地铁引发电网变压器直流偏磁风险实验虚拟仿真设计

Design of Virtual Simulation Experiment of DC Bias Risk of Power Transformer Induced by Subway

地铁杂散电流的泄漏,特别是其引发的变压器直流偏磁问题事关城市电网能否正常稳定地供电。为提高相关专业本科生城市安全风险防范意识和能力,结合“交通概论”“城市轨道交通供电技术”等课程教学和试验要求,设计并开发地铁杂散电流引发电网变压器直流偏磁风险实验虚拟仿真系统。该实验系统包含地铁隧道、地铁变电所、220 kV变电站等场景,共设置10个交互性实验操作。该实验虚拟仿真系统将理论教学、实验教学以及工程应用紧密融合,结合工程教育认证的教育理念将有效提升本科生解决复杂工程问题的能力。

The leakage of subway stray current,especially the caused transformer DC bias problem,is related to the normal and stable power supply of urban power grid.In order to improve the risk prevention awareness and ability of undergraduates in related majors,combined with the teaching and test requirements of“Traffic Introduction”and“Urban Rail Transit Power Supply Technology”,a virtual simulation experiment system of DC magnetic bias risk of power grid transformer caused by stray current in subway was designed and developed.The experimental system includes three scenes,i.e.,subway tunnel,subway substation and 220kV substation,and sets 10 interactive experimental operations.The virtual simulation experiment system closely integrates theoretical teaching,experimental teaching and engineering application,and combines the educational concept of engineering education certification to effectively improve the ability of undergraduates to solve complex engineering problems.