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Article(id=1322531913038942783, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1322531709363536798, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2026.6.255, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1717084800000, receivedDateStr=2024-05-31, revisedDate=1722355200000, revisedDateStr=2024-07-31, acceptedDate=1723478400000, acceptedDateStr=2024-08-13, onlineDate=1793245779522, onlineDateStr=2026-10-29, pubDate=1782748800000, pubDateStr=2026-06-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793245779522, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793245779522, creator=13701087609, updateTime=1793245779522, updator=13701087609, issue=Issue{id=1322531709363536798, tenantId=1146029695717560320, journalId=1146031654075715584, year='2026', volume='24', issue='6', pageStart='1', pageEnd='368', issueExtLink='null', onlineDate='null', pubDate='1782748800000', pubDateStr='2026-06-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793245730962, creator='13701087609', updateTime=1793245730962, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=255, endPage=264, ext={EN=ArticleExt(id=1322531914708275776, articleId=1322531913038942783, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Fault Protection Method for Flexible DC Power Grid Based on Canberra Distance, columnId=1321491706692878600, journalTitle=Journal of Power Supply, columnName=Power Electronic Dominated Power Systems, runingTitle=null, highlight=null, articleAbstract=

The flexible DC distribution network has characteristics such as a fast rising speed and a large amplitude of fault current. Therefore, the fast and reliable identification of DC line faults is a key technology that the DC distribution networks urgently need to break through. Aimed at the problems of poor selectivity of single-end protection and a slow speed of multi-end protection in the existing flexible DC power grids, a fault protection method for flexible DC power grid based on the Canberra distance is proposed. First, according to the difference in polarity of current differential between the two terminals under internal and external faults in the flexible DC power grid, the Canberra distance is introduced to calculate the polarity similarity of fault current differential sampled at both ends of the line, so as to perform diagnosis of the fault area. Second, based on the fault characteristics of fault and non-fault lines at the time of fault occurrence, a ratio is formulated using the numerical difference in current differential between the two poles, thus selecting the fault pole. Finally, different fault scenarios are set to verify the applicability of the proposed method under different working conditions. Simulation results show that the proposed protection scheme can achieve correct fault location and pole selection under the conditions of different fault locations, different values of current-limiting reactance and different transition resistances.

, authors=Zhanye YANG1, 2, Yanfang WEI3, Jingwen ZHAO4, Peng WANG5, Zhihui ZENG3, authorsList=Zhanye YANG, Yanfang WEI, Jingwen ZHAO, Peng WANG, Zhihui ZENG, authorCompany=null, correspAuthors=Yanfang WEI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322531915224175171, articleId=1322531913038942783, tenantId=1146029695717560320, journalId=1146031654075715584, language=CN, title=基于Canberra距离的柔性直流电网故障保护方法, columnId=1321491706852262154, journalTitle=电源学报, columnName=电力电子化电力系统, runingTitle=null, highlight=null, articleAbstract=

柔性直流配电网具有故障电流上升速度快且幅值高等特点，因此，直流线路故障的快速可靠识别是直流配电网亟需突破的关键技术。针对现有柔性直流电网单端保护选择性差、多端保护速动性差的问题，提出一种基于Canberra距离的柔性直流电网故障保护方法。首先，根据柔性直流电网发生区内、外故障时双端电流微分正负极性的差异性，引入Canberra距离计算线路两端采样的故障电流微分的极性相似度，以此来进行故障区域的诊断；其次，根据故障发生时故障线与非故障线的故障特征，利用两极线路电流微分的数值差异性构造比值来进行故障选极；最后，设置不同的故障情况，验证该方法对于不同工况的适用性。仿真结果表明：该保护方案在不同故障位置、不同限流电抗及不同过渡电阻下均能实现正确故障定位和选极。

, authors=杨湛晔1, 2, 韦延方3, 赵靖雯4, 王鹏5, 曾志辉3, authorsList=杨湛晔, 韦延方, 赵靖雯, 王鹏, 曾志辉, authorCompany=null, correspAuthors=韦延方, authorNote=

杨湛晔（1981—　），男，硕士，高级工程师。研究方向：电力物联网及新型电力系统，能源互联网研究。E-mail：。

赵靖雯（1998—　），女，硕士。研究方向：电气工程与自动化。E-mail：。

王鹏（1983—　），男，博士，高级工程师。研究方向：智能配电网技术。E-mail：。

曾志辉（1978—　），男，博士，副教授。研究方向：电力电子和储能技术。E-mail：。

, correspAuthorsNote=
韦延方（1982—　），男，通信作者，博士，教授。研究方向：直流电网故障研究。E-mail：。
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2.Hainan Institute of Green Energy and Environmental Engineering Technology, Haikou 570125, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322531916159504984, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1322531913038942783, authorId=1322531915987538516, language=CN, stringName=杨湛晔, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, 2, address=1.海南海控能源股份有限公司，海口　570125
2.海南绿色能源与环境工程技术研究院，海口　570125, bio={"content":"

杨湛晔（1981—　），男，硕士，高级工程师。研究方向：电力物联网及新型电力系统，能源互联网研究。E-mail：。

"}, bioImg=null, bioContent=

杨湛晔（1981—　），男，硕士，高级工程师。研究方向：电力物联网及新型电力系统，能源互联网研究。E-mail：。

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middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=4, address=4.国网河南省电力公司超高压公司，郑州　450000, bio={"content":"

赵靖雯（1998—　），女，硕士。研究方向：电气工程与自动化。E-mail：。

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赵靖雯（1998—　），女，硕士。研究方向：电气工程与自动化。E-mail：。

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王鹏（1983—　），男，博士，高级工程师。研究方向：智能配电网技术。E-mail：。

"}, bioImg=null, bioContent=

王鹏（1983—　），男，博士，高级工程师。研究方向：智能配电网技术。E-mail：。

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曾志辉（1978—　），男，博士，副教授。研究方向：电力电子和储能技术。E-mail：。

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曾志辉（1978—　），男，博士，副教授。研究方向：电力电子和储能技术。E-mail：。

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基于Canberra距离的柔性直流电网故障保护方法
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杨湛晔 1, 2 , 韦延方 3 , 赵靖雯 4 , 王鹏 5 , 曾志辉 3
电源学报 | 电力电子化电力系统 2026,24(6): 255-264
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电源学报 |电力电子化电力系统 2026 , 24 (6) : 255 -264
基于Canberra距离的柔性直流电网故障保护方法
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赵靖雯（1998—　），女，硕士。研究方向：电气工程与自动化。E-mail：。

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王鹏（1983—　），男，博士，高级工程师。研究方向：智能配电网技术。E-mail：。

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王鹏（1983—　），男，博士，高级工程师。研究方向：智能配电网技术。E-mail：。

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曾志辉（1978—　），男，博士，副教授。研究方向：电力电子和储能技术。E-mail：。

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曾志辉（1978—　），男，博士，副教授。研究方向：电力电子和储能技术。E-mail：。

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杨湛晔1, 2 , 韦延方3 , 赵靖雯4 , 王鹏5 , 曾志辉3
作者信息
  • 1.海南海控能源股份有限公司，海口　570125
  • 2.海南绿色能源与环境工程技术研究院，海口　570125
  • 3.河南理工大学电气工程与自动化学院，焦作　454003
  • 4.国网河南省电力公司超高压公司，郑州　450000
  • 5.国网河南省电力公司电力科学研究院，郑州　450052
通讯作者:
韦延方（1982—　），男，通信作者，博士，教授。研究方向：直流电网故障研究。E-mail：。
作者简介:

杨湛晔（1981—　），男，硕士，高级工程师。研究方向：电力物联网及新型电力系统，能源互联网研究。E-mail：。

赵靖雯（1998—　），女，硕士。研究方向：电气工程与自动化。E-mail：。

王鹏（1983—　），男，博士，高级工程师。研究方向：智能配电网技术。E-mail：。

曾志辉（1978—　），男，博士，副教授。研究方向：电力电子和储能技术。E-mail：。

Fault Protection Method for Flexible DC Power Grid Based on Canberra Distance
Zhanye YANG1, 2 , Yanfang WEI3 , Jingwen ZHAO4 , Peng WANG5 , Zhihui ZENG3
Affiliations
  • 1.Hainan Holdings Energy Co., Ltd., Haikou 570125, China
  • 2.Hainan Institute of Green Energy and Environmental Engineering Technology, Haikou 570125, China
  • 3.School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, China
  • 4.Ultra High Voltage Company, State Grid Henan Electric Power Company, Zhengzhou 450000, China
  • 5.Electric Power Research Institute, State Grid Henan Electric Power Company, Zhengzhou 450052, China
出版时间: 2026-06-30 doi: 10.13234/j.issn.2095-2805.2026.6.255
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摘要
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柔性直流配电网具有故障电流上升速度快且幅值高等特点，因此，直流线路故障的快速可靠识别是直流配电网亟需突破的关键技术。针对现有柔性直流电网单端保护选择性差、多端保护速动性差的问题，提出一种基于Canberra距离的柔性直流电网故障保护方法。首先，根据柔性直流电网发生区内、外故障时双端电流微分正负极性的差异性，引入Canberra距离计算线路两端采样的故障电流微分的极性相似度，以此来进行故障区域的诊断；其次，根据故障发生时故障线与非故障线的故障特征，利用两极线路电流微分的数值差异性构造比值来进行故障选极；最后，设置不同的故障情况，验证该方法对于不同工况的适用性。仿真结果表明：该保护方案在不同故障位置、不同限流电抗及不同过渡电阻下均能实现正确故障定位和选极。

柔性直流电网  /  故障电流微分  /  Canberra距离  /  故障识别  /  区域诊断

The flexible DC distribution network has characteristics such as a fast rising speed and a large amplitude of fault current. Therefore, the fast and reliable identification of DC line faults is a key technology that the DC distribution networks urgently need to break through. Aimed at the problems of poor selectivity of single-end protection and a slow speed of multi-end protection in the existing flexible DC power grids, a fault protection method for flexible DC power grid based on the Canberra distance is proposed. First, according to the difference in polarity of current differential between the two terminals under internal and external faults in the flexible DC power grid, the Canberra distance is introduced to calculate the polarity similarity of fault current differential sampled at both ends of the line, so as to perform diagnosis of the fault area. Second, based on the fault characteristics of fault and non-fault lines at the time of fault occurrence, a ratio is formulated using the numerical difference in current differential between the two poles, thus selecting the fault pole. Finally, different fault scenarios are set to verify the applicability of the proposed method under different working conditions. Simulation results show that the proposed protection scheme can achieve correct fault location and pole selection under the conditions of different fault locations, different values of current-limiting reactance and different transition resistances.

Flexible DC power grid  /  fault current differential  /  Canberra distance  /  fault identification  /  regional diagnosis
杨湛晔, 韦延方, 赵靖雯, 王鹏, 曾志辉. 基于Canberra距离的柔性直流电网故障保护方法. 电源学报, 2026 , 24 (6) : 255 -264 . DOI: 10.13234/j.issn.2095-2805.2026.6.255
Zhanye YANG, Yanfang WEI, Jingwen ZHAO, Peng WANG, Zhihui ZENG. Fault Protection Method for Flexible DC Power Grid Based on Canberra Distance[J]. Journal of Power Supply, 2026 , 24 (6) : 255 -264 . DOI: 10.13234/j.issn.2095-2805.2026.6.255
基金
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  • 国家自然科学基金资助项目(52177114)
  • 海南省自然科学基金资助项目(521RC1110)
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2026年第24卷第6期
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文章信息
doi: 10.13234/j.issn.2095-2805.2026.6.255
  • 接收时间：2024-05-31
  • 首发时间：2026-10-29
  • 出版时间：2026-06-30
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出版历史
  • 收稿日期：2024-05-31
  • 修回日期：2024-07-31
  • 录用日期：2024-08-13
基金
National Natural Science Foundation of China(52177114)
国家自然科学基金资助项目(52177114)
Hainan Provincial Natural Science Foundation of China(521RC1110)
海南省自然科学基金资助项目(521RC1110)
作者信息
    1.海南海控能源股份有限公司，海口　570125
    2.海南绿色能源与环境工程技术研究院，海口　570125
    3.河南理工大学电气工程与自动化学院，焦作　454003
    4.国网河南省电力公司超高压公司，郑州　450000
    5.国网河南省电力公司电力科学研究院，郑州　450052

通讯作者:

韦延方（1982—　），男，通信作者，博士，教授。研究方向：直流电网故障研究。E-mail：。
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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2026.6.255
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