摘要
针对某高速铁路牵引供电系统中接触网线路某些区段的金属氧化物避雷器的雷电计数器显示频繁动作,但避雷器的物理和外观状态正常,电气试验符合规程要求。对管内高铁避雷器数据统计归纳得知是机车在这些接触网分相处过电时产生过电压,避雷器为抑制此异常状态,因而产生动作。其根源为牵引供电系统中的储能元件电感和电容发生了振荡,通过对这些电分相处的分析和仿真计算,找到系统振荡的原因,并给出消除振荡的建议方案。
The lightning counter of metal oxide arrester in some sections of Catenary line in traction power supply system of a high speed railway shows frequent action,but the physical and external state of the arrester is normal,and the electrical test meets the requirements of regulations.Through statistical induction of the data of the high-speed rail arrester in the tube,it is concluded that the abnormal arrester mainly distributes in some catenary systems.The reason is the operating overvoltage produced by the locomotive when the overcurrent is separated into phases.The arrester acts in order to suppress the abnormal state.The root cause of operating overvoltage is the oscillation of inductance and capacitance of energy storage elements in traction power supply system.Through the analysis and simulation of the coexistence of these components,the causes of system oscillation are obtained,and the suggestions for eliminating the oscillation are given.
作者
李瑞
LI Rui(Beijing-Shanghai High-speed Railway Maintenance Management Company,China Railway Electrification Bureau,Beijing 100000,China)
出处
《武汉职业技术学院学报》
2023年第4期112-115,共4页
Journal of Wuhan Polytechnic
关键词
高速铁路
避雷器
电分相
操作过电压
High Speed Railway
lightning arrester
electric phase separation
operating overvoltage
