摘要
变压器绕组在受到短路冲击下,会出现明显的漏磁情况。通过软件仿真与实验验证的方法,对不同情况下绕组主空道处的漏磁情况进行分析,分别考虑轴向漏磁与径向漏磁下的磁场分布规律,总结变压器受到短路电流冲击的影响;对形变情况下的绕组进行分析,讨论其磁场分布情况与受力情况,对其抗短路能力进行探讨,结果证明形变后的绕组在两端位置更容易受到短路电流的冲击,需要利用相应措施加以防护,以保证电力系统运行的稳定。
The transformer winding will have obvious magnetic leakage under the impact of short circuit.Through the method of software simulation and experimental verification,the magnetic flux leakage at the main empty passage of the winding under different conditions is analyzed,and the magnetic field distribution law under axial and radial magnetic flux leakage is considered respectively,and the influence of short circuit current impact on the transformer is summarized.The winding under deformation is analyzed,and its magnetic field distribution and stress condition are discussed,and its short circuit resistance ability is discussed.The results show that the deformed winding is more vulnerable to the short circuit current impact at both ends,and corresponding measures need to be taken to protect it,so as to ensure the stability of power system operation.
作者
宋辉
苑龙祥
杨佳明
SONG Hui;YUAN Long-xiang;YANG Jia-ming(State Grid Xinjiang Company Limited Electric Power Research Institute,Urumqi 830011,China;不详)
出处
《电力电子技术》
北大核心
2023年第3期48-52,共5页
Power Electronics
基金
国家自然科学基金(51337002)
黑龙江省普通本科高等学校青年创新人才培养计划(UNPYSCT-2016162)。
关键词
变压器
漏磁
短路电流冲击
抗短路
transformer
magnetic flux leakage
short circuit current impact
short circuit resistance
