Theoretical Study on a Thermal Model for Large Power Transformer Units

Authors: Traian Chiulan, Brandusa Pantelimon

Abstract:

The paper analyzes the large power transformer unit regimes, indicating the criteria for the management of the voltage operating conditions, as well as the change in the operating conditions with the load connected to the secondary winding of the transformer unit. Further, the paper presents the software application for the evaluation of the transformer unit operation under different conditions. The software application was developed by means of virtual instrumentation.

Keywords: Operating regimes, power transformer, overload, lifetime, virtual instrumentation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1061507

References:

[1] III-RS-DN/30, Instruction regarding power and instrumentation transformers operating regimes, National Energy Dispatcher, 1985
[2] PE 126/1985, Rules for technical operation of primary power equipments, ICEMENERG, 1985
[3] STAS 1703/1/80, Power transformers. Technical quality conditions
[4] SR EN 60076-2/2002, Power transformers. Part 2. Heating
[5] SR EN 60076-1/2002, Power transformers. Part 1. Generalities
[6] NTE 001/03/2000, Norm on the insulation selection, insulation matching, and power installation protection against overvoltages.
[7] CEI 60076-1 Edition 2/2000 Transformateurs de puissance - Partie 1: Generalite
[8] CEI 60076-2 Edition 2/1993 Transformateurs de puissance - Partie 2: Echauffement
[9] CEI 60354 Edition 2/1991 Guide de charge pour transformateurs de puissance immergé dans l-huile
[10] Group de Travail 06 du Comite d-Etudes 12 (Transformateurs), Rapport final du Group de Travail 06 du Comite d-Etudes 12, ELECTRA Nr.82/1982