An Approach to Determine the Health Index of Power Transformers
Authors:
- 1 June 2008
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Conference Record of the 2008 IEEE International Symposium on Electrical Insulation
- No. 1089084X,p. 192-196
Abstract
This paper describes a realistic health index formulation method for power transformers using readily available data. The method considers practical limitations on obtaining data, and the possible constraints on the parameters. It also utilizes IEC, IEEE, and CIGRE criteria for condition parameters. This Health Index calculation considers not only typical test results such as dissolved gas analysis (DGA), oil quality, furan, and power factor, but also other parameters such as tap changer and bushing condition, physical observations, load history, maintenance work orders, and age. The calculation includes condition ratings, weighting factors, and assigned scores for specific condition parameters. By using a multi-criteria analysis approach, the method combines the various factors into a condition-based health index.Keywords
This publication has 4 references indexed in Scilit:
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- Use of gas concentration ratios to interpret LTC & OCB dissolved gas data2004
- Review of condition assessment of power transformers in serviceIEEE Electrical Insulation Magazine, 2002
- A review of faults detectable by gas-in-oil analysis in transformersIEEE Electrical Insulation Magazine, 2002