Silicone Rubber Insulators for Polluted Environments Part 1: Enhanced Artificial Pollution Tests
Silicone Rubber Insulators for Polluted Environments Part 1: Enhanced Artificial Pollution Tests
复制标题
DOI：
10.1109/tdei.2013.004015
复制
发表时间：
2014-04-01
影响因子：
3.1
通讯作者：
Waters, R. T.
中科院分区：
文献类型：
--
作者：
Charalampidis, P.;Albano, M.;Waters, R. T.
用于室外绝缘的聚合物材料的开发得到了现有标准实验室测试（例如斜面程序）的很大帮助。该位置是不太令人满意的优化方面的绝缘子配置文件和最小的统一特定爬电距离（USCD）的选择，为一个给定的网站污染的严重程度（SPS）。目前正在修订的标准测试被声明为“不直接适用于聚合物绝缘子”。因此，迫切需要这样的测试来区分不同外壳材料和轮廓的硅橡胶绝缘子的污染性能，以量化污染严重程度和闪络电压的反比关系，并评估润湿率的影响。合适的测试策略还可以避免过度闪络对外壳造成损坏。这里提出了一种新的测试程序来实现这些目标。这并不局限于闪络电压测量。采用高分辨率数据采集系统对11kV硅橡胶绝缘子试验过程中施加的试验电压和泄漏电流波形进行监测和存储。这一改进为人工污秽试验中绝缘子的定量比较提供了进一步的依据，因为试验结果证实了闪络电压与闪络前泄漏电流之间的反比关系。第二部分展示了11 kV硅橡胶绝缘子表面织构化以提高USCD值时的污秽性能。
The development of polymeric materials for outdoor insulation has been much aided by existing standard laboratory tests such as inclined-plane procedures. The position is less satisfactory in respect of the optimization of insulator profiles and the choice of the minimum unified specific creepage distance (USCD) for a given site pollution severity (SPS). Standard tests currently under revision are stated to be 'not directly applicable to polymeric insulators'. Such tests are, therefore, urgently needed to discriminate the pollution performance of silicone-rubber insulators of different housing materials and profiles, to quantify the inverse relationship of pollution severity and flashover voltage and to assess the influence of wetting rate. A suitable test strategy would also avoid housing damage from excessive flashovers. A new test procedure is presented here to achieve these objectives. This is not confined to flashover voltage measurements. A high-resolution data acquisition system is used to monitor and store the waveforms of the applied test voltage and leakage current throughout tests on 11kV silicone-rubber insulators. This enhancement provides a further basis for the quantitative comparison of insulators in artificial pollution testing, because the results corroborate the inverse relationship between flashover voltage and pre-flashover leakage current.Part 2 demonstrates the pollution performance of 11kV silicone-rubber insulators when surface texturing is used to increase USCD values.