A comparison between PSA plots of partial discharges in needle voids and electrical trees
A comparison between PSA plots of partial discharges in needle voids and electrical trees
复制标题
针孔局部放电 PSA 图与电树的比较
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
J. Fothergill
中科院分区：
文献类型：
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作者：
N. Chalashkanov;S. Dodd;L. Dissado;J. Fothergill
本研究的目的是研究环氧树脂样品中电极结合空洞和电树获得的局部放电（PD）数据的脉冲序列分析（PSA）图的差异。对一组含针孔的环氧树脂样品进行了放电试验，该样品是通过部分提取钨针电极获得的。本研究使用了两种环氧树脂体系：Araldite CY1301和Araldite CY1311。这两种树脂具有不同的介电性能，从而可以研究材料电导率对空隙放电活性的影响。互补电树生长实验进行了一组样品与传统的针平面电极配置。研究了材料性能、温度和介质样品吸湿率的影响。结果表明，为了实现可靠的诊断工具，需要额外的材料表征来补充PSA图。
The aim of this study was to investigate the difference in the pulse sequence analysis (PSA) plots of partial discharge (PD) data obtained from electrode-bound voids and electrical trees in epoxy resin samples. Electrical discharge tests were performed on a set of epoxy resin samples containing needle voids, which were obtained by a partial extraction of tungsten needle electrode. Two epoxy resin systems were used in this study, Araldite CY1301 and Araldite CY1311. The two resins have different dielectric properties, which allowed the effect of material conductivity on the discharge activity in the void to be investigated. Complementary electrical tree growth experiments were performed on a set of samples with a conventional needle-plane electrode configuration. The effects of the material properties, temperature and moisture absorbed in the dielectric samples were also investigated. The results show that additional material characterization is needed to supplement the PSA plots in order to achieve a reliable diagnostic tool.