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Title: An experimental evaluation of a thermal line uprating by conductor temperature and weather monitoring

Abstract

Conductor temperature monitors were installed on a four mile long section of 115 kV transmission line and served as the basis for the dynamic thermal rating of the line during June and December of 1985. A method of detecting temperature monitor measuring errors is described and a correction method suggested to correct the thermal rating of the line. Of the four spans containing temperature monitors, no one span was consistently the hottest (i.e., the ''critical span'') but for each month, one span was hottest more than half the time. By accounting for variations in span orientation along the test line section, it was found that the weather data from a single weather station as far as 20 miles away could be used to predict the statistical distribution of thermal ratings for the test line. The dynamic thermal rating of the test line was above the line's static rating some 80% to 90% of the time being 15% to 30% higher, 50% of the time. The correlation of peak contingency loading and peak dynamic thermal rating is identified as a major factor in evaluating the use of dynamic rating methods in line uprating.

Authors:
 [1];  [2]
  1. Rochester Gas and Electric, Rochester, NY (US)
  2. Power Technologies, Inc., Schenectady, NY (US)
Publication Date:
OSTI Identifier:
6513165
Resource Type:
Journal Article
Journal Name:
IEEE Trans. Power Del.; (United States)
Additional Journal Information:
Journal Volume: 3:4
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 29 ENERGY PLANNING, POLICY AND ECONOMY; 20 FOSSIL-FUELED POWER PLANTS; POWER TRANSMISSION LINES; LOAD MANAGEMENT; TEMPERATURE MEASUREMENT; CORRECTIONS; DYNAMIC LOADS; ELECTRIC CONDUCTORS; ERRORS; EXPERIMENTAL DATA; MONITORING; PEAK LOAD; TEMPERATURE EFFECTS; WEATHER; DATA; INFORMATION; MANAGEMENT; NUMERICAL DATA; 200300* - Electric Power Engineering- Power Transmission & Distribution- (-1989); 296002 - Energy Planning & Policy- Electric Power Transmission & Distribution- (-1989); 200104 - Fossil-Fueled Power Plants- Components

Citation Formats

Callahan, P M, and Douglass, D A. An experimental evaluation of a thermal line uprating by conductor temperature and weather monitoring. United States: N. p., 1988. Web. doi:10.1109/61.194006.
Callahan, P M, & Douglass, D A. An experimental evaluation of a thermal line uprating by conductor temperature and weather monitoring. United States. https://doi.org/10.1109/61.194006
Callahan, P M, and Douglass, D A. 1988. "An experimental evaluation of a thermal line uprating by conductor temperature and weather monitoring". United States. https://doi.org/10.1109/61.194006.
@article{osti_6513165,
title = {An experimental evaluation of a thermal line uprating by conductor temperature and weather monitoring},
author = {Callahan, P M and Douglass, D A},
abstractNote = {Conductor temperature monitors were installed on a four mile long section of 115 kV transmission line and served as the basis for the dynamic thermal rating of the line during June and December of 1985. A method of detecting temperature monitor measuring errors is described and a correction method suggested to correct the thermal rating of the line. Of the four spans containing temperature monitors, no one span was consistently the hottest (i.e., the ''critical span'') but for each month, one span was hottest more than half the time. By accounting for variations in span orientation along the test line section, it was found that the weather data from a single weather station as far as 20 miles away could be used to predict the statistical distribution of thermal ratings for the test line. The dynamic thermal rating of the test line was above the line's static rating some 80% to 90% of the time being 15% to 30% higher, 50% of the time. The correlation of peak contingency loading and peak dynamic thermal rating is identified as a major factor in evaluating the use of dynamic rating methods in line uprating.},
doi = {10.1109/61.194006},
url = {https://www.osti.gov/biblio/6513165}, journal = {IEEE Trans. Power Del.; (United States)},
number = ,
volume = 3:4,
place = {United States},
year = {Sat Oct 01 00:00:00 EDT 1988},
month = {Sat Oct 01 00:00:00 EDT 1988}
}