[1]魏臻珠,蒋建东,陈帆,等.小电流接地系统故障选线的暂态零序电流变化率方法[J].郑州大学学报(工学版),2012,33(01):106-108128.[doi:10.3969/j.issn.1671-6833.2012.01.026]
　WEI Zhenzhu,JIANG Jiandong,CHEN Fan,et al.Transient Zero-sequence Current Changing Rate Method for the Fault LineDetection of Small Current Neutral Grounding System[J].Journal of Zhengzhou University (Engineering Science),2012,33(01):106-108128.[doi:10.3969/j.issn.1671-6833.2012.01.026]
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小电流接地系统故障选线的暂态零序电流变化率方法()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33
期数:
2012年01期
页码:
106-108128
栏目:
出版日期:
2012-01-10

文章信息/Info

Title:
Transient Zero-sequence Current Changing Rate Method for the Fault LineDetection of Small Current Neutral Grounding System
作者:
魏臻珠; 蒋建东; 陈帆; 等.
郑州大学电气工程学院,河南郑州,450001, 卫辉市电业局,河南卫辉,453100
Author(s):
WEI Zhenzhu; JIANG Jiandong; CHEN Fan; etc;
1.School of Elcctrical Engineering, 2hengzhou University, 2hengzhou 450001, China; 2. Weihui Power Supply Company,Weihui 453100.China
关键词:
小电流接地系统;  故障选线;  暂态零序电流;  变化率
Keywords:
small current neutral grounding system ;  fault line selection;  ransient zero-sequence current; changing rate
分类号:
TM862
DOI:
10.3969/j.issn.1671-6833.2012.01.026
摘要:
分析了小电流接地系统发生单相接地故障时暂态零序电流的特点,给出了利用故障线路与非故障线路暂态零序电流变化率差异的选线判据,提出了小电流接地系统故障选线的暂态零序电流变化率方法.该方法不受系统中性点接地方式、电压初相角、过渡电阻的影响,故障判别准确,选线灵敏度高,算法简单,实用性强.最后用Matlab中建立的小电流接地系统仿真模型验证了该方法的有效性.
Abstract:
The transient zero-sequence characteristics in the case of single phase-to-ground fault in small cur.rent neutral grounding system are analyzed in this paper. And the fault line selection criterion based on thedifference of transient current changing rate between the fault line and the non-fault line is given, Then thetransient zero-sequence current changing rate method for the fault line detection of small current neutragrounding system is presented. The method, which can be immune to the variation of neutral grounding, voltage initial angle and transition resistance, has the characteristics of high sensitivity, reliability and practicali.ty. Finally , the simulation model of smal!l current neutral grounding system is built with Matlab and the simu-lation results showed the effectiveness of the method.

相似文献/References:

[1]蒋建东,陈帆,任建..小电流接地系统暂态零序电压电流特征仿真研究[J].郑州大学学报(工学版),2011,32(04):68.[doi:10.3969/j.issn.1671-6833.2011.04.017]
[2]李景丽,任俊跃,袁 豪,等.基于小波分析的配电网电弧接地故障选线方法[J].郑州大学学报(工学版),2023,44(05):69.[doi:10.13705/j.issn.1671-6833.2023.05.011]
　LI Jingli,REN Junyue,YUAN Hao,et al.Research on Arc Grounding Fault Selection Method of Distribution Network Based on Wavelet Analysis[J].Journal of Zhengzhou University (Engineering Science),2023,44(01):69.[doi:10.13705/j.issn.1671-6833.2023.05.011]

更新日期/Last Update: 1900-01-01