Radial Stability of Large Transformer Windings under Multiple Inrush Conditions

被引：0
|
作者：
Zhang B. [1 ]
Li Y. [1 ]
机构：
[1] National Engineering Research Center of Special Electrical Machines, Shenyang University of Technology, Shenyang
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2017年 / 32卷
关键词：
Build-up effect; Large transformer; Multiple short-circuit inrush; Nonlinear buckling;
D O I：
10.19595/j.cnki.1000-6753.tces.160110
中图分类号：
学科分类号：
摘要：
A three dimensional finite element model of the short-circuit test transformer was established in this paper, the short circuit varies was calculated considering elastic plastic with the nonlinear buckling analysis method, and the calculation results were verified by the experimental displacement measurement. Then, for the cumulative effect of multiple short circuit impact, the problem of multiple short circuit loss was studied by using the method of buckling analysis, Finally, the influence of the number of short circuit and the support structure failure on the short-circuit stability was stated by comparing the safety factor. The results show that the simulation can accurately calculate the displacement value of the transformer short-circuit test, the error is not more than 10%, the number of short circuit impact on the safety factor of the radical instability. © 2017, The editorial office of Transaction of China Electrotechnical Society. All right reserved.
引用
收藏
页码：71 / 76
页数：5
相关论文
共 13 条
  • [1] Amit B., Kulkarni S.V., Analysis of buckling strength of inner windings in transformers under radial short-circuit forces, IEEE Transactions on Power Delivery, 29, 1, pp. 241-245, (2014)
  • [2] Liang Z., Tang R., The field-circuit coupled model of a three-phase power transformer and its sudden short-circuit procedure calculation, Transactions of China Electrotechnical Society, 19, 3, (2004)
  • [3] Wang S., Kou X., Liu J., Et al., The study of radial buckling properties on inner winding of power transformer, High Voltage Engineering, 30, 1, pp. 1-3, (2004)
  • [4] Hiroyuki K., Hiroshi M., Shigeru S., Buckling strength analysis of large power transformer windings subjected to electromagnetic force under short circuit, IEEE Transactions on Power Apparatus and Systems, 99, 3, pp. 1288-1298, (1980)
  • [5] Zhong J., Xin Z., Short circuit strength of large capacity transformer inner windings, Journal of North China Electric Power University, 29, pp. 56-59, (2002)
  • [6] Zhang J., Liu L., Liu D., Et al., A method of simulating the fault current using field-circuit coupling for partially short-circuited transformer winding, Transactions of China Elec-trotechnical Society, 30, 20, pp. 65-70, (2015)
  • [7] Yang L., Sun J., Liu W., Et al., Transformer inter-turn short circuit modeling and its application, Power System Protection and Control, 42, 8, pp. 140-145, (2014)
  • [8] Chen X., Transformer sudden short circuit based on Ansoft finite element analysis of leakage magnetic field, Electrical Engineering, 16, 3, (2015)
  • [9] Tian M., Yang X., Yuan D., Et al., Short-circuit reactances of a controllable reactor of multi-parallel branch type's influence on its branch reactances and currents, Transactions of China Electrotechnical Society, 29, 7, pp. 237-243, (2014)
  • [10] He J., He J., Wang G., Et al., Impedance backup protection for UHV large capacity trans-formers, Power System Protection and Control, 42, 22, pp. 1-8, (2014)
12