基于C8051单片机的电力电缆故障在线检测

文档编号:ZD747    文档字数:9377,页数:21

摘要
 电力电缆在运行过程中，必然要出现绝缘老化现象，甚至发生绝缘击穿，引起供电线路的突发停电事故。绝缘老化的本质是材料性能发生不可逆转的改变，影响老化的因素一般涉及热、电、机械与环境等方面。然后介绍常用的电缆故障的测试方法.采取在线监测电缆接头温度，沿电缆多测点分布之间无线连网，全系统联合多测点数据分析计算电缆绝缘状况，综合确定漏电或绝缘降低的情况和故障点位置具有很多优点。测试设备接入时，不用断开现场任何回路和接点，也不影响电缆网络输电运行；增加的测试点常常选择电缆接头处，而且只在监测时接通，不测时仍断开，不改变原系统的运行环境和运行性能；对于长电缆可沿电缆线路增加多个测点，使故障点查找更为准确。本文主要介绍下基于C8051单片机电缆在线检测装备，检测的项目主要包括电缆通，短，断及电缆接头温度等，最后，对文档进行总结，并对未来研究进行展望。希望为电力系统安全、方便、迅捷的检测电缆状态及环境，温度信息提供有利的理论与实践依据。
关键词：电力电缆  检测  故障  诊断

 Abstract
 Power cable running process, is bound to occur insulation aging, or even insulation breakdown, caused by sudden power lines power outages. Insulating nature of the aging of material properties are irreversible changes in the factors that affect the aging generally involve heat, electricity, machinery and environment. And introduce commonly used cable fault testing methods. Take the cable-line monitoring of temperature, many measurement points along the cable between the distribution of wireless networking, system-wide United many points of data analysis and calculation cable insulation situation, the Composite insulation to reduce leakage or to determine the circumstances and location of the point of failure has many advantages. Access to test equipment do not need to disconnect any circuit at the scene and contact, nor does it affect the operation of the transmission cable network; the increase in test point selection usually cable connector, and that only when connected to monitor, when something bad happens is still disconnected, do not change the original system operating environment and operational performance; for long cables along the cable lines can increase the number of measuring points, so that the point of failure and more accurate search. This paper mainly introduces C8051 single-chip based on cable online detection equipment, test items include cables pass, short, and the cable connector off temperature, etc. Finally, the paper summed up the future Prospect of the study. Hope for the power system safe, convenient and rapid detection of cable condition and environment, the temperature information to provide a favorable basis for the theory and practice.
Keywords: Power cable     Detected      Fault     Diagnosis

目录
引言： 1
1 前沿-电缆故障的现状与特点 2
2 电缆故障在线监测方法及比较 2
2.1 直流叠加法 2
2.2 直流成分法 3
2.3 局部放电法 3
2.4 低频重叠法 3
3 基于单片机的电力电缆故障在线监测的原理 3
3.1 断路测试 3
3.2 断路点测试 3
4 基于单片机的电力电缆故障在线监测系统的组成 3
        4.0 微处理器电路3
4.1 硬件系统 3
4.2 软件系统 4
5 数据分析 5
5.1 电缆在线绝缘信息分析 5
5.2 电缆运行绝缘故障信息分析 5
6结论 5
参考文献： 5

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