-Vázquez

Gómez

et al. 2014

IEEE Electr. Insul. Mag.

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Section: Electric Field Distribution On Compatibility Testssupporting

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Performance of a spacer cable system under polluted conditions

Espino-Cortés

Ramírez-Vázquez

Gómez

et al. 2014

IEEE Electr. Insul. Mag.

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“…If the tracking and erosion resistance of the materials can be improved without increasing significantly the relative permittivity [13], the SCS should have a better performance. In systems where CC's are used with ceramic insulators, the high permittivity of the insulator will increase the electric field around the contact area with the cable.…”

Section: Electric Field Distribution For Different Compatibility mentioning

confidence: 99%

Three dimensional electric field analysis in spacer cable systems

Espino-Cortés

Vazquez

2012

2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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In this work, three dimensional finite element modeling is used to compute the electric field distribution on a spacer cable system. The electric field for different compatibility test configurations is computed in order to show the differences observed between the use of single phase and three phase power supply to energize the test setup. According to the simulation results, the electric field enhancement seen around the seat area of the spacer in contact with the cable can be reduced by reducing the dielectric permittivity of the materials; however, materials with low permittivity can be difficult to obtain for this application. It is considered that, instead of trying to reduce and find exact match of materials permittivity, tracking resistance must be improved as much as possible in order to extend the service life of the system.

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“…The compact electricity distribution network has been widely used in Brazil due to its advantages in terms of potential isolation [3], as the network is semi‐isolated, which results in greater security for both people and the distribution system itself. Another advantage of the compact network is the low visual impact as it takes up less space in the distribution system [48].…”

Section: Compact Electric Distribution Networkmentioning

confidence: 99%

Optimal design of electrical power distribution grid spacers using finite element method

Stefenon

Seman

Ovejero

et al. 2022

IET Generation Trans & Dist

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Spacers in the compact power distribution network are essential components for the support, organization, and spacing of conductors. To improve the reliability of these components and have an optimized network design, it is necessary to evaluate the performance of the variation of their geometric parameters. The analysis of these components is fundamental, considering that there are several models available that are validated by the electric power utilities. Due to the various possible design shapes, it is necessary to use an optimized model to reduce the electric potential located in specific sites, improving the reliability in the component, as the higher electrical potential results in a greater chance of failure to occur. The finite element method (FEM) stands out for evaluating the distribution of electrical potential. In this paper, an FEM is used to evaluate variations in vertical and horizontal dimensions in spacers used in the 13.8 kV power grid. The models are analyzed in relation to their behavior regarding the potential distribution on their surface. From the results of these variations, the model is optimized by means of a mixed-integer linear problem (MILP), replacing the FEM output with a ReLU network substitute model, to obtain a spacer with more efficiency to be used in semi-insulated distribution networks.

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Electric-Field Analysis of Spacer Cable Systems for Compact Overhead Distribution Lines

Cited by 12 publications

References 9 publications

Performance of a spacer cable system under polluted conditions

Performance of a spacer cable system under polluted conditions

Three dimensional electric field analysis in spacer cable systems

Optimal design of electrical power distribution grid spacers using finite element method

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