Lessons from Three-Dimensional Imaging of Electrical Trees
Lessons from Three-Dimensional Imaging of Electrical Trees
复制标题
电力树三维成像的经验教训
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
J. Carr
中科院分区：
文献类型：
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作者：
S. Rowland;Siyuan Chen;Hualong Zheng;Z. Lv;J. Carr
电树是高电场中聚合物绝缘老化产生的伪影。虽然关于它们生长的机制存在一些争论，但毫无疑问，它们的生长会导致主机绝缘的最终失效。电树枝的研究主要局限于测量相关的局部放电和光学观察树结构的物理生长。本文综述了在实验室中观测树木生长的进展。特别是，考虑到产生三维副本的真实的树木从X射线计算机断层扫描（XCT）和串行块面扫描电子显微镜（SBFSEM）的好处，以及如何这些可以促进更好地了解树的发展机制。它的结论是，两个和三维成像是必需的，这些需要与局部放电测量开发模型的树木生长和有效的资产管理工具。
Electrical trees are artifacts resulting from aging of polymeric insulation in high electrical fields. Whilst there is some debate concerning the mechanism by which they grow, there is no doubt that their growth can lead to the ultimate failure of the host insulation. Studying electrical trees is mainly confined to measurement of associated partial discharges and observing the physical growth of the tree structure optically. This paper reviews developments in observations of the growth of trees in the laboratory. In particular, consideration is given to the benefits of generating three-dimensional replicas of real trees from X-ray computed tomography (XCT) and serial block face scanning electron microscopy (SBFSEM), and how these can facilitate better understanding of tree development mechanisms. It is concluded that both two- and three-dimensional imaging are required, and these need correlating with partial discharge measurements to develop models of tree growth and effective asset management tools.