scholarly journals Electrical Tree Growth Characteristics in Epoxy Resin With Harmonic Superimposed DC Voltage

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 47273-47281 ◽  
Author(s):  
Boxue Du ◽  
Meng Tian ◽  
Jingang Su ◽  
Tao Han
Keyword(s):  
Epoxy Resin ◽  
Tree Growth ◽  
Growth Characteristics ◽  
Dc Voltage ◽  
Electrical Tree

scholarly journals Electrical tree growth and partial discharge in epoxy resin under combined AC and DC voltage waveforms

2018 ◽  
Vol 25 (6) ◽  
pp. 2183-2190 ◽  
Author(s):  
Ibrahim Iddrissu ◽  
Simon M Rowland ◽  
Hualong Zheng ◽  
Zepeng Lv ◽  
Roger Schurch
Keyword(s):  
Epoxy Resin ◽  
Tree Growth ◽  
Partial Discharge ◽  
Dc Voltage ◽  
Electrical Tree

DC-Impulse Voltage-Dependent Electrical Tree Growth Characteristics of Epoxy Resin in LN2

2019 ◽  
Vol 29 (2) ◽  
pp. 1-5 ◽  
Author(s):  
Boxue Du ◽  
Meng Tian ◽  
Jingang Su ◽  
Tao Han ◽  
Wenbo Zhu ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Tree Growth ◽  
Growth Characteristics ◽  
Electrical Tree ◽  
Impulse Voltage ◽  
Voltage Dependent

scholarly journals Application of the Gaussian Mixture Model to Classify Stages of Electrical Tree Growth in Epoxy Resin

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2562
Author(s):  
Abdullahi Abubakar Mas’ud ◽  
Arunachalam Sundaram ◽  
Jorge Alfredo Ardila-Rey ◽  
Roger Schurch ◽  
Firdaus Muhammad-Sukki ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Gaussian Mixture Model ◽  
Mixture Model ◽  
Tree Growth ◽  
Asset Management ◽  
Gaussian Mixture ◽  
Growth Stages ◽  
Insulation Material ◽  
Electrical Tree ◽  
Electrical Trees

In high-voltage (HV) insulation, electrical trees are an important degradation phenomenon strongly linked to partial discharge (PD) activity. Their initiation and development have attracted the attention of the research community and better understanding and characterization of the phenomenon are needed. They are very damaging and develop through the insulation material forming a discharge conduction path. Therefore, it is important to adequately measure and characterize tree growth before it can lead to complete failure of the system. In this paper, the Gaussian mixture model (GMM) has been applied to cluster and classify the different growth stages of electrical trees in epoxy resin insulation. First, tree growth experiments were conducted, and PD data captured from the initial to breakdown stage of the tree growth in epoxy resin insulation. Second, the GMM was applied to categorize the different electrical tree stages into clusters. The results show that PD dynamics vary with different stress voltages and tree growth stages. The electrical tree patterns with shorter breakdown times had identical clusters throughout the degradation stages. The breakdown time can be a key factor in determining the degradation levels of PD patterns emanating from trees in epoxy resin. This is important in order to determine the severity of electrical treeing degradation, and, therefore, to perform efficient asset management. The novelty of the work presented in this paper is that for the first time the GMM has been applied for electrical tree growth classification and the optimal values for the hyperparameters, i.e., the number of clusters and the appropriate covariance structure, have been determined for the different electrical tree clusters.

Electrical tree growth in microsilica-filled epoxy resin

2020 ◽  
Vol 27 (3) ◽  
pp. 820-828
Author(s):  
Siyuan Chen ◽  
Zepeng Lv ◽  
James Carr ◽  
Malte Storm ◽  
Simon M. Rowland
Keyword(s):  
Epoxy Resin ◽  
Tree Growth ◽  
Electrical Tree
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