Chromatic Mapping of Partial Discharge Signals  

作　　者：M. Ragaa G. R. Jones A. G. Deakin J. W. Spencer 

机构地区：[1]Northern Powergrid, Castleford WF 10 5DS, UK [2]Department of Electrical Engineering and Electronics, Centre for Intelligent Monitoring Systems, University of Liverpool, Liverpool, L69 3G J, UK

出　　处：《高电压技术》2013年第10期2532-2540,共9页High Voltage Engineering

摘　　要：This contribution describes the use of chromatic techniques for quantifying signatures of partial discharges(PD).A brief description of the basis of chromatic monitoring is given along with explanations of how the approach may be applied for addressing signals produced by PDs.Laboratory test data from several sources for different types of PDs,operating conditions and geometries have been subjected to the chromatic procedures.These include a point-plane gap,a sphere in a liquid and treeing in a cable.Chromatic changes in PD signals have been investigated as a function of the amplitude of the alternating voltage producing the PD,the time duration before full electrical breakdown and for different forms of PDs.Results of the chromatic processing of these data are presented in the form of a number of chromatic maps relating to different quarter cycles of the alternating voltage producing the PDs.The results show the potential of the chromatic techniques for indicating the likelihood of full electrical breakdown and for distinguishing between certain forms of PDs.A summary of the chromatic processing procedures is presented for producing chromatic maps and for adaptation in further exploring PD signal features.This contribution describes the use of chromatic techniques for quantifying signatures of partial discharges （PD）. A brief descrip- tion of the basis of chromatic monitoring is given along with explanations of how the approach may be applied for addressing signals produced by PDs. Laboratory test data fi＇om several sources for different types of PDs, operating conditions and geometries have been sub- jected to the chromatic procedures. These include a point-plane gap, a sphere in a liquid and treeing in a cable. Chromatic changes in PD signals have been investigated as a function of the amplitude of the alternating voltage producing the PD, the time duration before full elec- trical breakdown and for different forms of PDs. Results of the chromatic processing of these data are presented in the form of a number of chromatic maps relating to different quarter cycles of the alternating voltage producing the PDs. The results show the potential of the chro- matic techniques for indicating the likelihood of full electrical breakdown and for distinguishing between certain forms of PDs. A summary of the chromatic processing procedures is presented for producing chromatic maps and for adaptation in further exploring PD signal fea- tures.

关 键 词：局部放电信号 PD信号 映射 交流电压 彩色地图 测试数据 几何形状 操作条件 

分 类 号：TM8[电气工程—高电压与绝缘技术] TN713.7[电子电信—电路与系统]