高频与振荡波检测技术在电缆局部放电定位中的综合应用  

Comprehensive Application of High Frequency And Damped AC Technology In Cable Partial Discharge Location

作　　者：李旭[1] 朱明正[1] 李季[2] 孟峥峥[1] 于洋[1] LI Xu;ZHU Mingzheng;LI Ji;MENG Zhengzheng;YU Yang(State Grid Tianjin Electric Power Research Institute,Tianjin 300384,China;State Grid Tianjin Electric Power Corporation,Tianjin 300010,China)

机构地区：[1]国网天津市电力公司电力科学研究院,天津300384 [2]国网天津市电力公司,天津300310

出　　处：《河北电力技术》2021年第1期42-45,共4页Hebei Electric Power

基　　金：国网天津市电力公司科技项目《电缆振荡波、超低频局部放电精益化诊断技术研究》(KJ 19-1-02)。

摘　　要：电力电缆作为大型城市电网中的联络枢纽,为城市发展发挥了重要作用,但由于设备质量、安装工艺等原因,造成的电缆附件故障时有发生。结合一起现场测试案例,通过应用高频与振荡波2种局部放电检测技术,介绍一起35kV电缆中间接头局部放电缺陷的定位与诊断分析过程,并分析局部放电信号的图谱特征,对后期现场测试提出建议。As the connection hub of large-scale urban power grid,power cable plays an important role in urban development.However,due to the equipment quality,installation process and other reasons,cable accessories failure occurs from time to time.In this paper,combined with a test case,through the comprehensive use of high frequency and damped AC PD detection technology,the positioning and diagnosis analysis process of PD defects in a cable joint of 35 kV cable is introduced,and the spectral characteristics of PD signals are analyzed,and suggestions for later test are put forward.

关 键 词：电缆 高频 振荡波 局部放电定位 

分 类 号：TM247[一般工业技术—材料科学与工程]