DocumentCode :
1536229
Title :
Increasing thermal rating by risk analysis
Author :
Wan, Hua ; McCalley, James D. ; Vittal, Vijay
Author_Institution :
Dept. of Electr. Eng. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Volume :
14
Issue :
3
fYear :
1999
fDate :
8/1/1999 12:00:00 AM
Firstpage :
815
Lastpage :
828
Abstract :
It has long been realized that the thermal ratings of overhead transmission lines when computed deterministically, are typically conservative, resulting in under-utilization of conductors. A probabilistic method to assess thermal capacity based on risk is presented in this paper. The authors address the potential impacts of thermal overload, the stochastic model of conductor temperature, and the quantitative risk which indicates the average “danger” of an overload. The continuous, short-time and long-time thermal ratings are calculated using the risk of thermal overload. This method can provide technical justification for increased thermal capacity for a transmission line and an evaluation of risk for the given operating conditions
Keywords :
overhead line mechanical characteristics; power overhead lines; probability; thermal analysis; operating conditions; overhead transmission lines; probabilistic method; quantitative risk; risk analysis; stochastic model; technical justification; thermal capacity assessment; thermal overload risk; thermal rating; Annealing; Capacity planning; Conductors; Power systems; Power transmission lines; Risk analysis; Stochastic processes; Temperature; Thermal conductivity; Thermal loading;
fLanguage :
English
Journal_Title :
Power Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8950
Type :
jour
DOI :
10.1109/59.780891
Filename :
780891
Link To Document :
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