变压器暂态饱和与和应涌流实例分析  

Analysis of Transient Saturation and Sympathetic Inrush of Transformers

作　　者：李德佳 王维俭[2] 毕大强[2] 

机构地区：[1]核电秦山联营有限公司,浙江海盐314300 [2]清华大学电机工程与应用电子技术系,北京100084

出　　处：《高压电器》2005年第1期12-15,共4页High Voltage Apparatus

摘　　要：通过一现场具体实例,探讨了和应涌流产生的机理及和应涌流与变压器暂态饱和的关系,分析了三相变压器励磁涌流波形、和应涌流波形与变压器暂态饱和的特征,探讨了和应涌流与变压器的暂态饱和对变压器差动保护的影响,提出了防止变压器差动保护误动的新方法。By analyzing a case in practice, this paper discusses the mechanism of sympathetic inrush and the relationship between sympathetic inrush and transient saturation in transformer. The characteristics of initial inrush current waveform, sympathetic inrush waveform and transient saturation of a three-phase transformer are analyzed. By studying the effects of sympathetic inrush and transient saturation on the differential protection of transformer, a new method is proposed to prevent the differential protection from mal-operation.

关 键 词：变压器 和应涌流 暂态饱和 差动保护 

分 类 号：TM41[电气工程—电器]