高速列车车网电气安全防护理论与方法研究

项目名称： 高速列车车网电气安全防护理论与方法研究

项目编号： No.U1434203

项目类型： 联合基金项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 刘志刚

作者单位： 西南交通大学

项目金额： 270万元

中文摘要： 针对目前高速列车车网过电压引起牵引传动系统设备故障、元器件烧毁，甚至导致行车中断的电气安全防护问题，提出开展“高速列车车网电气安全防护理论与方法”研究。结合动车组与牵引网实际线路检测监测数据，分析动车组和牵引网的特性，建动车组与牵引网电气耦合模型和动车组接地系统模型；对车网低频振荡过电压产生机理及影响因素进行研究，提出抑制低频振荡过电压的电气匹配方法；分析车网过电压对牵引传动系统电气安全防护的影响机理，提出车网过电压下牵引传动系统核心部件故障快速诊断及相关回路容错控制策略；研究动车组工作接地和保护接地之间的相互影响关系，提出动车组接地系统的优化设计方法。项目旨在揭示车网低频振荡过电压产生机理，提出一套抑制车网低频振荡过电压的防护方法和设计方案。

中文关键词： 电气防护；暂态过电压；谐振过电压；动车组-牵引网；高速铁路

英文摘要： Aiming at the electrical safety problems of overvoltage between electric multiple units (EMU) and traction power network (TPN) of high-speed railway, which can cause the device, component damage and even EMU operation interruption, the research “electric security protection theories and methods between multiple units and traction power network of high-speed rail” is proposed. Using the real-life data of EMU and TPN, based on the characteristics of CRH EMU and full parallel TPN, the electrical coupled model of EMU and TPN and their grounding system model are established. For the low-frequency oscillation overvoltage between EMU and TPN, its production mechanism and influencing factors are analyzed, and electrical matching method is proposed. Based on the analysis of overvoltage influence mechanism for the traction drive system, the rapid diagnosis and fault tolerant control strategies for key components of EMU are proposed. Based on the relationship research between EMU working grounding and protective grounding, the optimization design of EMU grounding system is given. The project aims to reveal the mechanism of over-voltage low-frequency oscillation between EMU and TPN. A set of suppression and protection methods for the low frequency oscillation overvoltage are proposed and designed.

英文关键词： NULL