基于空间电场特征的复合绝缘子运行状态识别方法研究  

Identification Method of Silicon Rubber Insulator Operation StateBased on Space Electric Field Characteristics

作　　者：韩学春 宋恒东 陈轩 冯欣欣 HAN Xuechun;SONG Hengdong;CHEN Xuan;FENG Xinxin(State Grid Jiangsu UHV Company,Nanjing 211102,China)

机构地区：[1]国网江苏超高压公司,南京211102

出　　处：《电瓷避雷器》2024年第1期170-176,共7页Insulators and Surge Arresters

基　　金：国网江苏省电力有限公司科技项目(编号:J2022097)。

摘　　要：恶劣气象条件地区的污闪事故仍时有发生,因此在对复合绝缘子污闪发展过程空间电场信号进行了测量的基础上,提出基于空间电场信号的污秽绝缘子运行状态识别方法。研究结果表明:污秽闪络整个放电过程可分为干燥区、湿润区、局部放电区三个区段;空间电场波形特征不因盐密的改变而变化,且空间电场时域波形的区段特征明显。最后提出基于空间电场的峰值、有效值和标准差,并结合温度、相对湿度组成五个特征量作为运行状态分类的特征量;案例结果表明本研究提出的空间电场特征的识别方法对污秽绝缘子运行状态可以进行可靠的分类,正确率为95%,可实现对运行状态的高准确率分类。Pollution flashover accidents still occur in areas with severe weather conditions.Therefore,based on the measurement of the spatial electric field signals during the development of composite insula⁃tor pollution flashover,the author proposes a method for identifying the operation status of polluted insula⁃tors based on spatial electric field signals.The results show that the whole discharge process of pollution flashover can be divided into three sections:dry section,wet section and partial discharge section.The waveform characteristics of space electric field do not change with the change of salt density,and the sec⁃tion characteristics of space electric field time domain waveform are obvious.Finally,based on the peak value,effective value and standard deviation of space electric field,combined with temperature and rela⁃tive humidity,five characteristic quantities are proposed as the characteristic quantities of operation status classification;The case results indicate that the recognition method of spatial electric field features pro⁃posed in this article can reliably classify the operating status of polluted insulators,with a accuracy rate of 95%,and can achieve high accuracy classification of the operating status.

关 键 词：复合绝缘子 放电 空间电场 污闪预测 

分 类 号：TM216[一般工业技术—材料科学与工程]