用阶跃应力试验估计交联聚乙烯及其纳米复合材料在交流电压下的老化参数

2016 IEEE International Conference on Dielectrics (ICD) Pub Date : 2016-07-03 DOI:10.1109/ICD.2016.7547702

Y. Wang, Kai Wu, Jinhua Dong, Chong Zhang, Wenpeng Li

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引用次数: 1

摘要

我们之前的研究表明，XLPE的老化参数n值与XLPE纳米复合材料的老化参数n值有很大的不同。为了研究空间电荷对直流电压下老化参数的影响，本文在交流电压下测量了XLPE及其纳米复合材料的n值，因为在交流电压下样品中几乎没有空间电荷。在交流电压下进行阶梯应力试验，测量n值。结果表明:XLPE及其纳米复合材料在交流电压下的老化参数接近，分别为7.3和6.6;这表明空间电荷积累在直流老化中起重要作用。

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Estimating aging parameter of XLPE and its nanocomposites under AC voltage using step-stress test

Our previous studies showed that the aging parameter, i.e. the n-value, of XLPE was quite different from that of XLPE nanocomposites. In order to investigate the effects of space charge on aging parameter under DC voltage, the n-values of XLPE and its nanocomposites were measured under AC voltage in this report, because few space charge exits in the sample under AC voltage. Step-stress tests were carried out under AC voltage to measure the n-value. The results showed that the aging parameters of XLPE and its nanocomposites under AC voltage were close, i.e. 7.3 and 6.6, respectively. This suggests that space charge accumulation plays an important role in DC aging.

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2016 IEEE International Conference on Dielectrics (ICD)

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