摘要
针对现有方法存在调整所用时间较长,计算得到的短路阻抗与实际短路阻抗之间误差较大的问题,提出多绕组变压器短路阻抗测试异常调整算法。分析多绕组变压器的绕组振动特性,根据绕组振动特性、绕组振动在油中的传播特性以及绕组振动传播特性构建变压器的等效单匝电感矩阵,通过该矩阵获得多绕组变压器的短路阻抗以及绕组中的环流情况,从而实现对多组变压器短路阻抗测试异常的调整。实验结果表明,与现有方法相比,所设计算法所得的阻抗误差较低,验证了上述算法的调整结果更加可靠,调整效率更高,且不易受干扰条件影响,说明所提算法应用效果较好。
There are many defects in the traditional algorithm,such as long adjustment time,and large error between the calculated short-circuit impedance and the actual short-circuit impedance.In this regard,this paper proposes an abnormal adjustment algorithm for short-circuit impedance test of multi-winding transformer.The winding vibration characteristics of multi winding transformer were analyzed.The equivalent single turn inductance matrix of the transformer was established via the vibration characteristics of the winding,the transmission characteristics of the winding vibration in oil and the vibration propagation characteristics of the winding.According to the short-circuit impedance of the multi-winding transformer and the circulating current in the winding,the abnormal short-circuit impedance of the multi-group transformer can be adjusted.The results show that the algorithm has low impedance error,reliable adjustment results,high adjustment efficiency,and is not facile to be affected by interference conditions,which indicates that the application effect of the algorithm is excellent.
作者
刘子溢
徐丽
LIU Zi-yi;XU Li(University of Detroit Mercy,Engineering,Michigan Detroit 48221,America;School of Computer,Hubei University of Technology,Hubei Wuhan 430070,China)
出处
《计算机仿真》
北大核心
2021年第1期67-70,87,共5页
Computer Simulation
关键词
多绕组
变压器
短路阻抗
异常调整
振动特性
等效单匝电感矩阵
Multi-winding
Transformer
Short circuit impedance
Abnormal adjustment
Vibration characteristics
Equivalent single-turn inductance matrix
