Transient ratings of buried power cables. I. Historical perspective and mathematical model

Anders, G.J.; El‐Kady, M. A.

doi:10.1109/61.156972

Cited by 34 publications

(36 citation statements)

References 30 publications

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“…When the boundary temperature as well as the current were provided as solution conditions, the time-varying temperature θ c (t) could be obtained based on (6). As time goes by, the heat storage of thermal capacitance kept increasing, and a steady temperature distribution of the cable could be attained after a long enough period with constant current and ambient.…”

Section: Fem Simulation Methods Of Conductor Temperature Based On Difmentioning

confidence: 99%

“…The calculation result, however, usually exhibits errors because of the uncertainties of environmental parameters [4]. To solve this problem, many studies, including the modified thermal circuits and the numerical methods [5,6], have been undertaken. In numerical methods, the finite element method (FEM) is the most used method that has been applied to various laying environments.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Conductor-Temperature Calculations Based on Different Radial-Position-Temperature Detections for High-Voltage Power Cable

et al. 2018

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Abstract:In this paper, the calculation of the conductor temperature is related to the temperature sensor position in high-voltage power cables and four thermal circuits-based on the temperatures of insulation shield, the center of waterproof compound, the aluminum sheath, and the jacket surface are established to calculate the conductor temperature. To examine the effectiveness of conductor temperature calculations, simulation models based on flow characteristics of the air gap between the waterproof compound and the aluminum are built up, and thermocouples are placed at the four radial positions in a 110 kV cross-linked polyethylene (XLPE) insulated power cable to measure the temperatures of four positions. In measurements, six cases of current heating test under three laying environments, such as duct, water, and backfilled soil were carried out. Both errors of the conductor temperature calculation and the simulation based on the temperature of insulation shield were significantly smaller than others under all laying environments. It is the uncertainty of the thermal resistivity, together with the difference of the initial temperature of each radial position by the solar radiation, which led to the above results. The thermal capacitance of the air has little impact on errors. The thermal resistance of the air gap is the largest error source. Compromising the temperature-estimation accuracy and the insulation-damage risk, the waterproof compound is the recommended sensor position to improve the accuracy of conductor-temperature calculation. When the thermal resistances were calculated correctly, the aluminum sheath is also the recommended sensor position besides the waterproof compound.

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Section: Fem Simulation Methods Of Conductor Temperature Based On Difmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of Conductor-Temperature Calculations Based on Different Radial-Position-Temperature Detections for High-Voltage Power Cable

et al. 2018

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“…Based on the outcomes of all of the previous publications, Anders and ElKady [66] in 1992 introduced a thorough summary of the state of the art on the transient rating of buried power cable systems. The authors Weedy (1973) present an analytical method for solving the equations governing the equivalent lumped-parameter model of a power cable and compute the transient ratings at several radial positions in the cable.…”

Section: Autogrounddesignmentioning

confidence: 99%

Power Cable Rating Calculations - A Historical Perspective [History]

Holyk¹,

Anders²

2015

IEEE Ind. Appl. Mag.

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“…Thermal model of a cable system is shown in Figure 2. When the conductor is energized, heat loss (I 2 .R ac ) is generated within the cable [10,11]. And others are the dielectric losses in the insulation and losses in the metallic parts of the power cable.…”

Section: Basics Of Power Cable Ratingmentioning

confidence: 99%

“…When the analysis is started, Simulink model is operated and the results which are obtained using the principle of superposition are graphically viewed on the screen. Power cable temperature rises or decreases are depend on the combination of thermal capacitances and resistances formed by the model with step load function [11,14].…”

Section: Program Modulesmentioning

confidence: 99%

A Novel Gui Simulation Program Designed for Teaching of Underground Power Cables

Biçen

Aras

2009

2009 International Conference on Education Technology and Computer

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This paper presents a novel computer simulation program designed to aid teaching process in course of underground power cables for engineering students. The calculation of power cable ratings uses several different formulas and long analytical processes based on IEC 60287 and IEC 60853 standards. Therefore it is difficult to examine different variations such as power cable properties, installations and operation conditions, during the restrictive lesson time. For these reasons, a program has been developed to use for teaching process of the power cable course. The program allows the users to effectively learn the rating of underground power cables under different operation conditions with illustrative figures. The program details are presented and explained in this paper.

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Transient ratings of buried power cables. I. Historical perspective and mathematical model

Cited by 34 publications

References 30 publications

Comparison of Conductor-Temperature Calculations Based on Different Radial-Position-Temperature Detections for High-Voltage Power Cable

Comparison of Conductor-Temperature Calculations Based on Different Radial-Position-Temperature Detections for High-Voltage Power Cable

Power Cable Rating Calculations - A Historical Perspective [History]

A Novel Gui Simulation Program Designed for Teaching of Underground Power Cables

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