涌流间相互作用对空投变过流保护的影响

摘要

分析了涌流间相互作用对励磁涌流衰减速度的影响，通过分析发现，由于和应涌流和励磁涌流的相互作用，致使空投变的励磁涌流衰减速度变慢，可能会导致了后备过流保护的误动。进一步的提出了应对措施。大量的仿真实验验证了结论的正确性。%The principle of interaction between sympathetic inrush and magnetizing inrush is analyzed in detail.Through the analy-sis, it is found that the interaction between sympathetic inrush and the inrush current can low the decay velocity of magnetizing in-rush significantly, and may cause the mis-operation of backup protection of the no-load transformer.Furthermore, the countermeas-ures are put forward.A large number of MATLAB simulations prove the method to be reasonable.