110 kV绝缘包覆引流线鸟粪闪络特性及仿真分析  

Flashover Characteristics and Simulation Analysis of Bird Droppings on 110 kV Insulated Coated Drainage Line

作　　者：毕茂强 张世宇 李凯 帅垭灵 杜迎春 刁志文 BI Maoqiang;ZHANG Shiyu;LI Kai;SHUAI Yaling;DU Yingchun;DIAO Zhiwen(School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;State Grid Ningxia Electric Power Co.,Ltd.,Wuzhong Power Supply Company,Wuzhong 751100,China)

机构地区：[1]重庆理工大学电气与电子工程学院,重庆400054 [2]国网宁夏电力有限公司吴忠供电公司,宁夏吴忠751100

出　　处：《湖南大学学报(自然科学版)》2025年第2期199-208,共10页Journal of Hunan University:Natural Sciences

基　　金：宁夏自然科学基金资助项目(2023AAC03849)。

摘　　要：为了降低鸟粪闪络事故发生的概率,开发了一种新型绝缘包覆引流线,采用高性能硅橡胶绝缘材料对钢芯铝绞线进行全面包覆,并在引流线表面加装伞裙.通过仿真分析硅橡胶绝缘层和鸟粪对引流线空间电场分布的影响,模拟实验研究了绝缘包覆引流线防鸟粪闪络特性.仿真结果表明,随着绝缘层厚度增加,其表面电场强度逐渐减小;半导体层厚度增加,引流线表面电场强度减小.实验结果表明,裸导线包覆绝缘层能显著提高引流线的绝缘性能,且硅橡胶绝缘包覆明显优于卡扣式硅橡胶绝缘护套;硅橡胶绝缘层的厚度每增加1 mm,击穿电压提高约10.7 kV,半导体层可以进一步提高绝缘性能;伞裙可有效阻止绝缘包覆引流线表面电弧的蔓延.To reduce the probability of such flashover accidents caused by bird droppings,a new type of insulated coated drainage line was developed.This line utilized high-performance silicone rubber insulating materials to fully coat the steel-cored aluminum strand,and an umbrella skirt was installed on the surface of the drainage line.Simulation analysis was conducted to examine the influence of the silicone rubber insulation layer and bird droppings on the spatial electric field distribution of the drainage line.The flashover characteristics of insulated coated drainage lines against bird droppings were studied by simulation test.The simulation results show that with the increase of the thickness of the insulating layer,the surface electric field intensity decreases gradually.As the thickness of the semiconductor layer increases,the electric field intensity on the surface of the drainage line decreases.The test results show that the insulation layer coated by bare wire can significantly improve the insulation performance of the drainage line,and the silicone rubber insulation coating is obviously better than the buckled silicone rubber insulation sheath.Every 1 mm increase in the thickness of the silicone rubber insulation layer results in breakdown voltage increases of about 10.7 kV,and the semiconductor layer can further improve the insulation performance.The umbrella skirt can effectively prevent the spread of the arc on the surface of the insulated coated drainage line.

关 键 词：绝缘材料 绝缘导线 电场仿真 鸟粪闪络 

分 类 号：TM726.1[电气工程—电力系统及自动化] TM281[一般工业技术—材料科学与工程]