铁道供电暂态过渡时序仿真与过电压防护控制  

Transient Processes Time Series Analysis of Railway Power Traction and Over-Voltage Protection

作　　者：屈志坚[1,2] 刘明光[1] 杨罡[1] 刘铁[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044 [2]华东交通大学电气工程学院,南昌330013

出　　处：《计算机测量与控制》2012年第10期2683-2686,共4页Computer Measurement &Control

基　　金：国家自然科学基金资助项目(51007023)

摘　　要：针对高速电力机车过关节式电分相时产生过电压,击穿绝缘、损坏电气设备等问题,利用时序仿真方法,研究了过电压产生的电磁暂态过渡过程,提出了一种防护控制措施;建立了电分相等效电容模型,考虑牵引网电分相处的电压初始相角对暂态过程的影响和冲击负荷的运动取流特点,建立了变电容的机车-牵引网动态电磁暂态模型;对武-嘉电气化区段牵引供电的动暂态过渡过程进行EMTDC仿真实验,得出中性线分段方法,使机车进入分相平行段的过电压从76kV降至67kV。Time series analysis method and protective measures were proposed in order to research transient process of over voltage, which caused insulation breakdown and electrical equipment damaged in high--speed railway articulated phase insulator. Equivalent capacitance model of articulated phase insulator is built and variable capacitance dynamic electromagnetic transient model of locomotive and traction power supply network is established, in which some characteristics for electricity voltage initial phase angle and impact on movement are considered. EMTDC simulation experiments are completed for electrified railway of Wuweinan--Jiayuguan, and results verify that neutral line segment method will inhibit transient over voltage from 76kV to 67kV.

关 键 词：关节式电分相 电磁暂态 电力机车 过电压 分布电容 铁道供电 

分 类 号：U229[交通运输工程—道路与铁道工程]