摘要
变压器安全稳定运行是电网安全的基础,绕组变形是影响变压器安全运行的主要影响因素之一。本文对变压器绕组遭受短路电流冲击后所受电动力进行分析,并进一步对短路阻抗、绕组电容量与变压器相邻绕组间几何距离的关联性进行了定性分析,得出基于低电压阻抗法与绕组电容量的变压器绕组变形综合诊断方法。利用此分析方法,可最终给出变压器是否可以继续运行的结论,如判断变压器不能继续运行,分析工作也将给大修工作提供依据。
The safe and stable operation of transformer is the basis of power grid security,and the winding deformation is one of the main factors that affect the safe operation of transformer.In this paper,the electrodynamic force of the transformer winding subjected to the impact of short-circuit current is analyzed,and the correlation between the short-circuit impedance,winding capacitance and the geometric distance between adjacent windings of the transformer is qualitatively analyzed.A comprehensive diagnosis method of transformer winding deformation based on the low-voltage impedance method and winding capacitance is obtained.Using this analysis method,the conclusion of whether the transformer can continue to operate can be finally given.For example,if the transformer can not continue to operate,the analysis work will also provide the basis for the overhaul work.
作者
刘一萌
祝丽花
LIU Yi-meng;ZHU Li-hua(Tianjin Polytechnic University,Tianjin 300387)
出处
《新型工业化》
2020年第2期1-5,共5页
The Journal of New Industrialization
关键词
变压器
绕组变形
低电压阻抗
绕组电容量
Transformer
Winding deformation
Low voltage impedance
Winding capacitance
