Influence of charging voltage magnitude on time domain dielectric response of oil–paper insulation

Banerjee, Chandra Madhab; Dutta, Saurabh; Baral, Arijit; Chakravorti, S.

doi:10.1049/iet-smt.2018.5276

Cited by 6 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measurement conclusions of RVM [7–11] (return voltage method), PDC [12–16] (polarization and depolarization current), and FDS [17–23] (frequency domain spectroscopy) based on dielectric response are consistent when it comes to transformer aging diagnosis. RVM can only evaluate the overall condition of the insulation and cannot distinguish the condition of insulating oil from that of insulating paper.…”

Section: Introductionmentioning

confidence: 92%

“…Moreover, the field test will inevitably be affected by electromagnetic interference because the polarization and depolarization current values are quite small, the accuracy of the measurement is questionable in this case. Therefore, how to suppress the field temperature interference and electromagnetic interference needs to be further studied [14,15]. Meanwhile, FDS, as a nondestructive electrical diagnosis technology, has the characteristics of a strong anti-interference ability, wide measurement frequency band, and abundant information compared to the other methods [18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of hybrid polarization frequency domain spectrum characteristics of oil‐paper insulation transformers

Zou

et al. 2021

IET Science Measure & Tech

View full text Add to dashboard Cite

This paper utilizes a hybrid Debye model to accurately simulate the relaxation response process of the oil-paper insulation of a transformer to explore the application of frequency domain dielectric spectroscopy (FDS) in nondestructive diagnosis of the aging condition of oil-paper insulation. Via FDS test data, the model parameters can be identified, and the influence laws of FDS can be obtained through the variation of model parameters. To explore the effects of insulating paper moisture content, insulating paper layers, and test temperature on FDS characteristics, an FDS experimental platform is established. The results show that the hybrid Debye model can effectively reflect the relaxation response process of oil-paper insulation under different conditions, as well as that a physical relationship between the model parameters and oil-paper dielectric polarization exists. In addition, the parameters of the hybrid Debye model can be used as the characteristic quantities for the non-destructive evaluation of the oil-paper insulation state, providing new ideas for the non-destructive evaluation of the oil-paper insulation state.

show abstract

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Analysis of hybrid polarization frequency domain spectrum characteristics of oil‐paper insulation transformers

Zou

et al. 2021

IET Science Measure & Tech

View full text Add to dashboard Cite

show abstract

“…However, the furfural in oil is easily filtered by adsorbents in siphon filter devices and the replacement of transformer oil, which can lead to inaccurate measurement results. Traditional electrical performance testing methods, such as insulation resistance, absorption ratio and power frequency dielectric loss factor (tanδ), reflect singular insulation information, which can only be used as a reference index for assessing the insulation condition [9,10].…”

Section: Introductionmentioning

confidence: 99%

Aging assessment method of oil–paper composite insulation based on repeated polarization current characteristics

Zhuang

Wang

et al. 2021

IET Science Measure & Tech

View full text Add to dashboard Cite

To explore the aging assessment method of the oil-paper insulation in power transformers, the polarization and depolarization current (PDC) characteristics of oil-paper composite insulation samples are investigated under high applied voltage. Based on the asymmetry of polarization absorption current and depolarization current and the polarity effect of insulation pressboard, the repeated polarization current test method is proposed. A novel aging characteristic parameter, which is the ratio of the normalized charge for the first polarization and the normalized charge for the second polarization, is extracted. The difference between the decay rates of the first polarization current and the second polarization current increases at first and then decreases with the polarization time, and decreases with increasing aging degree of the pressboard. The more serious the insulation aging is, the smaller the variation range of aging characteristic parameter with polarization time is, and the closer the value is to 1. With decrease in the DP, the maximum of aging characteristic parameter changes in a decreasing trend. The aging condition of the oil-paper composite insulation can be assessed by the repeated polarization current method and the relationship between the aging characteristic parameter and the polarization time.

show abstract

Moisture Estimation of Power Transformer Using Transfer Function of Conventional Debye Model

Banerjee

Baral

Chakravorti

2022

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

Influence of charging voltage magnitude on time domain dielectric response of oil–paper insulation

Cited by 6 publications

References 21 publications

Analysis of hybrid polarization frequency domain spectrum characteristics of oil‐paper insulation transformers

Analysis of hybrid polarization frequency domain spectrum characteristics of oil‐paper insulation transformers

Aging assessment method of oil–paper composite insulation based on repeated polarization current characteristics

Moisture Estimation of Power Transformer Using Transfer Function of Conventional Debye Model

Contact Info

Product

Resources

About