Details
| Original language | English |
|---|---|
| Pages (from-to) | 805-814 |
| Number of pages | 10 |
| Journal | Journal of Electrical Engineering and Technology |
| Volume | 18 |
| Issue number | 2 |
| Early online date | 20 Oct 2022 |
| Publication status | Published - Mar 2023 |
Abstract
This paper presents Weibull failure models by experimental work and the step-up accelerated electrical–thermal test of oil-impregnated paper with 0.2 mm thickness is carried out under pulsating DC voltage at different temperatures. The breakdown voltage and failure time of the oil gap–paper insulation specimens at the same voltage duration is obtained by accelerated electrical–thermal aging test. The Weibull failure models of three-variable oil gap–paper insulation modified by Fallou and Ramu are established to analyze the failure data of oil gap–paper under different electric field intensities and temperatures. The statistical test method was used to evaluate the applicability and accuracy of two modified triple-variables Weibull failure models. The comprehensive test index of the Fallou-modified WFD is 1.6851, and the comprehensive test index of the Ramu-modified WFD is 1.8124. The Fallou-modified results were more accurate than Ramu-modified results in estimating the statistical distribution of failure data. Results show that the proposed triple-variable Weibull failure model could fully reflect the insulation state of oil gap–paper under the action of electric and thermal fields.
Keywords
- Accelerated electrical–thermal aging experiment, Converter transformer, Oil gap–paper insulation, Pulsating DC voltage, Triple-variable Weibull failure model
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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In: Journal of Electrical Engineering and Technology, Vol. 18, No. 2, 03.2023, p. 805-814.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The Study on Weibull Failure Models for Oil Gap–Paper Insulation Under Pulsating DC Voltage with Temperature
AU - Jiang, Tianyan
AU - Deng, Biao
AU - He, Qiaoqing
AU - Bi, Maoqiang
AU - Chen, Xi
AU - Bao, Lianwei
AU - Zhou, Xin
N1 - Funding Information: This work is supported by the funding of the National Natural Science Foundation of China (52177129) and Scientific and Technological Research Program of Chongqing Municipal Education Commission (Grant No. KJQN202001146) and graduate Innovation Program of Chongqing University of Technology (gzlcx20223053). Funding Information: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Tianyan Jiang reports financial support was provided by Natural Science Foundation of China. Xi Chen reports financial support was provided by Chongqing Municipal Education Commission. Biao Deng reports financial support was provided by graduate Innovation Program of Chongqing University of Technology.
PY - 2023/3
Y1 - 2023/3
N2 - This paper presents Weibull failure models by experimental work and the step-up accelerated electrical–thermal test of oil-impregnated paper with 0.2 mm thickness is carried out under pulsating DC voltage at different temperatures. The breakdown voltage and failure time of the oil gap–paper insulation specimens at the same voltage duration is obtained by accelerated electrical–thermal aging test. The Weibull failure models of three-variable oil gap–paper insulation modified by Fallou and Ramu are established to analyze the failure data of oil gap–paper under different electric field intensities and temperatures. The statistical test method was used to evaluate the applicability and accuracy of two modified triple-variables Weibull failure models. The comprehensive test index of the Fallou-modified WFD is 1.6851, and the comprehensive test index of the Ramu-modified WFD is 1.8124. The Fallou-modified results were more accurate than Ramu-modified results in estimating the statistical distribution of failure data. Results show that the proposed triple-variable Weibull failure model could fully reflect the insulation state of oil gap–paper under the action of electric and thermal fields.
AB - This paper presents Weibull failure models by experimental work and the step-up accelerated electrical–thermal test of oil-impregnated paper with 0.2 mm thickness is carried out under pulsating DC voltage at different temperatures. The breakdown voltage and failure time of the oil gap–paper insulation specimens at the same voltage duration is obtained by accelerated electrical–thermal aging test. The Weibull failure models of three-variable oil gap–paper insulation modified by Fallou and Ramu are established to analyze the failure data of oil gap–paper under different electric field intensities and temperatures. The statistical test method was used to evaluate the applicability and accuracy of two modified triple-variables Weibull failure models. The comprehensive test index of the Fallou-modified WFD is 1.6851, and the comprehensive test index of the Ramu-modified WFD is 1.8124. The Fallou-modified results were more accurate than Ramu-modified results in estimating the statistical distribution of failure data. Results show that the proposed triple-variable Weibull failure model could fully reflect the insulation state of oil gap–paper under the action of electric and thermal fields.
KW - Accelerated electrical–thermal aging experiment
KW - Converter transformer
KW - Oil gap–paper insulation
KW - Pulsating DC voltage
KW - Triple-variable Weibull failure model
UR - http://www.scopus.com/inward/record.url?scp=85140243141&partnerID=8YFLogxK
U2 - 10.1007/s42835-022-01281-2
DO - 10.1007/s42835-022-01281-2
M3 - Article
AN - SCOPUS:85140243141
VL - 18
SP - 805
EP - 814
JO - Journal of Electrical Engineering and Technology
JF - Journal of Electrical Engineering and Technology
SN - 1975-0102
IS - 2
ER -