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Weigen Chen, Xi Chen, Shangyi Peng and Jian Li
Dissolved gas analysis (DGA) has been widely applied to diagnose internal faults in transformer insulation systems. However, the accuracy of DGA technique is limited because of the lack of positive correlation of the fault-identifying gases with faults f...
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Weigen Chen, Wanping Wang, Qing Xia, Bing Luo and Licheng Li
In this paper, an artificial pollution test is carried out to study the leakage current of porcelain insulators. Fractal theory is adopted to extract the characteristics hidden in leakage current waveforms. Fractal dimensions of the leakage current for t...
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Yuanbing Zheng, Caixin Sun, Jian Li, Qing Yang and Weigen Chen
The development of the smart grid has resulted in new requirements for fault prediction of power transformers. This paper presents an entropy-based Bagging (E-Bagging) method for prediction of characteristic parameters related to power transformers fault...
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