Journal ArticleDOI
The calculation of the temperature rise and load capability of cable systems
J. H. Neher,M. H. McGrath +1 more
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TLDR
In this paper, the steady-state temperature of electrical power cable was estimated using two-dimensional highly symmetric simplified calculations, which have formed the basis for many cable applicat ion guidelines and regulations.Abstract:
This Neher–McGrath paper describes a method of esti mating the steady-state temperature of electrical power cables for commonly encountered co nfigurations. By estimating the temperature of the cables, cables’ safe long-term c urrent-carrying capacity (termed “ampacity”) is determined. The paper described two-dimensional highly symmetric simplified calculations which have formed the basis for many cable applicat ion guidelines and regulations. Complex geometries, or configurations that require three-di mensional analysis of heat flow, may require more complex tools such as finite element analysis.read more
Citations
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Real-time monitoring and dynamic thermal rating of power transmission circuits
D.A. Douglass,A.-A. Edris +1 more
TL;DR: In this paper, a project undertaken by the Electric Power Research Institute (RP 3022-7) as part of its research on Flexible AC Transmission is described, which avoids dependence on temperature measurement, instead, calculating critical equipment component temperatures based solely on real-time weather and electrical current.
Journal ArticleDOI
Effects of Backfilling on Cable Ampacity Analyzed With the Finite Element Method
F. de Leon,George J. Anders +1 more
TL;DR: In this paper, a parametric study on how cable ampacity is affected by different configurations of the backfills is performed and the obtained results are compared with those of the IEC and IEEE standards (Neher-McGrath) and published extensions by El-Kady and Horrocks.
Journal ArticleDOI
Nonequilibrium water dynamics in the rhizosphere: How mucilage affects water flow in soils
TL;DR: In this article, a conceptual model of water flow in unsaturated soils mixed with mucilage is presented, where the authors postulate that mucilage exudation by roots attenuates plant water stress by modulating water content dynamics in the rhizosphere.
Journal ArticleDOI
Optimal Wind Farm Collector System Topology Design Considering Total Trenching Length
S. Dutta,Thomas J. Overbye +1 more
TL;DR: In this article, a graph-theoretic minimum spanning tree algorithm has been used as a starting algorithm, and improvements and modifications have been proposed to cater to the constraints and characteristics of a wind farm collector system.
Journal ArticleDOI
Temperature-Dependent Power Flow
TL;DR: In this paper, a temperature-dependent power flow algorithm is proposed, which integrates an estimate of branch temperatures and resistances with the conventional power flow equations to improve the accuracy of the power flow calculation.
References
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Journal ArticleDOI
Thermal Transients on Buried Cables
TL;DR: In this paper, the emergency rating of a cable is evaluated based on the severity of the abnormal transmission of the cable's transceivers, a subject which is receiving increasing attention because of its economic as well as technical importance.
Journal ArticleDOI
A-C Resistance of Segmental Cables in Steel Pipe
Louis Meyerhoff,G. S. Eager +1 more
TL;DR: In this article, the results of a study of the effective a-c resistance of a compact segmental conductor in sizes from 1,000, 000 to 2, 000, 000 circular mils, in air and in steel pipe, with equilateral triangular and cradle configurations, were reported.