基于Upwind差分格式的电缆故障测距仿真系统  

Simulation System for Cable Fault Location Based on Upwind Difference Scheme

作　　者：黄俊彦[1] 刘永强[2] 马士超[1] 谢萍[1] 

机构地区：[1]华南理工大学电力学院,广州510640 [2]广东省绿色能源技术重点实验室,广州510640

出　　处：《光纤与电缆及其应用技术》2010年第3期22-26,共5页Optical Fiber & Electric Cable and Their Applications

基　　金：广东省绿色能源技术重点实验室资助项目(2008A060301002)

摘　　要：波反射法是目前电力电缆故障测距的主要方法,而波反射法采集到的故障波形复杂多变,分析较为困难。因此利用电缆的传输线模型,在分析偏微分方程数值解理论的基础上,提出了基于Upwind差分格式来进行传输线时域分析,并由此建立电缆故障测距仿真系统。检修人员通过仿真软件,学习分析电缆故障测距中可能出现的各种波形,可以提高工程实际中故障点的判断能力。仿真结果表明,仿真波形与工程实际中测试到的故障波形基本一致,能够很好地用于对电缆故障检修人员进行培训。The main method for the location of power cable fault is arc reflection method,in which the fault waveform is complex and variable,therefore it is difficult to analyze.In this case a simulation system for cable fault location is constructed by using the transmission line model of cable,and based on the theory of analyzing partial differential equations numerical solution and the time-domain analysis of transmission lines based on upwind difference scheme.The cable maintenance personnel may use the simulation software to study and analyze the possible waveforms during cable fault location and enhance the ability to judge fault points in engineering practice.The simulation results show that the simulation waveforms are basically in accordance with those measured in the engineering practice,so may be well used to train the cable fault locating personnel.

关 键 词：波反射法 故障测距 UPWIND 传输线时域分析 

分 类 号：TM755[电气工程—电力系统及自动化]