城轨试验线感应电压抑制方法的研究电气工程专业论文.docxVIP

中国铁道科学研究院工程硕士学位论文摘要 中国铁道科学研究院工程硕士学位论文 摘要 国家铁道试验中心城市轨道交通试验线建成后，当大环线接触网带电时，在城轨试验 线接触网上会产生感应电压，造成城轨试验线接触网网压升高，对人身及设备安全构成威 胁。本文分析了感应过电压的产生机理，建立交流牵引网对直流牵引网感应电压仿真电路 模型，并选用合理方法对相关电气参数进行工程计算。针对试验中心交流牵引网与直流牵 引网的架设情况，利用MATLAB中的SIMULINK仿真工具对感应过电压进行仿真。结合现场 数据采集表明了仿真计算的正确性，并提出利用阻容吸收和交流滤波两种方案对感应电压 进行治理。分别搭建两种治理方案的仿真模型，通过理论计算和工程经验确定合理的过电 压抑制装置的结构和电气参数。结合仿真分析和理论验证，分别研制出以上两种感应电压 抑制装置，并进行了实际测试验证和对比。结果表明两种方法对感应电压的抑制效果良好， 降低了交流牵引网对直流牵引供电系统和城轨试验的影响，保证直流牵引供电设备、地铁 车辆的安全；保障交流机车和城轨；车辆试验互不干扰。 关键词：感应电压；抑制；阻容吸收；滤波 万方数据 中国铁道科学研究院工程硕士学位论文Abstract 中国铁道科学研究院工程硕士学位论文 Abstract The Testing line for Urbar Rail Transit in National Railway Track Test Center was completed． When large ring test line contact net was charged electricity,the induced voltage Can be generated on the contact net of Testing line for Urbar Rail Transit．It would cause the increase of the voltage of the contact net of Testing line for Urbar Rail Transit，endanger personal and equipment safety．This paper analyzes the composition of the DC and AC traction power supply system，establishes simulation circuit model of induced voltage of DC traction network．A reasonable method is selected to calculate the relevant electrical parameters in this paper．In the light of actual on-site condition of DC and AC traction electric network，this paper researches the generation of induced overvoltage and uses the simulmion tool of MATLAB to simulate the induced overvoltage．The two suppression methods of RC absorption and AC filter are put forward through the simulmion research and the field data collection．It builds simulation models of two suppression methods and establishes the reasonalale structures and the electrical parameters through theoretical validation and engineering experience．Based on the simulmion analysis and theoretical verification，two induced voltage suppression devices for DC traction electric network for the Testing line for Urbar Rail Transit are developed respectively．It shows that the two methods are effective in suppressing the