石勇,张艳霞,沈勇环

• 1:天津大学电气与自动化工程学院
• 2:天津大学电气与自动化工程学院
• 3:天津大学电气与自动化工程学院 天津市南开区300072
• 4:天津市南开区300072

摘要(Abstract)：

根据配电网单相接地故障中零序电流的特点,利用小波包对零序电流进行分解,在按能量最大原则选取的特征频带中通过比较重构后电流瞬时值的符号进行接地故障选线,仿真结果表明该方法既能实现相电压峰值附近的故障选线,也能实现相电压过零点附近的故障选线;并针对该方法构建了基于数字信号处理器(DSP)的配电网接地选线硬件平台,试验结果表明,该软硬件平台运算速度快、抗干扰能力强、运行稳定。

关键词(KeyWords)： 数字信号处理器(DSP);小波包重构;配电网;单相接地故障选线;继电保护;电力系统

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 石勇,张艳霞,沈勇环

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参考文献(References)：

• [1]王晶,束洪春,陈学允.小波变换电力系统工学应用综述[J].电 网技术,2003,27(6):52-63.WangJing,ShuHongchun,ChenXueyun.A survey of wavelet transform applying to power system engineering[J].PowerSystemTechnology,2003,27(6):52-63.
• [2]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.DaiJianfeng,ZhangYanxia.Study on adaptively choosing fault line under single-phase to ground fault based on analysis of multi-frequency bands[J].Proceedings of theCSEE,2003,23(5):44-47.
• [3]戴剑锋,张艳霞,侯喆．小波重构算法在配电网接地选线中的应用[J].电网技术,2004,28(3):43-47.DaiJianfeng,ZhangYanxia,HouZhe.Application of wavelet reconstruction algorithm in phase-to-ground fault detection of distribution networks[J].PowerSystemTechnology,2004,28(3):43-47.
• [4]苏战涛,吕艳萍.一种基于小波包分析的小电流接地电网单相接地故障选线新方法[J].电网技术,2004,28(12):30-33.SuZhantao,LüYanpin.A new wavelet packet analysis based method to detect faulty line for single phase to ground fault occurred in distribution network with small current neutral grounding[J].PowerSystemTechnology,2004,28(12):30-33.
• [5]崔锦泰.小彼分析导论[M].西安:西安交通大学出版社,1995.
• [6]要焕年,曹梅月.电力系统谐振接地[M].北京:中国电力出版杜,2000.
• [7]张艳霞,陈超英,赵杰辉,等.配电网单相接地故障选线的一种新方法[J].电网技术,2002,26(10):21-24.ZhangYanxia,ChenChaoying,ZhaoJiehui et al.A new method of location fault line under single phase to ground fault in distribution network[J].PowerSystemTechnology,2002,26(10):21-24.
• [8]毛鹏,孙雅明,张兆宁,等.小波包在配电网单相接地故障选线中的应用[J].电网技术,2000,24(6):9-13.MaoPeng,SunYaming.ZhangZhaoning et al.Wavelets packet based on detection of phase-to-ground fault in distribution automation system[J].PowerSystemTechnology,2000,24(6):9-13.
• [9]CharriO,MeunierM,BrouayeF.Wavelets:a new tool for the resonant grounded power distribution system relaying[J].IEEE Trans onPowerDelivery,1996,11(3):1301-1308.
• [10]贾清泉,刘连光,杨以涵,等.应用小波检侧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.JiaQingquan,LiuLianguang,YangYihan et al.Abrupt change detection with wavelet for small current fault relay[J].Proceedings of theCSEE,2001,21(10):78-82.
• [11]TexasInstruments.Wavelet transforms in theTMS320C55x[Z].Texas:TexasInstruments,2003.
• [12]毛鹏,段玉倩,姜娜.基于相关分析的故障选线方法[J].电网技术,2004,28(2):36-39.MaoPeng,DuanYuqian,JiangNa.A correlation analysis based method to detect faulty line under single phase to ground fault occurred in distribution network with small current neutral grounding[J].PowerSystemTechnology,2004,28(2):36-39.