高压绝缘子在输电过程中的应用  

Application of High-Voltage Insulator on the Stress Control of Electric Transmission

作　　者：李锡伟 LI Xiwei(Lanzhou E-Power Electric Design Consulting Co.,Ltd.,Lanzhou,Gansu 730000,China)

机构地区：[1]兰州倚能电力设计咨询有限公司,甘肃兰州730000

出　　处：《自动化应用》2023年第16期146-149,共4页Automation Application

摘　　要：本文全面综述了国外文献中有关增强高压绝缘子周围电场因素的报道。首先,讨论了可能导致高压绝缘子周围电场应力增强的因素,如局部场的增强、机械应力和环境影响。这些因素会加速绝缘材料的老化并导致失效。然后,分析了现有的应力控制方法,如电晕环、组合绝缘组件和末端连接器设计。这些方法可以改善高压绝缘子的电气性能和可靠性,延长使用寿命。最后,介绍了一种全新、有前景的技术,即使用场分级方法进行应力控制。场分级材料通过添加无机填料到绝缘材料中提高其机械和电气性能。该技术表现出优于传统绝缘材料的电气性能。This paper presents a comprehensive review of reports in the foreign literature on factors that enhance the electric field around high-voltage insulators.Firstly,factors that may lead to the enhancement of electric field stresses around highvoltage insulators,such as the enhancement of local fields,mechanical stresses and environmental influences,are discussed.These factors can accelerate the deterioration of insulating materials and lead to failure.Existing stress control methods such as corona rings,combined insulation assemblies and end connector designs are then analyzed.These methods can improve the electrical performance and reliability of high-voltage insulators and extend their service life.Finally,a new promising technique for stress control by field-grading methods is presented.Field-graded materials improve their mechanical and electrical properties by adding inorganic fillers to the insulating material.This technique exhibits electrical properties superior to those of conventional insulating materials.

关 键 词：高压输电 应力控制 绝缘子 

分 类 号：TM216[一般工业技术—材料科学与工程]