Research of DC Stray Current in Coal Mine Underground
-
摘要: 杂散电流所造成的电机车钢轨及其附近的埋地管线的腐蚀、人身触电和对通信系统的干扰等问题日益凸显出来。文章通过建立电机车简单的单边供电模型,在合理的假设前提下推导出了杂散电流的计算公式,并应用Matlab仿真软件对推导出的公式进行仿真分析。仿真分析结果表明:在单边供电的区间内,随着距电机车距离的增大,杂散电流先增大后减小,在供电区间的中点达到最大;过渡电阻和轨道纵向电阻率对杂散电流泄漏影响很大;供电距离和供电电流对杂散电流的影响次之。Abstract: The problems such as corrosion of steel rail and the buried metal pipe,and electric shock,interference to communication systems caused by stray current have become prominent increasingly.Through establishing unilateral power supply model of electric locomotive,the paper deducted the mathematical formula for stray current under reasonable suppositions,simulated the formula by using the simulation software Matlab.The simulation result showed that in unilateral power supply range,stray current increased at first and then decreased with increasing the distance to electric locomotive,and it come to maximum at the mid-point of power supply range,the transition resistance and track longitudinal resistivity have great affection to the stray current,the distance and the current of power supply have secondary affection to the stray current.
-
Keywords:
- coal mine /
- electric locomotive /
- unilateral power supply /
- stray current /
- simulation /
- Matlab
-
计量
- 文章访问数: 22
- HTML全文浏览量: 4
- PDF下载量: 10
下载:
