Statistically determined static thermal ratings of overhead highvoltage transmission lines in the Rocky Mountain region

摘要

Static thermal ratings of overhead high voltage transmission linesnare fundamental and indispensable components in assessing the capabilitynof an electrical network to assure its reliable operation. Traditionalnmethods of determining static thermal ratings hinge on the presumptionnof specific weather combinations. The results are conservative staticnthermal ratings without a strong correlation to the prevailing weathernpatterns in a region. This paper delineates an adaptable methodology fornestablishing overhead static thermal ratings based on a statisticalnanalysis of historical weather observations. Use of the methodology addsnpractical knowledge and understanding to the development of staticnthermal ratings, and the resultant static thermal ratings have anrealistic relationship to the weather patterns in a region. Use of thenmethodology also allows the system to be designed and operated to anspecific level of risk