Interpreting Transformer Winding Axial Displa-cements using Transfer Function Parameter
K. Sahitya Yadav1, M. Prameela2, K. Sumanth3, G. Radhakrishna Murthy4, Pradeep M. Nirgude5
1Ms. K. Sahitya Yadav, EEE Department, Sreenidhi Institute of Science & Technology, Ghatkesar, Hyderabad, Andhra Pradesh, India.
2Mrs. M. Prameela, EEE Department, Vignan University, Guntur, Andhra Pradesh, India.
3Dr.K. Sumanth, EEE Department, Sreenidhi Institute of Science & Technology, Ghatkesar, Hyderabad, Andhra Pradesh, India.
4Dr. G. Radhakrishna Murthy, EEE Department, Vignan University, Guntur, Andhra Pradesh, India.
5Dr. Pradeep M. Nirgude, UHV Research Laboratory, Central Power Research Institute, Hyderabad, Andhra Pradesh, India.
Manuscript received on October 01, 2012. | Revised Manuscript received on October 05, 2012. | Manuscript published on October 10, 2012. | PP: 64-69 | Volume-1 Issue-5 October 2012. | Retrieval Number: E0299091512/2012©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The paper presents the results of the experimental investigation carried out on a transformer to obtain frequency response data under axial displacements. These displacements were physically simulated to study and identify the various parameters that influence the frequency responses. Transfer Function using real rational polynomial technique was computed from the frequency response data. Various transfer function parameters were computed for reference and simulated faulty frequency response data. These parameters are then analyzed to relate changes to characterize the defects. The analysis presented based on the transfer function characteristic parameter changes will help in diagnosing transformer winding axial displacements.
Keywords: Frequency Response Analysis, Real rational polynomial technique, Transfer Function, Transformer winding axial displacement.