鸟啄损伤对复合绝缘子运行性能的影响研究  

Effect of bird pecking damage on operation performance ofcomposite insulator

作　　者：卢明 高超 杨曜成[2] 李黎 盛从兵[3] 张世尧[1] LU Ming;GAO Chao;YANG Yaocheng;LI Li;SHENG Congbing;ZHANG Shiyao(State Grid Henan Electric Power Research Institute,Zhengzhou 450052,China;School of Electrical and Electronic Engineering HUST,Wuhan 430070,China;State Grid Puyang Power Supply Company,Puyang 457000,China)

机构地区：[1]国网河南省电力公司电力科学研究院,河南郑州450052 [2]华中科技大学电气与电子工程学院,湖北武汉430070 [3]国网濮阳供电公司,河南濮阳457000

出　　处：《绝缘材料》2024年第3期113-120,共8页Insulating Materials

摘　　要：复合绝缘子因其性能优越得以在电网领域广泛应用,目前由于鸟类数量增加,鸟啄复合绝缘子的情况日益严重,鸟啄后绝缘子结构遭到破坏,会造成电网线路故障,因此本文研究鸟啄损伤对复合绝缘子性能的影响,为电网运维管理提供参考。首先通过试验对复合绝缘子鸟啄后机电性能进行分析;然后通过人工模拟鸟啄伞裙损伤来研究不同受损占比、不同受损数量对复合绝缘子沿面电场强度与污闪电压的影响;最后开展复合绝缘子护套电蚀损实验、酸浸实验、热老化试验,评估护套损伤对复合绝缘子性能的影响规律。结果表明:鸟啄后复合绝缘子结构遭到破坏,其电气性能、力学性能和防污性能都受到影响,同时护套损伤后,在局部场强、水分、酸、放电产热、机械应力等诸多因素共同作用下,芯棒材料劣化降解,芯棒力学性能下降,存在复合绝缘子异常断裂的风险。Composite insulators are widely used in the field of power grid because of their superior performance.At present,due to the increase of the number of birds,the situation of bird pecking composite insulators is becoming increasingly serious,and the insulator structure is damaged after bird pecking,which will cause power grid line faults.Therefore,this paper studies the effect of bird pecking damage on the performance of composite insulators,and provides reference for power grid operation and maintenance management.Firstly,the mechanical and electrical properties of composite insulator after bird pecking were analyzed by experiments.Then,the effects of different damage proportions and different damage number on the surface electric field strength and pollution flashover voltage of composite insulators were studied by artificial simulation of bird pecking umbrella skirt damage.Finally,the electric erosion test,acid immersion test,and thermal ageing test of composite insulator sheath were carried out to evaluate the effect of sheath damage on the properties of composite insulator.The results show that the structure of the composite insulator is damaged after bird pecking,and its electrical properties,mechanical properties,and anti-fouling properties will be affected.At the same time,after the sheath is damaged,under the joint action of many factors such as local field strength,moisture,acid,discharge heat production,and mechanical stress,the core rod material deteriorates and degrades,the mechanical properties of the core rod decrease,and there is a risk of abnormal fracture of the composite insulator.

关 键 词：复合绝缘子 鸟啄损伤 伞裙损伤 护套损伤 

分 类 号：TM216[一般工业技术—材料科学与工程]