Application Research of Frequency Domain Dielectric Response Measuring Technology in Damp Evaluation of Oil-Paper Insulated Capacitive Equipment

Jiangtian, Chen; Wei, Dong; Bingxin, Chen; Wang, Zhi; Zhang, Xi; Hu, Xiaojun; Dai, Xiliang; Zheng, Wei

doi:10.1109/icwcsg50807.2020.00054

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The Correlation Between Oil's Performance Parameters and Its...1

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2024

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Cited by 3 publications

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“…The dielectric loss factor, also known as the loss tangent (tan δ), t is a measure of the rate of energy dissipation or loss of a material in an electric field [ 31 ]. It reflects the extent to which the internal oil is converted into heat energy due to the resistive loss under the action of alternating electric field.…”

Section: The Correlation Between Oil's Performance Parameters and Its...mentioning

confidence: 99%

Multivariate impedance spectroscopy method for the measuring of quality and status of electric power oils

Li,

Chen,

Xiong

2024

Heliyon

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Section: The Correlation Between Oil's Performance Parameters and Its...mentioning

confidence: 99%

Multivariate impedance spectroscopy method for the measuring of quality and status of electric power oils

Li,

Chen,

Xiong

2024

Heliyon

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Evaluation Means of Oil-paper Insulation’s Water Based on DC Conductivity

Zhang

Lin

et al. 2022

J. Phys.: Conf. Ser.

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Abstract.The measured spectral line based on frequency domain dielectric spectrum contains multiple superpositions of conductance and polarization processes. In view of the lack of methods to separate the polarization and the conductance processes and the lack of unique methods to characterize the model conductance parameters, the micro conductance processes are studied in depth according to the real and imaginary Kramers-Kronig relation. Firstly, different water content insulation samples were prepared during the laboratory conditions, and dielectric lines in frequency domain were obtained by measurement. Secondly, according to the k-K relation, the relaxation loss spectrum line is obtained by numerical integration of the measured real part of the complex polarization spectrum line, and then the conductivity loss spectrum line is obtained. Finally, the least square method is used to fit the conductivity spectrum line and calculate the conductivity value. The experimental results show that the conductance of the virtual part of the repolarization measurement can be separated from the relaxation loss line by k-K transformation, and the dc conductance can be calculated. At the same time,with the oil-paper insulating sample’s water content increasing, its electrical conductivity is gradually enhanced.

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The moisture diffusion between oil-paper foil layer of transformer bushing by temperature gradient field

Chen

Dai

Huang³

et al. 2022

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

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Application Research of Frequency Domain Dielectric Response Measuring Technology in Damp Evaluation of Oil-Paper Insulated Capacitive Equipment

Cited by 3 publications

References 6 publications

Multivariate impedance spectroscopy method for the measuring of quality and status of electric power oils

Multivariate impedance spectroscopy method for the measuring of quality and status of electric power oils

Evaluation Means of Oil-paper Insulation’s Water Based on DC Conductivity

The moisture diffusion between oil-paper foil layer of transformer bushing by temperature gradient field

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