Raman Spectrum Characteristics and Aging Diagnosis of Oil-paper Insulation with Different Oil-paper Ratios

被引：18

作者：

Zhou, Yongkuo ^{[1
]}

Chen, Weigen ^{[1
]}

Yang, Dingkun ^{[1
]}

Zhang, Ruyue ^{[1
]}

机构：

[1] Chongqing Univ, Key Lab Power Transmiss Equipment & Syst Secur &, Chongqing 400044, Peoples R China

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2020年 / 27卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Raman spectra; oil-paper insulation; thermal aging; oil-paper ratio; fitting; aging diagnosis; correction factor; TRANSFORMER; SPECTROSCOPY;

D O I：

10.1109/TDEI.2020.008938

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a method of aging diagnosis under different oil-paper ratios is proposed by investigating the accelerated thermal aging data with different oil-paper ratios. Aged oil-paper insulation samples with oil-paper ratios of 10:1, 15:1 and 20:1 are obtained by accelerated thermal aging tests. The Raman spectra of the transformer oil samples are measured by a Raman spectrometer, and screened by random forest algorithm to extract the features. A modified model is established to correcting the features of the aged oil samples under the conditions of 15:1 and 20:1 oil-paper ratio to features under the condition of 10:1 oil-paper ratio. An grid search optimized support vector machine (SVM) classification model is established, and verified by the corrected features. The experimental results show that the proposed method can effectively identify the aging of oil-paper insulation with different oil-paper ratios.

引用

页码：1587 / 1594

页数：8

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