知识与财富的链接
针对在铁路分相区实测的机车过分相时的过电压波形,研究了分相区接触网的等效电气参数和数学模型。通过理论分析指出,采用电子开关实现地面自动过分相,实现机车带载(不分闸)过分相的同时,也可避免过电压的产生。对机车处于中性区时地面开关分闸的截流过电压和地面开关合闸的合闸过电压进行了理论分析,仿真验证了分相区的开关切换产生的过电压及理论分析有效。
Based on the over-voltage waveforms measured in phase-separating section when the locomotives passing,the equivalent electrical parameters and mathematical model of contact net are researched.This paper proposes switch-ground’s auto-passing neutral section to use power electronic switch.It could eliminate the over-voltage in the neutral section,meanwhile locomotives could pass the neutral section with load(not open the main circuit break).It is analyzed theoretically that overvoltage occurres when switches cut-off and cut-in.The simulation results show that the theoretical analysis is effective.
