Cable ampacity calculation in heterogenous soil using finite element analysis

Amin Mahmoudi, Solmaz Kahourzade, David S.S. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This paper presents a new approach for the determination of underground cable ampacity that considers natural convection of air inside a conduit and heterogeneous soil around the conduit, and compares calculated results with conduit-less considerations. It shows how ampacity of a buried cable is affected by thickness of the soil above it, and by the surrounding soil's heterogeneity and thermo-physical characteristic. Commercial ANSYS software for three-dimensional simulation of a 400kV polyethylene-paper cables with copper segments is used. The investigation yields numerical solutions for Fourier conducting heat transfer, continuity, energy, and momentum equations. Poor convection of air in conduit is shown to result in cable threshold temperature to be greater than that in conduit-less, other conditions being similar. Also results show that the longer the conduit, the lesser the acceptable ampacity. The proposed method gives criterion and flexibility to change strategy for situations which are not discussed in standard literatures on cable routing.

Original languageEnglish
Title of host publication2011 5th International Power Engineering and Optimization Conference, PEOCO 2011 - Program and Abstracts
Pages416-421
Number of pages6
DOIs
Publication statusPublished - 6 Sep 2011
Externally publishedYes
Event2011 5th International Power Engineering and Optimization Conference, PEOCO 2011 - Shah Alam, Selangor, Malaysia
Duration: 6 Jun 20117 Jun 2011

Publication series

Name2011 5th International Power Engineering and Optimization Conference, PEOCO 2011 - Program and Abstracts

Conference

Conference2011 5th International Power Engineering and Optimization Conference, PEOCO 2011
CountryMalaysia
CityShah Alam, Selangor
Period6/06/117/06/11

Keywords

  • Ampacity
  • ANSYS
  • Finite Element Method
  • Underground Cables

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  • Cite this

    Mahmoudi, A., Kahourzade, S., & Lee, D. S. S. (2011). Cable ampacity calculation in heterogenous soil using finite element analysis. In 2011 5th International Power Engineering and Optimization Conference, PEOCO 2011 - Program and Abstracts (pp. 416-421). [5970401] (2011 5th International Power Engineering and Optimization Conference, PEOCO 2011 - Program and Abstracts). https://doi.org/10.1109/PEOCO.2011.5970401