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Temperature correction to dielectric modulus and activation energy prediction of oil-immersed cellulose insulation.
- Source :
-
IEEE Transactions on Dielectrics & Electrical Insulation . Jun2020, Vol. 27 Issue 3, p956-963. 8p. - Publication Year :
- 2020
-
Abstract
- The dielectric modulus Μ∗(ω) is used for studying the frequency domain response and activation energy (E a) of transformer immersed cellulose insulation. Existing literatures show that the temperature is a crucial factor affecting the Μ∗(ω) and aging rate of transformer oil-paper insulation, while the E a can be regarded as an indicator to reflect the average aging rate of the transformer immersed cellulose insulation. Therefore, the discussion of the temperature-dependence on both Μ∗(ω) and E a is of great significance. This paper attempts to report an approach for understanding the temperature impact on both Μ∗(ω) and E a. The obtained knowledge can be used to establish two available models for temperature correction on Μ∗(ω) and activation energy prediction of transform immersed cellulose insulation, respectively. These findings are expected to promote the reliability of the condition prediction result of transformer immersed cellulose insulation by using Μ∗(ω) and E a technique. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10709878
- Volume :
- 27
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Dielectrics & Electrical Insulation
- Publication Type :
- Academic Journal
- Accession number :
- 143495504
- Full Text :
- https://doi.org/10.1109/TDEI.2019.008530