摘要
特高频(UHF)局部放电检测技术取得了广泛应用,但不同产品的检测结果量纲表示方法不统一,相互之间缺乏可比性,从而难以对此类检测系统性能进行统一有效的量化评价。本文重点探讨了局部放电特高频检测的量纲问题,基于局部放电特高频信号的物理本质和局部放电UHF耦合器的特性,提出了采用"局部放电辐射信号的脉冲电场强度幅值"来表征特高频局部放电信号强度的思想。通过对当前主流局部放电特高频检测产品的量纲表示进行了深入的解析,探讨了以电场强度的量纲"uV/m"来统一局部放电特高频检测结果的技术可行性。
UHF partial discharge （PD） detection technology is applied widely, but for different products, because of dif- ferent detection dimensions which cause the incomparability of results, it＇s difficult to evaluate on such detection systems with common quantitative method. Therefore, the expres- sion of partial discharge UHF detection is discussed mainly in this paper. Based on the physical nature of the partial dis- charge UHF signal and the characteristics of UHF coupler, the idea of using the amplitude of pulse electric field for PD radiation signal is proposed to represent the UHF PD inten- sity. Through further analysis on the representations of ma- jor UHF PD detection products, the possibility of represen- ting UHF PD results with ＇uV/m＇ is disciassed.
出处
《现代电力》
北大核心
2014年第1期74-78,共5页
Modern Electric Power
关键词
GIS
局部放电
灵敏度
标定
量纲
特高频
GIS
partial discharge （PD）
sensitivity
cali-bration
dimension
ultra high frequency（UHF）
