摘要
随着我国电力建设的发展,地下杂散电流对电气设施和地埋管道等设备的危害已愈发不可忽视,对杂散电流的深入研究已经迫在眉睫。本文依据轨道交通直流牵引系统的牵引特性建立杂散电流源动态模型,并基于电磁波在大地的传播原理提出了一种地下杂散电流源的定位算法。通过搭建地铁杂散电流动态扩散仿真模型验证定位方法的正确性,并结合上海某地铁站实际案例,现场实测选取确定的轨道交通地理位置和地电位测量信息,考虑测量误差与周围环境影响等因素,采用杂散电流定位算法计算得到的坐标值与实际干扰源位置较为吻合,证明了该定位法可应用于工程实践的杂散电流干扰源定位研究上。
With the development of the power facilities across China,the underground stray current becomes more and more nonnegligible as a source of hazard to electrical facilities,buried pipelines and other equipment,so it is extremely urgent to carry out an indepth study of stray current.In the current study,a dynamic model of stray current sources was established according to the traction characteristics of the DC traction system for rail transit,and an algorithm to position underground stray current sources was proposed based on the propagation law of electromagnetic wave on the ground.The positioning method was verified by building a simulation model of dynamic diffusion of stray current along metros,in combination with the case analysis at a metro station in Shanghai,in which some geographical locations were selected and ground potentials were measured on site.The calculated coordinates using the stray current positioning algorithm are almost coincident with the actual interference source positions,including the measurement errors and the influence of the surrounding environment,etc.,which demonstrates the feasibility of this method in the research on positioning of stray current interference sources in engineering practice.
作者
顾承昱
熊祥鸿
苏磊
童贤亮
李峰
洪子杰
GU Chengyu;XIONG Xianghong;SU Lei;TONG Xianliang;LI Feng;HONG Zijie(Electric Power Research Institute,State Grid Shanghai Municipal Electric Power Company,Shanghai 200080,China;School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)
出处
《机车电传动》
北大核心
2022年第6期116-121,共6页
Electric Drive for Locomotives
基金
国家电网有限公司科技项目资助(B3094021000B)。
关键词
杂散电流
轨道交通
定位
仿真模型
牵引供电
城市轨道交通
stray current
rail transit
positioning
simulation model
traction power supply
urban rail transit
