CAJ | 학술논문

以单台变压器合闸励磁涌流原理为基础，结合变压器在实际操作中的情况，进一步研究多台变压器的合闸涌流。根据多台变压器空载合闸的特点提出了增加系统阻抗和串联电容器的方法。通过对比增加系统阻抗后变压器之间磁链变化分析了其对励磁涌流的影响并介绍了选择最佳阻抗值的方法。最后结合仿真软件 Matlab仿真了多台变压器同时合闸的励磁涌流并与加载单一电阻方案和电阻加电容器方案的励磁涌流大小进行对比。仿真结果表明，这种抑制方案有效地抑制了多台变压器的励磁涌流。
이단태변압기합갑려자용류원리위기출，결합변압기재실제조작중적정황，진일보연구다태변압기적합갑용류。근거다태변압기공재합갑적특점제출료증가계통조항화천련전용기적방법。통과대비증가계통조항후변압기지간자련변화분석료기대려자용류적영향병개소료선택최가조항치적방법。최후결합방진연건 Matlab방진료다태변압기동시합갑적려자용류병여가재단일전조방안화전조가전용기방안적려자용류대소진행대비。방진결과표명，저충억제방안유효지억제료다태변압기적려자용류。
Taking no-load closing inrush current theory of a single transformer as a foundation, combined with the transformer of the situation in practice, this paper further studies transformer group inrush current. Based on transformer group no-load closing characteristics, it proposes to increase the system impedance and capacitors. Through contrasting the flux changes between the transformer before/after increasing system impedance, it analyzes its impact on the inrush current and describes a method to select the best impedance values. Finally, no-load closing inrush current of transformer group simutaneously switch-on is simulated by using Matlab, and its value is compared with inrush current value of the shcheme of installing single resistor and the scheme of both installing resistor and capacitor. Simulation results show that this suppression scheme effectively suppresses the transformer group inrush current.