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Publication Type : Journal Article
Publisher : Materials Today: Proceedings
Source : Materials Today: Proceedings, Volume 46, p.4659-4666 (2021)
Keywords : Differential method, Distribution transformer, Exponential method, Loss of life (LOL) of transformer, Thermal model
Campus : Amritapuri
School : School of Engineering
Center : Amrita Innovation & Research
Department : Electrical and Electronics
Verified : Yes
Year : 2021
Abstract : Transformer failure is one of the main causes of distribution faults. Factors like an inter-winding failure, over current, oil leakage, ambient temperature, electrical faults, etc. are few of the main reasons for transformer failures. In this paper, various monitoring techniques are reviewed along with their advantages and disadvantages so that a proper monitoring technique for various transformer applications can be chosen. A case study is performed on a 500 KVA substation transformer using IEC 60076-7 specified thermal model of transformer. The parameters like top oil temperature and hot-spot temperature are calculated using differential method and exponential method to estimate the loss of life of the transformer and both the methods are compared with one another to decide on the best suited method for calculation of loss of life of the transformer.
Cite this Research Publication : Lekshmi R. Chandran, Babu, G. S. Ajith, Dr. Manjula G. Nair, and Ilango Karuppasamy, “A review on status monitoring techniques of transformer and a case study on loss of life calculation of distribution transformers”, Materials Today: Proceedings, vol. 46, pp. 4659-4666, 2021.