小电流接地系统单相接地故障定位技术的研究  

Fault location technology research on single phase ground fault of small current grounding system

作　　者：王璐[1] 谷海青[1] 姜宇辰 高强[1] 

机构地区：[1]天津理工大学自动化学院天津市复杂系统控制理论及应用重点实验室,天津300384

出　　处：《天津理工大学学报》2014年第5期17-21,共5页Journal of Tianjin University of Technology

基　　金：科学技术部科技型中小企业技术创新基金(12C26211200499)

摘　　要：针对中低压配电网频繁发生单相接地故障的问题,研究了一种能够迅速判断故障线路并确定故障位置的方法.本文在分析中低压配电网发生单相接地故障后出现的暂态稳态信息的基础上,提出基于小波理论的故障选线方法,进而利用C型行波法与小波分析相结合的方法进行定位.利用MATLAB仿真软件搭建模型,在模型上对提出的方法进行实验,验证了该方法的准确性.For the problem of single phase grounding fault occurs frequently in low-voltage distribution network,a method which can quickly determine fault line and the location was researched.Based on the analysis of the basis of transient and steady information occurred after the single-phase ground fault in low voltage distribution grid,this paper proposed fault line selection method based on wavelet theory,then used the method combining of C-type traveling wave method and wavelet to determine the location.MATLAB simulation software is used to build models,and verifying the accuracy of the method on the the experiment of the proposed method.

关 键 词：中低压配电网 单相接地故障 选线 C型行波法 小波理论 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]