Transformer Oil Chromatographic Analysis of Data Anomalies Caused by Harmonics

Abstract:

According to the 66kV transformer blackout phenomenon, the oil chromatogram data analysis, found that the transformer existed temperature (676 °C) and low energy discharge defect. Through measuring the harmonic content to and analyzing the load condition, test results show that the grid was injected harmonic currents by the substation non-linear loads, its 5 times,7 times, 11 times, 13 times harmonic were higher than the state standards, this shows that the harmonic is the cause of the chromatographic data of transformer oil abnormal

• Periodical: Applied Mechanics and Materials (Volumes 543-547)
• Pages: 713-716
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.543-547.713
• Online since: March 2014
• Authors: Hua Zhang*, Chaun Zong Zhao, Qing Hao Wang, Rui Guo Chen, Yong Wang, Bo Liu, Jin Ye Li, Ning Zhang, Tian Shu Hai, Bo Li
• Keywords: Chromatographic, Harmonic, Overheating, Partial Discharge (PD), Skin Effect

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