Details
| Translated title of the contribution | Development of an online fault gas monitoring system for hermetically sealed power transformers |
|---|---|
| Original language | German |
| Title of host publication | VDE-Fachtagung Hochspannungstechnik 2018 |
| Publisher | VDE Verlag GmbH |
| Pages | 258-263 |
| Number of pages | 6 |
| ISBN (electronic) | 978-3-8007-4807-5 |
| Publication status | Published - 2018 |
| Event | VDE-Fachtagung Hochspannungstechnik 2018 - VDE Conference on High Voltage Technology 2018 - Berlin, Germany Duration: 12 Nov 2018 → 14 Nov 2018 |
Abstract
Transformer faults, depending on their nature, lead to decomposition of the insulating liquid and/or cellulose paper. In this process, dissolved fault gases are produced. In case of severe faults, generation of considerable amount of fault gases is expected, which will, in case of hermetically sealed power transformers, which are typical in wind parks, gradually escape from the insulating liquid and diffuse into the gas cushion. In these transformers, the tank must be hermetically sealed, because otherwise, during operation, the insulating liquid would be subjected to additional aging as a result of the absorption of oxygen and moisture from the atmosphere in addition to the temperature and thus load-dependent stress. Therefore, these transformers have a gas cushion, mostly out of nitrogen or dry air, to minimize the ingress of ambient air and thus moisture into the insulating liquid. As a cost-effective and compact alternative to gas chromatography, the development of a semiconductor-based online monitoring system of undissolved fault gases is proposed. The proposed monitoring system is based on a set of integrated sensors, tracking the concentration of fault gases in the gas cushion continuously, through which faults in the insulating system can be detected early. Furthermore, physical parameters such as temperature, pressure, and humidity are also recorded permanently.
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Electrical and Electronic Engineering
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VDE-Fachtagung Hochspannungstechnik 2018. VDE Verlag GmbH, 2018. p. 258-263.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Entwicklung eines Online-Fehlergas-Überwachungssystems für hermetisch verschlossene Leistungstransformatoren
AU - Akbari Azirani, M.
AU - Kuhnke, M.
AU - Werle, P.
AU - Sorgatz, W.
PY - 2018
Y1 - 2018
N2 - Transformer faults, depending on their nature, lead to decomposition of the insulating liquid and/or cellulose paper. In this process, dissolved fault gases are produced. In case of severe faults, generation of considerable amount of fault gases is expected, which will, in case of hermetically sealed power transformers, which are typical in wind parks, gradually escape from the insulating liquid and diffuse into the gas cushion. In these transformers, the tank must be hermetically sealed, because otherwise, during operation, the insulating liquid would be subjected to additional aging as a result of the absorption of oxygen and moisture from the atmosphere in addition to the temperature and thus load-dependent stress. Therefore, these transformers have a gas cushion, mostly out of nitrogen or dry air, to minimize the ingress of ambient air and thus moisture into the insulating liquid. As a cost-effective and compact alternative to gas chromatography, the development of a semiconductor-based online monitoring system of undissolved fault gases is proposed. The proposed monitoring system is based on a set of integrated sensors, tracking the concentration of fault gases in the gas cushion continuously, through which faults in the insulating system can be detected early. Furthermore, physical parameters such as temperature, pressure, and humidity are also recorded permanently.
AB - Transformer faults, depending on their nature, lead to decomposition of the insulating liquid and/or cellulose paper. In this process, dissolved fault gases are produced. In case of severe faults, generation of considerable amount of fault gases is expected, which will, in case of hermetically sealed power transformers, which are typical in wind parks, gradually escape from the insulating liquid and diffuse into the gas cushion. In these transformers, the tank must be hermetically sealed, because otherwise, during operation, the insulating liquid would be subjected to additional aging as a result of the absorption of oxygen and moisture from the atmosphere in addition to the temperature and thus load-dependent stress. Therefore, these transformers have a gas cushion, mostly out of nitrogen or dry air, to minimize the ingress of ambient air and thus moisture into the insulating liquid. As a cost-effective and compact alternative to gas chromatography, the development of a semiconductor-based online monitoring system of undissolved fault gases is proposed. The proposed monitoring system is based on a set of integrated sensors, tracking the concentration of fault gases in the gas cushion continuously, through which faults in the insulating system can be detected early. Furthermore, physical parameters such as temperature, pressure, and humidity are also recorded permanently.
UR - http://www.scopus.com/inward/record.url?scp=85096767652&partnerID=8YFLogxK
M3 - Aufsatz in Konferenzband
AN - SCOPUS:85096767652
SP - 258
EP - 263
BT - VDE-Fachtagung Hochspannungstechnik 2018
PB - VDE Verlag GmbH
T2 - VDE-Fachtagung Hochspannungstechnik 2018 - VDE Conference on High Voltage Technology 2018
Y2 - 12 November 2018 through 14 November 2018
ER -