Analysis of internal winding stresses in EHV generator step-up transformer failures

IEEE Transactions on Power Delivery

Volumn 11, Issue 2, 1996, Pages 888-894

  Morched, A S ^a   Marti L ^a   Brierley, R H ^a   Lackey, J G ^a  

^a Ontario Hydro ^*  (Canada)

Author keywords

EMTP; Transformer Failure; Transformer Internal Resonances; Winding Transfer Functions

Indexed keywords

CAPACITANCE; EHV POWER TRANSMISSION; ELECTRIC FAULT CURRENTS; ELECTRIC TRANSFORMER INSULATION; HYDROELECTRIC GENERATORS; MATHEMATICAL MODELS; STRESS ANALYSIS; TRANSFER FUNCTIONS; TRANSFORMER WINDINGS; TRANSIENTS;

EHV GENERATOR; INTERNAL RESONANCES; STEP UP TRANSFORMER; TRANSFORMER FAILURE; VOLTAGE DISTRIBUTION MAPS;

ELECTRIC TRANSFORMERS;

EID: 0030129673     PISSN: 08858977     EISSN: None     Source Type: Journal    
DOI: 10.1109/61.489348     Document Type: Article

References (5)

1. Kroon, C., "Large Generator Transformers," CIGRE, Paris, August 1990, Paper No. 12-208.
2. Malewski, R., Douville, J., Lavallee, L., Tschudi, D., "Dielectric Stress in 735 kV Generator Transformer. Under Operating and Test Conditions," CIGRE, Paris, August 1990, Paper No. 12-203.
3. Wagenar, L.B., Schneider, J.M., Provanzana, J.H., Yannuci, D.A., Kennedy, W.N., "Rationale and Implementation of a New 765 kV Generator Step-up Transformer Specification," CIGRE, Paris, August 1990, Paper No. 12-202.
4. McNutt, W.J., "Failures of Generator Step-up Transformers Under Back-feeding Conditions," CIGRE SC12 Colloquium, Florence, October 1987.
5. A.S. Morched, L. Martí, J.H. Ottevangers, ́ A High Frequency Transformer Model for the EMTṔ, IEEE Transactions on Power Delivery, pp. 1615-1626, July 1993.