Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1 |
| Place of Publication | Cham |
| Publisher | Springer Nature |
| Pages | 705-713 |
| Number of pages | 9 |
| 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
The investigation of the oil properties is one of the most basic, but also one of the most powerful methods of condition assessment on power transformers. With the standard oil test (SOT) it can be tested if the oil is still able to withstand the stresses occurring during operation. In order to do a standard oil test different parameters are measured. With some of these parameters for example the breakdown voltage mainly the capability to withstand dielectric stresses can be investigated. Other parameters such as acidity or dielectric dissipation factor can help to assess the aging of the insulating liquid. Because some parameters indicate the same properties (such as ageing state) it could be possible that there are pairs or groups pf parameters, which give redundant results. With other words: it could be possible that some parameters indicate each other. In this case it would be possible to reduce the number of parameters, which were measured during the SOT. To investigate if such behaviour can be observed in real oil properties of real transformers, the different parameters of oil properties of a huge database were analysed with correlation analysis. Additionally it is shown how often the different oil properties can be classified as good, fair or poor according to the applicable standard IEC 60422. Using these information operators of power transformer are able to evaluate the results of the SOT of their own transformers not only according to the standard, but also according to the performance of other real transformers.
Keywords
- Correlation, Power transformer, Standard oil test
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. Cham: Springer Nature, 2020. p. 705-713 (Lecture Notes in Electrical Engineering; Vol. 598 LNEE).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Multidimensional Investigation of Transformer Oil Properties
AU - Schreiter, Sebastian
AU - Lohmeyer, Holger
AU - Werle, Peter
PY - 2020
Y1 - 2020
N2 - The investigation of the oil properties is one of the most basic, but also one of the most powerful methods of condition assessment on power transformers. With the standard oil test (SOT) it can be tested if the oil is still able to withstand the stresses occurring during operation. In order to do a standard oil test different parameters are measured. With some of these parameters for example the breakdown voltage mainly the capability to withstand dielectric stresses can be investigated. Other parameters such as acidity or dielectric dissipation factor can help to assess the aging of the insulating liquid. Because some parameters indicate the same properties (such as ageing state) it could be possible that there are pairs or groups pf parameters, which give redundant results. With other words: it could be possible that some parameters indicate each other. In this case it would be possible to reduce the number of parameters, which were measured during the SOT. To investigate if such behaviour can be observed in real oil properties of real transformers, the different parameters of oil properties of a huge database were analysed with correlation analysis. Additionally it is shown how often the different oil properties can be classified as good, fair or poor according to the applicable standard IEC 60422. Using these information operators of power transformer are able to evaluate the results of the SOT of their own transformers not only according to the standard, but also according to the performance of other real transformers.
AB - The investigation of the oil properties is one of the most basic, but also one of the most powerful methods of condition assessment on power transformers. With the standard oil test (SOT) it can be tested if the oil is still able to withstand the stresses occurring during operation. In order to do a standard oil test different parameters are measured. With some of these parameters for example the breakdown voltage mainly the capability to withstand dielectric stresses can be investigated. Other parameters such as acidity or dielectric dissipation factor can help to assess the aging of the insulating liquid. Because some parameters indicate the same properties (such as ageing state) it could be possible that there are pairs or groups pf parameters, which give redundant results. With other words: it could be possible that some parameters indicate each other. In this case it would be possible to reduce the number of parameters, which were measured during the SOT. To investigate if such behaviour can be observed in real oil properties of real transformers, the different parameters of oil properties of a huge database were analysed with correlation analysis. Additionally it is shown how often the different oil properties can be classified as good, fair or poor according to the applicable standard IEC 60422. Using these information operators of power transformer are able to evaluate the results of the SOT of their own transformers not only according to the standard, but also according to the performance of other real transformers.
KW - Correlation
KW - Power transformer
KW - Standard oil test
UR - http://www.scopus.com/inward/record.url?scp=85076851909&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-31676-1_67
DO - 10.1007/978-3-030-31676-1_67
M3 - Conference contribution
AN - SCOPUS:85076851909
SN - 9783030316754
T3 - Lecture Notes in Electrical Engineering
SP - 705
EP - 713
BT - Proceedings of the 21st International Symposium on High Voltage Engineering - Volume 1
PB - Springer Nature
CY - Cham
T2 - 21st International Symposium on High Voltage Engineering, ISH 2019
Y2 - 26 August 2019 through 30 August 2019
ER -