铁芯不接地对变压器绕组介质损耗因素和电容量测量的影响  

Influence of core ungrounding on dielectric loss and capacitance of transformer winding

作　　者：彭平[1] 周新军[2] 由凯[1] 

机构地区：[1]国网湖南省电力公司电力科学研究院,湖南长沙410007 [2]国网湖南省电力公司永州供电分公司,湖南永州425000

出　　处：《湖南电力》2016年第3期47-49,53,共4页Hunan Electric Power

摘　　要：从试验原理和变压器内部结构出发,采用等效电容的方法,对一起220kV变压器绕组介质损耗因素和电容量试验数据异常的案例进行分析,分析了铁芯不接地导致变压器绕组介质损耗因素和电容量测量结果异常的原因。Dielectric loss and capacitance measuring is an important method to check the condition of transformer insulation.The capacitance is also an important auxiliary parameters to judge the winding deformation. From the test principle and the internal structure of transformer,equivalent capacitance was used to analyze a case of abnormal dielectric loss and capacitance for a 220kV transformer, and the reason of abnormal dielectric loss and capatitance date causell by core ungrounling is analyzed.

关 键 词：介损 电容量 铁芯 绝缘 

分 类 号：TM407[电气工程—电器]