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由电流互感器饱和引起差动保护误动的分析及试验方法

CHE Chi,BAI Xue,ZHANG Xiang-ming,BAI Run-bo

Journal of Shenyang Institute of Engineering(Natural Science)（2007）

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Abstract
针对发电厂过高压厂用变压器或起动-备用变压器在区外故障时或厂用大容量电动机起动时差动保护误动作的情况,着重介绍了通过电流互感器伏安特性试验确定其饱和特性的方法,并用试验验证了该方法的可行性.同时,提出了关于避免差动保护因电流互感器饱和而误动的措施.
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Key words
current transformers,malfunction,differential protection,saturation,voltage-ampere experiment
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