【摘要】 介绍了一个计及合闸角和剩磁效应的三相变压器模型 ,通过该模型推导出励磁涌流与合闸角和铁心剩磁通间的相互关系。在此基础上提出了基于DSP的分相合闸控制策略并给出相应的软、硬件设计思想。仿真结果表明 :该方法可大幅减小励磁涌流的冲击 ,使变压器各电磁参数迅速进入稳态更多还原

【Abstract】 THIS PAPER DESCRIBES AN ELECTROMAGNETIC MODEL OF THREE PHASE TRANSFORMER INCLUDING RESIDUAL FLUX AND SWITCH ON INSTANTS. A RELATIONSHIP OF SWITCH ON INSTANTS CORRESPONDING TO DIFFERENT RESIDUAL FLUX IS DERIVED FROM THE SPECIFIED TRANSFORMER MODEL. BASED ON DSP MICROCONTROLLER A CLOSING ALGORITHM AND CONTROLLED SWITCH WAS PROPOSED. THE SIMULATION RESULTS AND SOFTWARE DESIGN ARE GIVEN IN THIS PAPER.更多还原