Abstract
Transformer Frequency Response Analysis (FRA) is one of the most efficient methods to examine the mechanical condition of the transformer without opening the transformer tank and extracting the active part. FRA is a comparative method, where the measured response curve is compared to the reference trace. In this study, various statistical indices for frequency response results interpretation are introduced and the influence of inter-disk fault on each method is evaluated via practical study. Performance of each indicator is discussed and the most reliable index for FRA results interpretation in inter-disk fault suggested. Practical study of inter-disk short-circuit is performed by the rheostat connected in parallel with the winding of distribution transformer. The voltage taps of the transformers are used in order to have the access to different percentage of the transformer winding. Thus by regulating transformer output voltage and emulating short-circuit, there is possibility to distinguish the critical values for "green", "yellow" and "red" zones for transformer FRA and condition evaluation. These critical zone values are advised to be used for assessing the transformer and FRA data via statistical indicators.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781728106526 |
| DOIs | |
| Publication status | Published - Jun 1 2019 |
| Event | 19th IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019 - Genoa, Italy Duration: Jun 11 2019 → Jun 14 2019 |
Publication series
| Name | Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019 |
|---|
Conference
| Conference | 19th IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019 |
|---|---|
| Country | Italy |
| City | Genoa |
| Period | 6/11/19 → 6/14/19 |
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Keywords
- correlation coefficient
- frequency response analysis
- frequency response interpretation
- statistical indices
- transformer analysis
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Renewable Energy, Sustainability and the Environment
- Electrical and Electronic Engineering
- Industrial and Manufacturing Engineering
- Environmental Engineering
- Control and Optimization
Cite this
Distribution Transformer Frequency Response Analysis : Behavior of Different Statistical Indices during Inter-disk Fault. / Nurmanova, Venera; Sultanbek, Adilet; Bagheri, Mehdi; Ahangar, Roya Ahmadi; Abedinia, Oveis; Phung, Toan; Gharehpetian, Gevork B.
Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019. Institute of Electrical and Electronics Engineers Inc., 2019. 8783252 (Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Distribution Transformer Frequency Response Analysis
T2 - Behavior of Different Statistical Indices during Inter-disk Fault
AU - Nurmanova, Venera
AU - Sultanbek, Adilet
AU - Bagheri, Mehdi
AU - Ahangar, Roya Ahmadi
AU - Abedinia, Oveis
AU - Phung, Toan
AU - Gharehpetian, Gevork B.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - Transformer Frequency Response Analysis (FRA) is one of the most efficient methods to examine the mechanical condition of the transformer without opening the transformer tank and extracting the active part. FRA is a comparative method, where the measured response curve is compared to the reference trace. In this study, various statistical indices for frequency response results interpretation are introduced and the influence of inter-disk fault on each method is evaluated via practical study. Performance of each indicator is discussed and the most reliable index for FRA results interpretation in inter-disk fault suggested. Practical study of inter-disk short-circuit is performed by the rheostat connected in parallel with the winding of distribution transformer. The voltage taps of the transformers are used in order to have the access to different percentage of the transformer winding. Thus by regulating transformer output voltage and emulating short-circuit, there is possibility to distinguish the critical values for "green", "yellow" and "red" zones for transformer FRA and condition evaluation. These critical zone values are advised to be used for assessing the transformer and FRA data via statistical indicators.
AB - Transformer Frequency Response Analysis (FRA) is one of the most efficient methods to examine the mechanical condition of the transformer without opening the transformer tank and extracting the active part. FRA is a comparative method, where the measured response curve is compared to the reference trace. In this study, various statistical indices for frequency response results interpretation are introduced and the influence of inter-disk fault on each method is evaluated via practical study. Performance of each indicator is discussed and the most reliable index for FRA results interpretation in inter-disk fault suggested. Practical study of inter-disk short-circuit is performed by the rheostat connected in parallel with the winding of distribution transformer. The voltage taps of the transformers are used in order to have the access to different percentage of the transformer winding. Thus by regulating transformer output voltage and emulating short-circuit, there is possibility to distinguish the critical values for "green", "yellow" and "red" zones for transformer FRA and condition evaluation. These critical zone values are advised to be used for assessing the transformer and FRA data via statistical indicators.
KW - correlation coefficient
KW - frequency response analysis
KW - frequency response interpretation
KW - statistical indices
KW - transformer analysis
UR - http://www.scopus.com/inward/record.url?scp=85070817323&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85070817323&partnerID=8YFLogxK
U2 - 10.1109/EEEIC.2019.8783252
DO - 10.1109/EEEIC.2019.8783252
M3 - Conference contribution
T3 - Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019
BT - Proceedings - 2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019
PB - Institute of Electrical and Electronics Engineers Inc.
ER -