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Comparison between IEEE and CIGRE Thermal Behaviour Standards and Measured Temperature on a 132-kV Overhead Power Line

Alberto Arroyo, Pablo Castro, Raquel Martinez, Mario Manana, Alfredo Madrazo, Ramón Lecuna and Antonio Gonzalez
Additional contact information
Alberto Arroyo: Electrical and Energy department, University of Cantabria, Av. Los Castros S/N, Santander 39005, Spain
Pablo Castro: Electrical and Energy department, University of Cantabria, Av. Los Castros S/N, Santander 39005, Spain
Raquel Martinez: Electrical and Energy department, University of Cantabria, Av. Los Castros S/N, Santander 39005, Spain
Mario Manana: Electrical and Energy department, University of Cantabria, Av. Los Castros S/N, Santander 39005, Spain
Alfredo Madrazo: Electrical and Energy department, University of Cantabria, Av. Los Castros S/N, Santander 39005, Spain
Ramón Lecuna: Electrical and Energy department, University of Cantabria, Av. Los Castros S/N, Santander 39005, Spain
Antonio Gonzalez: Viesgo, Santander 39011, Spain

Energies, 2015, vol. 8, issue 12, 1-12

Abstract: This paper presents the steady and dynamic thermal balances of an overhead power line proposed by CIGRE (Technical Brochure 601, 2014) and IEEE (Std.738, 2012) standards. The estimated temperatures calculated by the standards are compared with the averaged conductor temperature obtained every 8 min during a year. The conductor is a LA 280 Hawk type, used in a 132-kV overhead line. The steady and dynamic state comparison shows that the number of cases with deviations to conductor temperatures higher than 5 ∘ C decreases from around 20% to 15% when the dynamic analysis is used. As some of the most critical variables are magnitude and direction of the wind speed, ambient temperature and solar radiation, their influence on the conductor temperature is studied. Both standards give similar results with slight differences due to the different way to calculate the solar radiation and convection. Considering the wind, both standards provide better results for the estimated conductor temperature as the wind speed increases and the angle with the line is closer to 90 ∘ . In addition, if the theoretical radiation is replaced by that measured with the pyranometer, the number of samples with deviations higher than 5 ∘ C is reduced from around 15% to 5%.

Keywords: thermal rating; ampacity; overhead line temperature; weather parameters; real-time monitoring (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: Add references at CitEc
Citations: View citations in EconPapers (10)

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