华侨大学学报（自然科学版）Issue(1)：21-26,6.DOI:10.11830/ISSN.1000-5013.2016.01.0021
采用高阶累积量的环网柜局部放电在线检测
On-Line Partial Discharge Detection of Ring Main Unit Using Higher-Order Cumulants
摘要
Abstract
According to the insulation defects of ring main unit,three kinds of typical partial discharge (PD)models were designed,and the PD test platform was built.With used radio frequency current sensor to obtain the mixed PD sig-nals,and the signals were sent to a microcomputer for processing after amplification and high-speed A/D sampling. Then,fourth-order cumulants were used as PD characteristic to suppress the random noise.Meanwhile,the signal to noise ratio (SNR)was improved.Detection criterion was determined by the Otsu algorithm in order to realize the on-line PD detection.The detection algorithm was transplanted to the field-programmable gated array (FPGA)and an on-line PD detection device for ring main unit was developed.The experimental results showed that the device could adapt to the strong noise environment,and had good effects of real-time detection.关键词
局部放电/高阶累积量/环网柜/放电模型/现场可编程门阵列/在线检测Key words
partial discharge/higher-order cumulants/ring main unit/discharge model/field programmable gate array/on-line detection分类
信息技术与安全科学引用本文复制引用
杨凯,樊真,张认成,杨建红,赵尚程,陈首虹..采用高阶累积量的环网柜局部放电在线检测[J].华侨大学学报（自然科学版）,2016,(1):21-26,6.基金项目
福建省产学合作科技重大项目（2012H6013）；福建省科技计划重点项目（2013H0028）；福建省泉州市科技计划重点项目 （）
