Summary

Digital Twins are on everyone’s lips but their possibilities supporting the grid usage are still limited. A typical application is the evaluation of transformer loading capabilities during their operation consideration of loss of life. This issue is not new, as design-specific loading capacity tables for transformers have been available in digital and printed form for decades. The question is to what extent digitalization can improve and optimize the use of this data, considering other limiting factors in the entire system, such as grid components like overhead lines, as well as its practical application in daily grid operations.

This paper attempts to provide an answer and it demonstrates how a thermal digital twin model of transformers can be beneficial for a power utility. The results of a research cooperation on this topic between Siemens Energy Austria and the Austrian Power Grid AG (APG) are presented. The transformer under investigation is a strategic important 300 MVA, 400 kV threephase transformer in Austria with a high feed-in from wind power plants and this transformer is a grid bottleneck from time to time.

Additional informations

Publication type Session Materials
Reference A2_11987_2026
Publication year
Publisher CIGRE
Country Austria
Study committees
File size 2 MB
Price for non member 30 €
Price for member 30 €

Authors

BELAVIĆ Fredi - Austrian Power Grid AG; RAITH Johannes - Siemens Energy Austria GmbH; STOESSL Martin - Siemens Energy Austria GmbH

Grid Load Optimization with Transformer Thermal Digital Twin