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Communication Dans Un Congrès Année : 2023

Weather-Based Quasi Dynamic Thermal Ratings for Power Transformers

Résumé

This paper presents a preliminary study on climate change's impact on power transformers' ratings. This limit depends on the difference between air temperature and the maximum continuous allowable hot-spot oil temperature. On the other hand, atmospheric temperatures are expected to rise in the following years in Europe in a range between 0.52% and 8.18% Celsius degrees, according to the scenario. This will result in a rating reduction for existing and newly installed transformers. This study proposes a methodology to quantify this phenomenon and estimate its effect on several use cases. This is achieved by combining the transformers thermal model described in the IEC 60076-7 loading guide, historical meteorological reanalyses for 1970-2021, and climatic projections for 2022-2072 based on different greenhouse gas emissions hypotheses. Simulations are carried out using a quasi Dynamic Thermal Rating approach for HV transformers in the southeastern regions of France. Results show how the methodology proposed allows for a 6% rating increase in the cooler hours of the day and that projected future ratings are expected to be 5.031%-0.194% lower than the historical ones.
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Dates et versions

hal-04227016 , version 1 (03-10-2023)
hal-04227016 , version 2 (10-10-2023)

Identifiants

  • HAL Id : hal-04227016 , version 2

Citer

Sergio Daniel Montana Salas, Andrea Michiorri. Weather-Based Quasi Dynamic Thermal Ratings for Power Transformers. IEEE PES ISGT Europe 2023, IEEE PES ISGT Europe 2023, Oct 2023, Grenobe, France. ⟨hal-04227016v2⟩
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