CAJ | 학술논문

针对变压器励磁涌流产生的危害，提出了一种变压器软起动的控制方法，通过调整晶闸管触发角的大小来改变变压器的输入端电压，从而降低空载合闸过程中变压器铁心的饱和程度达到减小励磁涌流的目的，使变压器平稳起动。利用 MATLAB 软件建立了变压器软起动控制系统的通用仿真模型，仿真结果验证了所提控制方法的正确性。在此基础上研制了变压器软起动装置并进行了样机实验，实验结果验证了理论分析的正确性。
침대변압기려자용유산생적위해，제출료일충변압기연기동적공제방법，통과조정정갑관촉발각적대소래개변변압기적수입단전압，종이강저공재합갑과정중변압기철심적포화정도체도감소려자용류적목적，사변압기평은기동。이용 MATLAB 연건건립료변압기연기동공제계통적통용방진모형，방진결과험증료소제공제방법적정학성。재차기출상연제료변압기연기동장치병진행료양궤실험，실험결과험증료이론분석적정학성。
According to the harm caused by magnetizing inrush current, a soft starting method for transformer was proposed. By regulating thyristor trigger angle to change the input voltage of transformer, the saturation of the iron core as well as the magnetizing inrush current was decreased, thus, transformer can start smoothly. A common simulation model of soft starting transformer was established by using MATLAB software. The simulation results show the correctness of the method. Furthermore, a prototype of soft starter for transformer is realized and some experiments are carried out. The experiment results validate the correctness of the theoretical analyses.