基于时域下相关分析法的小电流接地故障选线

TM77; 由于配网结构日趋混杂、故障线的故障特征不明显和接地状态不稳等原因,准确的小电流接地故障选线技术一直是继电保护领域研究的热点和难点.针对中性点不接地和中性点经消弧线圈接地系统,分别分析了其零序等效模型,得出两种接地方式下健全线、故障线的零序电流和母线零序电压之间的关系,然后运用相关分析方法,通过计算各出线零序电流和母线零序电压导数之间的相关系数实现故障选线.理论分析和仿真结果表明,该选线方案准确可靠,不受故障初相角、过渡电阻和故障位置的影响;该方案计算量小且具备自举性,可以和馈线保护装置合为一体....

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Published in电力系统保护与控制 Vol. 36; no. 13; pp. 15 - 20
Main Authors 李森, 宋国兵, 康小宁, 薛晓辉, 王桂林, 索南加乐
Format Journal Article
LanguageChinese
Published 西安交通大学电气工程学院,陕西西安,710049 2008
北京市电力公司,北京,100031%西安交通大学电气工程学院,陕西西安,710049
Subjects
小电流接地系统
继电保护
相关分析
故障选线
单相接地故障
Online AccessGet full text
ISSN1674-3415
DOI10.3969/j.issn.1674-3415.2008.13.004

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Abstract TM77; 由于配网结构日趋混杂、故障线的故障特征不明显和接地状态不稳等原因,准确的小电流接地故障选线技术一直是继电保护领域研究的热点和难点.针对中性点不接地和中性点经消弧线圈接地系统,分别分析了其零序等效模型,得出两种接地方式下健全线、故障线的零序电流和母线零序电压之间的关系,然后运用相关分析方法,通过计算各出线零序电流和母线零序电压导数之间的相关系数实现故障选线.理论分析和仿真结果表明,该选线方案准确可靠,不受故障初相角、过渡电阻和故障位置的影响;该方案计算量小且具备自举性,可以和馈线保护装置合为一体.
AbstractList TM77; 由于配网结构日趋混杂、故障线的故障特征不明显和接地状态不稳等原因,准确的小电流接地故障选线技术一直是继电保护领域研究的热点和难点.针对中性点不接地和中性点经消弧线圈接地系统,分别分析了其零序等效模型,得出两种接地方式下健全线、故障线的零序电流和母线零序电压之间的关系,然后运用相关分析方法,通过计算各出线零序电流和母线零序电压导数之间的相关系数实现故障选线.理论分析和仿真结果表明,该选线方案准确可靠,不受故障初相角、过渡电阻和故障位置的影响;该方案计算量小且具备自举性,可以和馈线保护装置合为一体.
Author 索南加乐
宋国兵
薛晓辉
李森
康小宁
王桂林
AuthorAffiliation 西安交通大学电气工程学院,陕西西安,710049;北京市电力公司,北京,100031%西安交通大学电气工程学院,陕西西安,710049
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Author_FL SONG Guo-bing
KANG Xiao-ning
XUE Xiao-hui
WANG Gui-lin
LI Sen
SUONAN Jia-le
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Keywords 小电流接地系统
继电保护
相关分析
故障选线
单相接地故障
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Publisher 西安交通大学电气工程学院,陕西西安,710049
北京市电力公司,北京,100031%西安交通大学电气工程学院,陕西西安,710049
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Snippet TM77; 由于配网结构日趋混杂、故障线的故障特征不明显和接地状态不稳等原因,准确的小电流接地故障选线技术一直是继电保护领域研究的热点和难点.针对中性点不接地和中性点经...
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Title 基于时域下相关分析法的小电流接地故障选线
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