研究目的
To characterize faults (D1, D2, and T3) in the transformer based on the optical characteristics of transformer oil.
研究成果
Optical characterization of transformer oil in the NIR region is a faster and cheaper alternative to detect D1, D2, and T3 faults in transformers, with specific absorbance peaks identified for each fault condition. Further studies are recommended to establish exact absorbance value ranges for each fault.
研究不足
The consistency of the optical characterization method and the exact range of absorbance values for each fault condition (T3, D1, D2) need further establishment with more oil samples.
1：Experimental Design and Method Selection:
Optical characterization of transformer oil samples using UV-Vis-NIR spectrophotometry to identify fault conditions.
2：Sample Selection and Data Sources:
21 transformer oil samples from main tanks and OLTC tanks of in-service transformers.
3：List of Experimental Equipment and Materials:
Agilent Cary 5000 Spectrophotometer, 1cm path-length cuvettes.
4：Experimental Procedures and Operational Workflow:
UV-Vis-NIR light passed through cuvettes containing reference and sampled transformer oil, with spectra analyzed in the range of 200-3300 nm.
5：Data Analysis Methods:
Correlation of optical absorbance peaks with fault conditions identified by DGA and Duval Triangle analysis.
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