全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

中性点经消弧线圈接地系统小电流接地故障暂态等值电路及暂态分析

DOI: 10.13334/j.0258-8013.pcsee.2015.22.004, PP. 5703-5714

Keywords: 中性点经消弧线圈接地系统,小电流接地故障,暂态等值电路,模型简化,暂态分析

Full-Text   Cite this paper   Add to My Lib

Abstract:

对于经消弧线圈接地系统的小电流接地故障,传统暂态等值电路存在忽略线模信息、消弧线圈位置不准确、缺乏具体参数计算方法等缺陷,无法用于故障暂态的定量分析和计算。建立包含故障点上下游网络的小电流接地故障分布参数模型,利用模型简化原则建立由等效电阻、等效电感、系统对地分布电容及消弧线圈等效电感构成的Γ型精确暂态等值电路。基于简化原则推导出表达形式简单、满足工程应用需求的简化参数计算方法。与传统暂态等值电路相比,所建等值电路包含线模和零模信息,等效电感近似等于故障点到母线间线路的零模电感与2倍线模电感之和,且消弧线圈接于母线处更符合实际情况。针对低阻接地、高阻接地,分别给出暂态电流的解析表达式,分析暂态主谐振频率、幅值、衰减因子等要素随故障条件的变化规律,分析结果有助于更全面把握故障暂态特征。最后利用仿真及现场故障数据验证了所建暂态等值电路模拟精度更高、适用性更强、暂态分析结果正确。

References

[1]  要焕年,曹梅月.电力系统谐振接地[M].北京:中国电力出版社,2009:64-69. Yao Huannian,Cao Meiyue.Power system resonance grounding[M].Beijing:China Electric Power Press,2009:64-69(in Chinese).
[2]  林贯元.小电流谐振接地系统选线装置研究[D].天津:天津大学,2007. Lin Guanyuan.Study on fault line detection system in the resonant grounded power system[D].Tianjin:Tianjin University,2007(in Chinese).
[3]  李润先.中压电网系统接地实用技术[M].北京:中国电力出版社,2001:15-19. Li Runxian.Application technology of neutral point in medium voltage system[M].Beijing:China Electric Power Press,2001:15-19(in Chinese).
[4]  要焕年,曹梅月.论城乡中压电网的中性点接地方式[J].电力设备,2001,2(3):5-21. Yao Huanian,Cao Meiyue.Discussion on neutral grounding scheme for urban and rural medium voltage networks[J].Electrical Equipment,2001,2(3):5-21(in Chinese).
[5]  张利生,刘彤军,杨旭东.中压配电网中性点接地方式的选择[J].内蒙古电力技术,2004,22(2):11-13. Zhang Lisheng,Liu Tongjun,Yang Xudong.Option on neutral-point grounding of medium-voltage distribution grid[J].Inner Mongolia Electric Power,2004,22(2):11-13(in Chinese).
[6]  薛永端,徐丙垠,冯祖仁,等.小电流接地故障暂态方向保护原理研究[J].中国电机工程学报,2003,23(7):51-56. Xue Yongduan,Xu Bingyin, Feng Zuren,et al.The principle of directional earth fault protection using zero sequence transients in non-solid earthed network [J].Proceedings of the CSEE,2003,23(7):51-56(in Chinese).
[7]  董新洲,毕见广.配电线路暂态行波的分析和接地选线研究[J].中国电机工程学报,2005,23(7):2-5. Dong Xinzhou,Bi Jianguang.Analysis on transient traveling wave and study on fault line selection for distribution lines[J].Proceedings of the CSEE,2003,23(7):2-5(in Chinese).
[8]  Oinis Chaari,Michel Meunier.A recursive wavelet transform analysis of earth fault currents in Petersen- coil-protected power distribution networks[C]// Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis.1994,10:162-165.
[9]  赵慧梅,张保会,段建东,等.一种自适应捕捉特征频带的配电网单相接地故障选线新方案[J].中国电机工程学报,2006,26(2):41-46. Zhao Huimei,Zhang Baohui,Duan Jiandong,et al.A new scheme of faulty line selection with adaptively capturing the feature band for power distribution networks [J].Proceedings of the CSEE,2006,26(2):41-46(in Chinese).
[10]  贾清泉,刘连光,杨以涵,等.应用小波检测故障突变特性实现配电网小电流故障选线保护[J].中国电机工程学报,2001,21(10):78-82. Jia Qingquan,Liu Lianguang,Yang Yihan,et al.Abrupt change detection with wavelet for small current fault relaying[J].Proceedings of the CSEE,2001,21(10):78-82(in Chinese).
[11]  戴剑锋,张艳霞.基于多频带分析的自适应配电网故障选线研究[J].中国电机工程学报,2003,23(5):44-47. Dai Jianfeng,Zhang Yanxia.Study on adaptively choosing fault line under single-phase to ground fault based on analysis of mult-frequency bands[J].Proceedings of the CSEE,2003,23(5):44-47(in Chinese).
[12]  齐郑,高玉华,杨以涵.配电网单相接地故障区段定位矩阵算法的研究[J],电力系统自动化.2010,38(20):159-163. Qi Zheng,Gao Yuhua,Yang Yihan.Research on matrix-based algorithm for single-phase-to-earth fault section location in distribution grid[J].Automation of Electric Power Systems,2010,38(20):159-163(in Chinese).
[13]  郑顾平,姜超,李刚,等.配网自动化系统中小电流接地故障区段定位方法[J].中国电机工程学报,2012,32(13):103-109. Zheng Guping,Jiang Chao,Li Gang,et al.Method of fault area & section location for non-solidly earthed distribution system[J].Proceedings of the CSEE,2012,32(13):103-109(in Chinese).
[14]  张林利, 徐丙垠, 薛永端,等.基于线电压和零模电流的小电流接地故障暂态定位方法[J].中国电机工程学报,2012,32(13):110-115. Zhang Linli,Xu Bingyin,Xue Yongduan,et al.Transient fault Locating method based on line voltage and zero- mode current in non-solidly earthed network [J].Proceedings of the CSEE,2012,32(13):110-115(in Chinese).
[15]  马士聪,徐丙垠,高厚磊,等.检测暂态零模电流相关性的小电流接地故障定位方法[J].电力系统自动化,2008,32(7):48-52. Ma Shicong,Xu Bingyin,Gao Houlei,et al.An earth fault locating method in feeder automation system by examining correlation of transient zero mode currents [J].Automation of Electric Power Systems,2008,32(7):48-52(in Chinese).
[16]  薛永端, 徐丙垠, 李天友,等.配网自动化系统小电流接地故障暂态定位技术[J].电力自动化设备,2013,33(12):27-32. Xue Yongduan,Xu Binyin,Li Tianyou,et al.Small- current grounding fault location based on transient signals of distribution automation system[J].Electric Power Automation Equipment,2013,33(12):27-32(in Chinese).
[17]  贺家李,宋从矩.电力系统继电保护原理[M].北京:中国电力出版社,2004:58-66. He Jiali,Song Congju.Power system protection relaying principle[M].Beijing:China Electric Power Press,2004:58-66(in Chinese).
[18]  Lehtonen M,Hakola T.Neutral earthing and power system protection[M].Vaasa,Finland:ABB Transmit on Publication,1996:25-35.
[19]  薛永端,李娟,徐丙垠.中性点不接地系统小电流接地故障暂态等值电路的建立[J].中国电机工程学报,2013,33(34):223-232. Xue Yongduan,Li Juan,Xu Bingyin.Construction of transient equivalent circuits of single-phase earth fault for isolated neutral systems[J].Proceedings of the CSEE,2013,33(34):223-232 (in Chinese).
[20]  施围.电力系统过电压计算[M].西安:西安交通大学出版社,2006:34-36. Shi Wei.Power system over-voltage calculation [M].Xi’an:Xi’an Jiaotong University Press,2006:34-36(in Chinese).
[21]  薛永端.基于暂态特征信息的配电网单相接地故障检测研究[D].西安:西安交通大学,2003. Xue Yongduan.Earth fault detection based on characteristic transient information in non-solidly earthed network[D].Xi’an:Xi’an Jiao Tong University,2003(in Chinese).
[22]  李娟,薛永端,徐丙垠,等.单相均匀传输线暂态模型参数计算[J].电网技术,2013,37(4):1083-1089. Li Juan,Xue Yongduan,Xu Bingyin,et al.A method to calculate parameters of transient model for single-phase uniform transmission line[J].Power System Technology,2013,37(4):1083-1089(in Chinese).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133