多种布设方式下交流220 kV线路瓷绝缘子劣化判别的仿真与实测研究  

Simulation and measurement of deteriorated porcelain insulator discrimination for AC 220 kV transmission lines under multiple layout methods

作　　者：刘嵘 戴建强 李珊 赵龙 林建 刘洋 王浩[3] 刘学忠[3] LIU Rong;DAI Jianqiang;LI Shan;ZHAO Long;LIN Jian;LIU Yang;WANG Hao;LIU Xuezhong(State Grid Shandong Electric Power Company Electric Power Research Institute,Jinan 250002,China;State Grid Shandong Electric Power Company Linyi Power Supply Company,Linyi 276000,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250002 [2]国网山东省电力公司临沂供电公司,山东临沂276000 [3]西安交通大学电工材料电气绝缘全国重点实验室,陕西西安710049

出　　处：《绝缘材料》2024年第7期127-134,共8页Insulating Materials

基　　金：国网山东省电力公司科技项目(520607220007)。

摘　　要：为提高线路瓷质绝缘子劣化带电检测的准确性,本文研究了布设方式和劣化程度对高压交流绝缘子串电压分布特征的影响。首先,建立交流220 kV瓷绝缘子串在不同布设方式下单电压分布的有限元仿真计算模型,并仿真分析绝缘子串电压分布的特征。然后,结合实际测量得到的山东省交流220 kV输电线路绝缘子串电压分布,验证仿真计算结果与实测结果的一致性。结果表明:输电电路杆塔塔型、绝缘子串片数及布置方式、劣化绝缘子位置及劣化程度等因素对绝缘子串电压分布特征及劣化判别有较大影响,其中不同塔型最大分布电压差可达到35%。不同布置方式最大分布电压差可达到18%,通过分布电压下降比例可判断不同位置绝缘子劣化情况。In order to improve the accuracy of live detection of line porcelain insulator degradation,the influences of layout methods and deterioration degree on the voltage distribution characteristics of high-voltage AC insulator strings were studied in this paper.Firstly,a finite element simulation calculation model with single voltage distribution of AC 220 kV porcelain insulator strings under different layout methods was established,and the voltage distribution characteristics of the insulator strings were simulated and analyzed.Then,combined with the actual measured voltage distribution of 220 kV AC transmission line insulator string in Shandong province,the consistency between simulation calculation and actual measurement was verified.The results show that the tower type of transmission circuit,the number and layout method of the insulator string,and the position and deterioration degree of the degraded insulator have great effects on the voltage distribution characteristics and deterioration discrimination of the insulator strings.Among them,the maximum distributed voltage difference of different tower types can reach 35%,and the maximum distributed voltage difference of different layout methods can reach 18%.The deterioration situation of insulators at different positions can be judged by the distribution voltage drop ratio.

关 键 词：线路瓷绝缘子 布设方式 劣化判别 电压分布 

分 类 号：TM216[一般工业技术—材料科学与工程]