Analyzing Transformer Core Faults by using Real-Rational Polynomial Function Model From FRA Data
K. Sahitya Yadav1, K. Sumanth2
1Ms. K. Sahitya Yadav, EEE Department, Sreenidhi Institute of Science & Technology, Ghatkesar, Hyderabad, Andhra Pradesh, India.
2Dr.K. Sumanth, EEE Department, Sreenidhi Institute of Science & Technology, Ghatkesar, Hyderabad, Andhra Pradesh, India.
Manuscript received January 05, 2013. | Revised Manuscript received on January 12, 2013. | Manuscript published on January 15, 2013. | PP: 20-25 | Volume-1, Issue-2, January 2013. | Retrieval Number: B0120011213/2013©BEIESP
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© The Authors. Published By: 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 core faults. These core faults were physically simulated to study and identify the various parameters that influence the frequency responses. Transfer Function using real-rational polynomial function model 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 core faults
Keywords: Frequency Response Analysis; Real-rational polynomial; Transfer Function; core faults