电测与仪表2018，Vol.55Issue(6)：76-81,6.
基于S-G滤波的电流互感器饱和检测
Current transformer saturation detection based on Savitzky-Golay filter
摘要
Abstract
new method of current transformer saturation detection based on Savitzky-Golay (S-G) filter is proposed.The method combines the traditional difference equation and the S-G filter,can accurately detect the saturation point of the current transformer in the condition of low signal noise ratio.On the basis of current transformer saturation start time,the current integration method can be used to accurately detect the end of current transformer saturation.The threshold value of the differential equation method combined with the S-G filter is derived,and the new method is simulated by PSCAD/EMTDC.The simulation results show that the current transformer saturation detection method based on S-G filter has the advantages of simple algorithm,high detection precision,strong anti-interference ability and so on.关键词
电流互感器饱和/S-G滤波器/差分方程/PSCAD仿真Key words
current transformer saturation/Savitzky-Golay filter/difference equation/PSCAD simulation分类
信息技术与安全科学引用本文复制引用
王凌云,李开成,肖厦颖,田肇光,孟庆旭,蔡德龙..基于S-G滤波的电流互感器饱和检测[J].电测与仪表,2018,55(6):76-81,6.基金项目
国家自然科学基金资助项目(51277080) （51277080）
