配电网工程电缆长度测量仪的研制与应用  

Development and Application of Cable Length Measuring Instrument for Power Distribution Grid Project

作　　者：郭刚[1] 贾卫国[1] 张社安[1] 李静[1] 张静波[1] 

机构地区：[1]国网河北省电力公司邯郸供电分公司,河北邯郸056035

出　　处：《河北电力技术》2017年第2期19-21,共3页Hebei Electric Power

摘　　要：针对配网工程中电缆敷设长度存在测量误差的问题,基于阻抗测量法研制了一种电缆长度测量仪。介绍了测量仪的基本原理和整体结构,从恒流源、信号放大、信号滤波等方面分析了测量仪的关键技术,并结合工程实例,将仪器测量法与基于路径长度测量的传统测量方法进行了对比分析,结果表明该测量仪及提出的测量方法测量结果准确、误差小。In order to solve the problem of measuring the laying length of cable for power distribution grid project,a cable length measuring instrument is developed based on the impedance measurement. The basic principle and the whole structure of the measuring instrument are introduced, and the key technologies are analyzed from the aspects of constant-current source, signal amplification and signal filtering. According to a project example, the traditional measurement based on the path length meas- urement is compared with the measurement by using the instrument. The results show that the developed instrument and the proposed method are accurate and the errors are small.

关 键 词：配网工程 电力电缆 长度测量 测量仪 恒流源 差分放大电路 

分 类 号：TM73[电气工程—电力系统及自动化]