超高压输电线路复合绝缘子性能老化评估
|
摘要
为及时了解在运复合绝缘子运行状态、系统评估电力网运行可靠性,2016年相关运行单位依据南方电网有关规定对超高压输电线路运行环境较为复杂的复合绝缘子进行抽样检测,测试内容共分为材料性能、电气性能和机械性能三项。测试结果表明,复合绝缘子在镀锌层厚度、水煮后陡波冲击、机械破坏负荷和端部密封性这四方面的性能未随运行年限的增加而出现明显老化;复合绝缘子性能老化主要体现在憎水性、带护套芯棒水扩散、伞裙漏电起痕、芯棒护套粘结性这几个方面,且性能老化程度与绝缘子运行年限表现出一定的正相关性。!
In order to timely grasp the operational status of the composite insulators and systematically evaluate the operation stability of the power grid,relevant operating department samples and examines the composite insulators of ultrahigh voltage transmission lines according to the relevant provisions in 2016.The test items include material properties,electrical properties and mechanical properties.The test results show that the performance of the composite insulators in the four aspects of the thickness of zinc coating,steep wave impact after boiled,mechanical failure load and end sealing performance did not significantly deteriorate with the increase of operating years;The aging performance of composite insulators mainly reflected in the four aspects of the hydrophobicity,sheath core rod water diffusion,umbrella skirt creepage,core rod sheath adhesion,and there is a certain positive correlation between the degree of aging performance and insulator operating years.
In order to timely grasp the operational status of the composite insulators and systematically evaluate the operation stability of the power grid,relevant operating department samples and examines the composite insulators of ultrahigh voltage transmission lines according to the relevant provisions in 2016.The test items include material properties,electrical properties and mechanical properties.The test results show that the performance of the composite insulators in the four aspects of the thickness of zinc coating,steep wave impact after boiled,mechanical failure load and end sealing performance did not significantly deteriorate with the increase of operating years;The aging performance of composite insulators mainly reflected in the four aspects of the hydrophobicity,sheath core rod water diffusion,umbrella skirt creepage,core rod sheath adhesion,and there is a certain positive correlation between the degree of aging performance and insulator operating years.
引文
[1]梁英,崔春艳,易春芳,等.复合绝缘子老化状态精细评估中的取样方法[J].电网技术,2015,39(2):530-535.
[2]陈奇.高压复合绝缘子应用及老化状态研究综述[J].绝缘材料,2016,49(4):7-13,18.
[3]薄学微,任贵清,张福刚.直流复合绝缘子长期老化性能分析[J].电网技术,2006,30(12):109-111,115.
[4]DL/T 1000.3-2015,标称电压高于1 000V架空线路用绝缘子使用导则第3部分:交流系统用棒形悬式复合绝缘子[S].北京:中国电力出版社,2015.
[5]GB/T 19519-2014,架空线路绝缘子标称电压高于1 000V交流系数用悬垂和耐张复合绝缘子定义、试验方法及接收准则[S].北京:中国质检出版社,2014.
[2]陈奇.高压复合绝缘子应用及老化状态研究综述[J].绝缘材料,2016,49(4):7-13,18.
[3]薄学微,任贵清,张福刚.直流复合绝缘子长期老化性能分析[J].电网技术,2006,30(12):109-111,115.
[4]DL/T 1000.3-2015,标称电压高于1 000V架空线路用绝缘子使用导则第3部分:交流系统用棒形悬式复合绝缘子[S].北京:中国电力出版社,2015.
[5]GB/T 19519-2014,架空线路绝缘子标称电压高于1 000V交流系数用悬垂和耐张复合绝缘子定义、试验方法及接收准则[S].北京:中国质检出版社,2014.