Experimental Evaluation of Available Computational Methods for Eddy Current and Hysteresis Losses for Cables Installed in Steel Pipes

Haowie Lu, Abdullah Bokhari, Tianqi Hong, Francisco De Leon

Research output: Contribution to journalArticle

Abstract

This paper presents laboratory tests to evaluate the existing methods used to compute the eddy current and hysteresis losses produced by cables installed in steel pipes. The influence of the casing losses on conductor temperature is studied. The assumptions made by Moutassem and Anders are validated experimentally. The paper also shows a defect with the IEC Standard calculations of the pipe loss factor and thermal resistance. Finite element simulations are used to compare the laboratory experiments and illustrate the loss distribution in the casing. The application range of the available methods is established from the FEM models. As illustration, the proposed correlations are used for the rating of cables in trefoil or cradled formations inside a cylindrical steel pipe.

Original languageEnglish (US)
JournalIEEE Transactions on Power Delivery
DOIs
StateAccepted/In press - Oct 25 2017

Fingerprint

Steel pipe
Computational methods
Eddy currents
Hysteresis
Cables
Oil well casings
Heat resistance
Pipe
Finite element method
Defects
Experiments
Temperature

Keywords

  • Ampacity
  • cables in pipes
  • eddy current losses
  • hysteresis losses
  • magnetic losses
  • steel pipe losses
  • thermal rating

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

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abstract = "This paper presents laboratory tests to evaluate the existing methods used to compute the eddy current and hysteresis losses produced by cables installed in steel pipes. The influence of the casing losses on conductor temperature is studied. The assumptions made by Moutassem and Anders are validated experimentally. The paper also shows a defect with the IEC Standard calculations of the pipe loss factor and thermal resistance. Finite element simulations are used to compare the laboratory experiments and illustrate the loss distribution in the casing. The application range of the available methods is established from the FEM models. As illustration, the proposed correlations are used for the rating of cables in trefoil or cradled formations inside a cylindrical steel pipe.",
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