Multi-Attributes Based Health Assessment of Power Transformers

Volume 4 Issue 3 August - October 2016

Research Paper

Multi-Attributes Based Health Assessment of Power Transformers

Chilaka Ranga*, Ashwani Kumar Chandel**, Rajeevan Chandel***

* Ph.D Scholar, Department of Electrical Engineering, NIT, Hamirpur, HP, India.

** Professor and Head, Department of Electrical Engineering, NIT, Hamirpur, HP, India.

*** Professor, Department of Electronics and Communication Engineering, NIT, Hamirpur, HP, India.

Ranga, C., Chandel, A. K., and Chandel, R. (2016). Multi-Attributes Based Health Assessment of Power Transformers. i-manager’s Journal on Power Systems Engineering, 4(3), 28-38. https://doi.org/10.26634/jps.4.3.8269

Abstract

Condition monitoring of power transformers improves the reliability and the safety of an electrical power system. It protects the transformers from fire hazards, and avoids a huge revenue loss to the utilities. The health status of transformers is decided by their several influencing factors. An accurate health assessment of transformers based on various influencing factors has been a challenging task for the researchers as well as the diagnostic experts. In the present paper, a new multi-criterion technique for assessing the health condition of the transformers has been proposed. The main aspects of transformers have been taken into consideration in evaluating their present health status. The overall outcome of the proposed model depends upon all considered attributes as a whole, but not on any single attribute. Hence the proposed approach determines the more reliable and accurate health condition of transformers. It removes the over influence of the attributes in an exact decision making. It also overcomes the shortcomings of the conventional health assessment methods of transformers. Final calculated factors imply what kind of action needs to be implemented for optimal performance and life extension of the transformers.