摘要
设计一种基于多传感器融合技术的电缆附件局部放电检测系统。系统基于高速采集卡的数据采集平台,通过超高频(UHF)传感器、超声波(AE)传感器和高频电流传感器(HFCT)的联合应用,实现对电缆绝缘状态的在线监测。同时,提出了一种局放信号去噪方法,可以将局部放电检测信号中纯噪声信号与局部放电脉冲信号区分开来,且不受局部放电脉冲个数和脉冲所在位置的限制。最后,构建了6类缺陷模型,分别研究其局部放电特征,并以此建立了数据库,为后续电缆局部放电研究提供参考依据。
A partial discharge(PD)detection system of cable accessories based on multi-sensor fusion technology was designed and implemented.Based on a high-speed acquisition card data acquisition platform,the detection system enables on-line detection of cable insulation conditions through the combination of ultra high frequency(UHF)sensors,ultrasonic(acoustic emission,AE)sensors and high frequency current transducers(HFCT).A PD signal denoising method was proposed,which can distinguish the pure noise signal part of the PD detection signal from the part containing the PD pulse signal,and it is not limited by the number of PD pulses and the position of the pulse.Finally,six defect models were constructed,and their partial discharge characteristics were studied separately.The database was established to provide a reference for the study of partial cable discharge.
作者
李方利
钱帅伟
毛振宇
王朋朋
杜璇
LI Fangli;QIAN Shuaiwei;MAO Zhengyu;WANG Pengpeng;DU Xuan(Guilin Power Supply Bureau,Guangxi Power Grid Co.,Ltd.,Guilin 541000,China;Shenyang Boyin Electric Power Design Co.,Ltd.,Shenyang 110046,China)
出处
《电器与能效管理技术》
2020年第6期53-60,75,共9页
Electrical & Energy Management Technology
关键词
电缆附件
在线监测
局部放电
多传感器
cable accessories
on-line monitoring
partial discharge
multi-sensor
