Spatial analysis of thermal aging of overhead power transmission lines

• Author / Creator

  Bhuiyan, Md. Mafijul Islam

• To meet increasing power needs of industrialized and urbanized consumers, power transmission companies are pressed to elevate the transmitted load in overhead power transmission lines. Increased loads impose thermal and mechanical stress, causing risks of transmission reliability. These risks can be mitigated by developing computational diagnostic tools for better scheduling of line inspections and maintenance.
  The thesis introduces a novel methodology for spatial analysis of conductor thermal aging based on historical weather data that can be performed at three different levels: point, line, and area. By utilizing this paradigm, the thermal state of an energized transmission
  line can be visualized, initiating a new dimension in thermal aging research.
  An advanced model for dynamic re-rating of existing transmission lines is introduced in the thesis to reduce the risk of sag. The performance of the thermal aging and re-rating models is examined using simulation data from the BC Hydro power transmission network.

• Subjects / Keywords

  • Overhead electric lines--Fault location
  • Powerline ampacity
  • Spatial analysis (Statistics)

• Graduation date

  Fall 2011

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3S081

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.