Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1 |
| Publisher | Springer Nature |
| Pages | 838-849 |
| Number of pages | 12 |
| ISBN (electronic) | 978-3-030-31676-1 |
| ISBN (print) | 9783030316754 |
| Publication status | Published - 2020 |
| Event | 21st International Symposium on High Voltage Engineering, ISH 2019 - Budapest, Hungary Duration: 26 Aug 2019 → 30 Aug 2019 |
Publication series
| Name | Lecture Notes in Electrical Engineering |
|---|---|
| Volume | 598 LNEE |
| ISSN (Print) | 1876-1100 |
| ISSN (electronic) | 1876-1119 |
Abstract
Reliable operation of power systems depends highly on condition of power transformers, hence making their condition monitoring top priority. Partial discharge (PD) is among the most common and deteriorative faults in a power transformer. PDs cause progressive deterioration of the insulation system of the transformers, and may lead to catastrophic failures, if no countermeasure is taken. PD measurements in power transformers are among well-known tools for the evaluation of the insulation system’s condition. For this purpose, the conventional method described in IEC 60270 is applied; however, the ultrahigh frequency (UHF) PD measurement technique, which is based on the radiation of electromagnetic (EM) waves due to a PD fault in very high frequency (VHF) and UHF range, has advantages, e.g., higher robustness against external noises, possibility of PD localization as well as its applicability for both offline and online PD measurements. In this contribution, UHF PD pulses are studied from an EM stand point. A specially designed PD fault model is placed inside a transformer tank model. The EM waves propagated due to PD are captured via UHF probes connected to a high sampling digital storage oscilloscope and transformed into the frequency domain using discrete Fourier transform (DFT). A Histogram of the frequency components is presented for different UHF probe positions. The results are verified by recording phase resolved PD patterns using both the conventional, and the UHF measurement method. Finally, a practice-oriented analysis of suitable and unsuitable center frequencies and bandwidths for UHF measurements is presented.
Keywords
- Monitoring system, PD diagnosis, Power transformers, UHF measurement technique
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
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Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1. Springer Nature, 2020. p. 838-849 (Lecture Notes in Electrical Engineering; Vol. 598 LNEE).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Electromagnetic Wave Radiation Due to Partial Discharges Inside Power Transformers in the Frequency Domain
AU - Azirani, Mohammad Akbari
AU - Ariannik, Mohamadreza
AU - Werle, Peter
AU - Akbari Azirani, Asghar
PY - 2020
Y1 - 2020
N2 - Reliable operation of power systems depends highly on condition of power transformers, hence making their condition monitoring top priority. Partial discharge (PD) is among the most common and deteriorative faults in a power transformer. PDs cause progressive deterioration of the insulation system of the transformers, and may lead to catastrophic failures, if no countermeasure is taken. PD measurements in power transformers are among well-known tools for the evaluation of the insulation system’s condition. For this purpose, the conventional method described in IEC 60270 is applied; however, the ultrahigh frequency (UHF) PD measurement technique, which is based on the radiation of electromagnetic (EM) waves due to a PD fault in very high frequency (VHF) and UHF range, has advantages, e.g., higher robustness against external noises, possibility of PD localization as well as its applicability for both offline and online PD measurements. In this contribution, UHF PD pulses are studied from an EM stand point. A specially designed PD fault model is placed inside a transformer tank model. The EM waves propagated due to PD are captured via UHF probes connected to a high sampling digital storage oscilloscope and transformed into the frequency domain using discrete Fourier transform (DFT). A Histogram of the frequency components is presented for different UHF probe positions. The results are verified by recording phase resolved PD patterns using both the conventional, and the UHF measurement method. Finally, a practice-oriented analysis of suitable and unsuitable center frequencies and bandwidths for UHF measurements is presented.
AB - Reliable operation of power systems depends highly on condition of power transformers, hence making their condition monitoring top priority. Partial discharge (PD) is among the most common and deteriorative faults in a power transformer. PDs cause progressive deterioration of the insulation system of the transformers, and may lead to catastrophic failures, if no countermeasure is taken. PD measurements in power transformers are among well-known tools for the evaluation of the insulation system’s condition. For this purpose, the conventional method described in IEC 60270 is applied; however, the ultrahigh frequency (UHF) PD measurement technique, which is based on the radiation of electromagnetic (EM) waves due to a PD fault in very high frequency (VHF) and UHF range, has advantages, e.g., higher robustness against external noises, possibility of PD localization as well as its applicability for both offline and online PD measurements. In this contribution, UHF PD pulses are studied from an EM stand point. A specially designed PD fault model is placed inside a transformer tank model. The EM waves propagated due to PD are captured via UHF probes connected to a high sampling digital storage oscilloscope and transformed into the frequency domain using discrete Fourier transform (DFT). A Histogram of the frequency components is presented for different UHF probe positions. The results are verified by recording phase resolved PD patterns using both the conventional, and the UHF measurement method. Finally, a practice-oriented analysis of suitable and unsuitable center frequencies and bandwidths for UHF measurements is presented.
KW - Monitoring system
KW - PD diagnosis
KW - Power transformers
KW - UHF measurement technique
UR - http://www.scopus.com/inward/record.url?scp=85076863921&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-31676-1_78
DO - 10.1007/978-3-030-31676-1_78
M3 - Conference contribution
AN - SCOPUS:85076863921
SN - 9783030316754
T3 - Lecture Notes in Electrical Engineering
SP - 838
EP - 849
BT - Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1
PB - Springer Nature
T2 - 21st International Symposium on High Voltage Engineering, ISH 2019
Y2 - 26 August 2019 through 30 August 2019
ER -