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Power Transformen Short-Circuit Strength - Requirements, Design, and Demonstration

1970; Institute of Electrical and Electronics Engineers; Volume: PAS-89; Issue: 8 Linguagem: Inglês

10.1109/tpas.1970.292780

0018-9510

W. J. McNutt, William M. Johnson, R. David Nelson, Ron Ayers,

Lightning and Electromagnetic Phenomena

The complex considerations associated with the design and demonstration of short-circuit withstand capability in power transformers are discussed. A model testing technique is described as a means of defining failure modes and failure stresses. One failure mode involving buckling of a winding subjected to inward radial forces is analyzed on a dynamic basis. Alternative means of capability demonstration are proposed and additional experience with the recurrent surge generator method of failure detection is presented.