[工学]杂散电流的防护及测试方法研究.doc

毕业设计题目： 杂散电流的防护及测试方法研究 毕业设计专题题目： 毕业设计主要内容和要求： 1、了解杂散电流产生的原理和危害； 2、分析杂散电流的分布规律和影响因素； 3、研究杂散电流相关参数的测试方法； 4、提出杂散电流的防治方法。 摘 要 随着科学技术的不断进步和城市化交通系统的大力发展，人口的增多与城市化规模的不断扩大，现有的交通系统已经不能够满足现代化城市发展的需要。城市轨道交通作为一种较成熟的交通方式，凭借其运量大干扰小快捷方便、安全的特点走进了我们的生活，以缓解日益突出的城市交通问题。 ABSTRACT With the continuous advancement of technology and urbanization development of transport system, the increase in population and urbanization keeps expanding, the existing transportation system is not able to meet the modern needs of urban development. Urban rail transit as a more mature way of transport, with its large volume, interference characteristics of small, fast, convenient and safe has come into our lives, to alleviate the growing traffic problems. However, the harm caused by stray currents generated in the locomotive running on the surrounding environment, equipment and personnel safety have gradually been concerned about. In the current various operations line the stray currents present situation, its characteristic as the distribution complex, the influence factor many, the corrosion survey parameter difficulty, the corrosion degree determination basis is not clear about, creates the stray currents to prevent extremely difficultly. This article first describes the Definition stray currents, stray currents caused by stray currents, as well as the stray currents distributed rule and the harm, summarized domestic and foreign to the stray currents preventing and controlling method. This article both for the protection of research: first, on the Metro and light rail system itself to take measures, from root to reduce stray currents; second to is close to the subway light rail the underground structure to take the measure. In order to make the protection better able to achieve, during the protection at the same time some of the parameters of the stray currents and stray current testing. The need to detect the parameters are: structural steel polarization potential, the voltage of rail structure (rail