大型发电机定子棒绝缘内部缺陷的局部放电特性研究

Xiongwei Jiang, Gang Liu, Guangchun Zhang, Guangning Wu
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引用次数: 1

摘要

大型发电机定子棒绝缘内部一般存在四种缺陷,即空穴、内部分层、裂纹和导电边分层。可见,这四种内部缺陷出现在不同的老化阶段,在定子棒绝缘老化和最终失效中所起的作用也有显著差异。因此,区分它们是有意义的。本文对四种精细模型缺陷进行了局部放电实验,为缺陷类型的识别奠定了坚实的基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on PD characteristics of insulation internal defects of large generator stator bar
Generally there are four types of defects inside the stator bar insulation of large generators, i.e. void, internal delamination, crack and delamination at conduct edge. It's evident that these four types of internal defects appear at the different stages of aging and play significantly different roles in the aging and ultimate failure of stator bar insulation. Thus it makes sense to distinguish them. In this paper, partial discharge experiments were performed on four elaborate model defects to establish a firm basis for the recognition of defect type.
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