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哈尔滨理工大学学士学位论文 电缆故障的产生及测试方法分析
摘要
电缆供电以其安全、可靠、有利于美化城市与厂矿布局等优点，获得了越来越广泛的应用。尤其是近几年来新开发区的建设、旧城的改造中，掀起了架空线入地的高潮。城市中电缆的用量迅速增加。
电力电缆多埋于地下，一旦发生故障，寻找起来十分困难，往往要花费数小时，甚至几天的时间，不仅浪费了大量的人力、物力，而且会造成难以估量的停电损失。如何准确、迅速、经济地查寻电缆故障便成了供电部门日益关注的问题。
电缆故障情况及埋设环境比较复杂，变化多，测试人员应熟悉电缆的埋设走向与环境，确切地判断出电缆故障性质，选择合适的仪器与测量方法，按照一定的程序工作，才能顺利地测出电缆故障点。
电缆故障探测有其固有的特点，现场测试人员曾形象地说探测电
缆故障点“七分靠仪器,三分靠人”，说明单纯地靠购买先进仪器是不能解决问题的。要重视操作人员的培训工作，生产单位和使用部门要经常交流信息、积累经验，加强电缆故障探测技术的研讨，以促进我国电缆故障探测技术整体水平的提高。
本文介绍了电缆故障的产生原因，电缆故障的诊断，性质以及分
类。通过对电缆故障的研究导出电缆故障测试方法的研究，主要介绍了电缆故障测试方法，电缆故障定点方法，电缆故障在线监测以及现阶段低压电缆故障检测装置存在的问题。最后介绍了电力电缆故障测试的新方法，
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哈尔滨理工大学学士学位论文 主要有测试低压电力电缆的新方法-直流比值法，电力电缆绝缘击穿定位的新方法等。
关键词 电力电缆 故障测试 故障定点 在线监测
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哈尔滨理工大学学士学位论文 Cable Fault analysis and test generation
Abstract
Power cable power supply for its safe, reliable, and is conducive
to beautify the city and the layout of factories, mines, etc., gained more and more widely。In particular, the construction of the new development zone in recent years, the transformation of the old city, set off overhead line to the climax. The amount of cables in the city is increasing rapidly.
Buried power cables and more, in the event of failure, it is very
difficult to find, often spend hours, even days, not only wasting a lot of manpower, material resources, but also incalculable power loss. How accurate, rapid and economical search for cable fault has become a growing concern for the electricity sector.
The laying of the cable fault conditions and the environment is
complex, changing, testing personnel should be familiar with the laying of the cable into the environment, determine exactly the nature of cable fault, select the appropriate instruments and measurement methods, in accordance with certain procedures before we can successfully measure Cable fault.
Cable fault detection has its inherent characteristics, field
testers have said the image of the cable fault detection, \by the instrument, one-third by the people \that simply by buying advanced equipment can not solve the problem. Should pay attention to the training of operating personnel, production units and departments should use the regular exchange of information, gain experience, strengthen the cable fault detection technique in order to promote our cable fault detection technology to improve the overall level.
This article describes the causes of failure of the cable, cable
fault diagnosis, nature and classification. Research by exporting cable fault test method of cable fault, the main cable fault testing methods are introduced, cable fault point method, cable fault-line monitoring, and current low-voltage cable fault detection device problems. Finally, the power cable fault testing of new methods, mainly testing new method of low-voltage power cable - DC ratio method, the power cable insulation breakdown of the new positioning methods
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哈尔滨理工大学学士学位论文 Keywords Power cable Fault test Failure point Online Monitoring
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