电测与仪表2016，Vol.53Issue(17)：1-5,17,6.
电流互感器的饱和区间定位研究
Research on locating saturation of current transformer
摘要
Abstract
If a current transformer saturates when transforming the heavy current , there are sections when the magnetic core is saturated , thus leading to enormous measurement errors .The errors have a huge negative effect on the relay protection and electrical measurements .In order to correct the errors , instants of saturation and moments when the sat-uration ends need to be detected .This paper proposes a new method to identify the saturation moments .It shows the way based on three-order difference to predict the signals of secondary current .If the prediction value is not equal to the measurement value , the saturation moment is detected .In addition , this paper presents a saturation criterion to enhance the detection accuracy .It can overcome the effect of noises and sudden change of sample values .The method is verified through the simulations based on Matlab platform and its maximum error is only 0 .78 ms when processing steady saturation .关键词
饱和识别/饱和判据/稳定性Key words
saturation identification/saturation criterion/stability分类
信息技术与安全科学引用本文复制引用
许峰,李开成,金波,王可..电流互感器的饱和区间定位研究[J].电测与仪表,2016,53(17):1-5,17,6.基金项目
国家自然科学基金资助项目 （）
