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A novel current transformer saturation detecting method based on parameter identification
Author(s): 
Pages: 38-43,87
Year: Issue:  18
Journal: Relay

Keyword:  参数识别电流互感器饱和离散度;
Abstract: 提出了一种基于参数识别的电流互感器(CT)饱和识别原理,通过对系统区外故障时的故障分量网络进行分析得知,保护安装处的电压和电流均满足一个等效的电感电路模型.当电流互感器没有饱和时,利用最小二乘法识别出的模型参数反映系统参数的真实值且数值稳恒不随时间变化;一旦电流互感器发生饱和,利用该侧电流识别出的模型参数的数值会出现剧烈波动,通过计算反映参数波动程度大小的离散度即可准确判别出CT饱和.新原理本身对...
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