大型变压器低频加热中铁心饱和问题研究  

Study on Iron Core Saturation of Large Transformers in Low Frequency Heating

作　　者：李敏[1] 谢齐家[2] LI Min;XIE Qijia(China Electric Power Research Institute,Wuhan Hubei 430074,China;State Grid Hubei Electric Power Research Institute,Wuhan Hubei 430077,China)

机构地区：[1]中国电力科学研究院,湖北武汉430074 [2]国网湖北省电力公司电力科学研究院,湖北武汉430077

出　　处：《湖北电力》2016年第7期1-5,21,共6页Hubei Electric Power

摘　　要：针对低频加热频率过低可能导致铁心饱和的问题,研究了低频短路法加热中变压器铁心饱和的影响因素,提出了可直观判断铁心饱和状态的B-H曲线绘制方法和铁心饱和临界频率计算公式,并通过实验和特高压换流变压器现场低频加热的应用进行了验证。In this paper, the influence factors of transformer core saturation in low frequencyshort circuit method are studied. A method to draw the B-H curve of the saturation state of theiron core and the formula for calculating the critical frequency of iron core saturation are presentedin this paper. The formula is verified in experiments and the field application of the low frequencyheating of the UHV converter transformer.

关 键 词：低频加热 特高压换流变压器 铁心饱和 频率 

分 类 号：TM81[电气工程—高电压与绝缘技术]