Journal ArticleDOI
Underground cable specification advances and installation practices of the largest investor-owned utilities
J.H. Dudas,C. Fletcher +1 more
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TLDR
In this article, the technical specification trends for the design, installation, and use of 15 to 35 kV underground, insulated power cables by 60 of the largest investor-owned utilities were analyzed.Abstract:
This article analyzes the technical specification trends for the design, installation, and use of 15 to 35 kV underground, insulated power cables by 60 of the largest investor-owned utilities. A distinctive 10-year trend has been established in insulation material preferences, and interesting new data are provided on the cable replacement and rejuvenation practices of these utilities. The results provide practical information that will enable all electrical utilities to compare their medium voltage underground cable specifications and installation practices with those of the largest utilities in their industry.read more
Citations
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Journal ArticleDOI
Partial discharge current pulses in SF6 and the effect of superposition of their radiometric measurement
TL;DR: In this article, measurements of PD current pulses in gas insulated substations are presented for a point-plane configuration using an extremely wide bandwidth (13 GHz) measurement system, and the results show a considerable variation in pulse shape, with the minimum rise time measured being 35 ps.
Journal ArticleDOI
Molecular thermodynamics of water in direct-buried power cables
TL;DR: In this paper, the authors examined what actually happens to water within a direct-buried cable throughout the day and year as the cable temperature, the soil temperature, and the water content of the soil vary.
Journal ArticleDOI
A new sparse design method on phased array-based acoustic emission sensor for partial discharge detection
TL;DR: A quantitative method is proposed for evaluating the acoustic performance of a square PD ultrasonic array sensor and an optimal sparse structure is deduced, which shows that, for certain sparseness, the sensor with the optimal sparseructure exhibits superior positioning accuracy compared to that with a stochastic one.
Journal ArticleDOI
Design of UHF Antenna Sensor for Partial Discharge Detection in High Voltage S ubstation
TL;DR: In this article, the performance of an antipodal Vivaldi antenna (AVA) as the UHF sensor for the partial discharge detection was investigated and the simulation was carried out using CST Design StudioTM to analyze the optimal parameters of the antenna.
References
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Journal ArticleDOI
An Accelerated Life Test For Evaluating Power Cable Insulations
R. Lyle,J. W. Kirkland +1 more
TL;DR: In this article, a tree-retardant additive to thermo-plastic polyethylene is described, and the performance differences of two peroxide comipounds in crosslinked polyethylenes are compared.
Proceedings ArticleDOI
Performance of supersmooth, extra clean semiconductive shields in XLPE insulated power cables
TL;DR: Supersmooth (SS), extra-clean semiconductor shields have been demonstrated to be markedly improved in extruded surface smoothness and to contain a minimal level of ionic impurities as mentioned in this paper.
Journal ArticleDOI
EPR-based URD insulation: a question of confidence
TL;DR: In this paper, the authors examined the effects of thermal conductivity and thermal expansion on the performance of medium voltage (15-35 kV) underground residential distribution (URD) power cable and concluded that EPR has performance characteristics that permit cables to be used successfully under conditions of electrical stress, heat, and moisture.
Proceedings ArticleDOI
A survey of URD cable installed on rural electric systems and failures of that cable
J.C. Dedman,H.L. Bowles +1 more
TL;DR: In this paper, the cumulative total of failures, to date, of the cable installed in each year since 1970 was calculated and broken down according to the same variables, such as insulation material and thickness, jacketing, conductor type, and installation methods.
Journal ArticleDOI
Technical trends in medium voltage URD cable specifications
TL;DR: In this article, the authors discuss the significant technical changes that have taken place during this period and their impact on cable performance and the results of a 1983-1993 ten-year study of the major technical specification changes of the 25 largest investor-owned electric utility companies (IOUs) are presented.
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