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Degradation and Stability of Polymeric High-VoltageInsulators and Prediction of Their Service Life through Environmentaland Accelerated Aging Processes

机译:聚合物高压的降解和稳定性绝缘子及其对环境的使用寿命预测和加速老化过程

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摘要

Polymeric composite insulators consisting of core fiber reinforced polymer insulators covered with polydimethylsiloxane (PDMS) housing are now replacing conventional ceramic insulators especially for high-outdoor power transmission lines due to some specific advantages. Unlike ceramics, polymers have relatively shorter life. Outdoor insulators experience different electrical, mechanical, chemical, and thermal stresses during service. The long-term service performance of these insulators and their service life estimation is an important issue, but it is complicated and time-consuming. The objective of the present investigation is to check the rate of property deterioration during service and to find the approximate lifetime. Working insulators with different ages were collected from service, and the changes in mechanical and electrical properties and hydrophobicity of the PDMS cover against aging time were measured. The service life estimated from the change in mechanical properties and surface hydrophobicity (using MATLAB software) was compared with the service life of a new compound subjected to acceleratedaging tests. Prediction of service life is helpful for replacementof aged insulators from service to avoid interruption in power transmission.
机译:由聚二甲基硅氧烷(PDMS)外壳覆盖的芯纤维增强聚合物绝缘子组成的聚合物复合绝缘子由于某些特殊的优势,正逐渐取代传统的陶瓷绝缘子,特别是用于高户外输电线路。与陶瓷不同,聚合物的寿命相对较短。室外绝缘子在使用过程中会承受不同的电气,机械,化学和热应力。这些绝缘子的长期使用性能及其使用寿命估算是一个重要的问题,但它既复杂又费时。本研究的目的是检查服务期间的性能恶化率,并找出使用寿命。从服务中收集了不同使用年限的工作绝缘子,并测量了PDMS覆盖层的机械和电气性能以及疏水性随老化时间的变化。根据机械性能和表面疏水性的变化(使用MATLAB软件)估算的使用寿命与经过加速处理的新化合物的使用寿命进行了比较老化测试。使用寿命预测有助于更换停止使用老化的绝缘子,以避免电力传输中断。

著录项

  • 期刊名称 ACS Omega
  • 作者单位
  • 年(卷),期 2018(3),9
  • 年度 2018
  • 页码 11317–11330
  • 总页数 14
  • 原文格式 PDF
  • 正文语种
  • 中图分类
  • 关键词

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