Transformers Magazine, Vol. 7 No. 3, 2020.
Izvorni znanstveni članak
Power transformer under short-circuit fault conditions: A multiphysics approach
A. L. Rodriguez
T. Guffroy
P. Lombard
V. Leconte
Sažetak
Transformers’ windings experience mechanical loads from electromagnetic forces due to the currents they carry.
During normal operation, the resulting stresses and strains have minor influence, therefore they do not represent the significant risk to the devices’ integrity.
However, transformers can suffer from high sudden short-circuit currents that are several times higher than those during the normal operation. These short-circuit currents are a significant threat, not only from an electrical but also from the structural integrity point of view. In this paper, coupled electromagnetic and structural mechanics simulations are carried out to evaluate short-circuit fault risks in a comprehensive and accurate way.
Ključne riječi
simulation, multiphysics, short-circuit, Laplace forces
Hrčak ID:
242423
URI
Datum izdavanja:
8.7.2020.
Posjeta: 749 *