Article(id=1223196813063209111, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223196803663778281, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20221880, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1662652800000, receivedDateStr=2022-09-09, revisedDate=1667232000000, revisedDateStr=2022-11-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1769562446131, onlineDateStr=2026-01-28, pubDate=1692892800000, pubDateStr=2023-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769562446131, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769562446131, creator=13701087609, updateTime=1769562446131, updator=13701087609, issue=Issue{id=1223196803663778281, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='8', pageStart='1', pageEnd='222', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769562443888, creator=13701087609, updateTime=1769563793740, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223202465391166440, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223196803663778281, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223202465391166441, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223196803663778281, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=214, endPage=218, ext={EN=ArticleExt(id=1223196813910458603, articleId=1223196813063209111, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Electromagnetic Characteristics and Electrodynamic Analysis of Dry-type Transformer Winding Interturn Short Circuit Fault, columnId=1222940986234364233, journalTitle=Water Resources and Power, columnName=ELECTRICAL ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

The low voltage winding interturn insulation fault of dry-type transformer is not easy to find directly through the appearance of the phenomenon, and is difficult to real-time monitoring, seriously affecting the safe and stable operation of power systems. In view of the lack of fault detection methods due to insufficient research on the electromagnetic characteristics of single-turn interturn short-circuit faults in low-voltage windings of dry-type transformers, and the difficulty in setting interturn short-circuit faults in practical projects, finite element simulation software was used to establish a field-circuit coupling model which is consistent with the actual dry-type transformer, and the accuracy of the model was verified under rated operating conditions. On this basis, the variation rules of electromagnetic parameters of short-circuit turns at different positions were explored when interturn short-circuit faults occur in low-voltage windings. The distribution of electromagnetic force on short-circuit turns when interturn short-circuit faults occur in windings at different positions was simulated. The results show that when the interturn short circuit occurs at different positions of the winding, the maximum magnetic density appears in the outermost short-circuit turn; the outermost short-circuit turn is subjected to the largest radial force, and the innermost short-circuit turn is subjected to the largest axial force. Therefore, it provides a theoretical basis for on-line monitoring and protection technology of dry-type transformer interturn insulation, which is conducive to the research and implementation of measures to improve short-circuit resistance.

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干式变压器低压绕组的匝间绝缘故障不易通过外观表征直接发现,且难以实现实时监测,严重影响供电可靠性。针对干式变压器低压绕组单匝匝间短路故障时的电磁特征研究不足而导致故障检测方法缺失及实际研究中难以设置绕组匝间短路故障的问题,利用有限元仿真软件建立与实际干式变压器一致的“场-路”耦合模型,并验证了该模型在额定运行工况下的准确性。在此基础上探究低压绕组发生匝间短路故障时其短路点电流、短路匝电流、短路匝电流密度及短路匝辐向磁密和轴向磁密等电磁参数的变化规律,研究在绕组不同位置发生匝间短路故障时短路匝所受电动力的分布情况。结果表明,绕组不同位置发生匝间短路时,磁密最大值出现在最外层短路匝;最外层短路匝所受辐向力最大,最内层短路匝所受轴向力最大。研究结果为干式变压器匝间绝缘在线监测和保护技术提供了理论依据,有利于抗短路能力提升措施的研究与实施。

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咸日常(1966-),男,教授、博导,研究方向为电气设备状态检测与故障诊断技术,E-mail:
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郝艳(1997-),女,硕士研究生,研究方向为电气设备在线监测与故障诊断技术,E-mail:

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郝艳(1997-),女,硕士研究生,研究方向为电气设备在线监测与故障诊断技术,E-mail:

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郝艳(1997-),女,硕士研究生,研究方向为电气设备在线监测与故障诊断技术,E-mail:

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干式变压器绕组匝间短路故障的电磁特征及电动力分析
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郝艳 1 , 咸日常 1 , 胡玉耀 1 , 张海强 2 , 郭洋 1 , 李佳琪 1
水电能源科学 | 电气工程 2023,41(8): 214-218
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水电能源科学 | 电气工程 2023, 41(8): 214-218
干式变压器绕组匝间短路故障的电磁特征及电动力分析
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郝艳1 , 咸日常1 , 胡玉耀1, 张海强2, 郭洋1, 李佳琪1
作者信息
  • 1.山东理工大学电气与电子工程学院,山东 淄博 255000
  • 2.国网山东省电力公司淄博供电公司,山东 淄博 255000
  • 郝艳(1997-),女,硕士研究生,研究方向为电气设备在线监测与故障诊断技术,E-mail:

通讯作者:

咸日常(1966-),男,教授、博导,研究方向为电气设备状态检测与故障诊断技术,E-mail:
Electromagnetic Characteristics and Electrodynamic Analysis of Dry-type Transformer Winding Interturn Short Circuit Fault
Yan HAO1 , Ri-chang XIAN1 , Yu-yao HU1, Hai-qiang ZHANG2, Yang GUO1, Jia-qi LI1
Affiliations
  • 1.School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
  • 2.Zibo Power Supply Company, State Grid Shandong Electric Power Company, Zibo 255000, China
出版时间: 2023-08-25 doi: 10.20040/j.cnki.1000-7709.2023.20221880
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干式变压器低压绕组的匝间绝缘故障不易通过外观表征直接发现,且难以实现实时监测,严重影响供电可靠性。针对干式变压器低压绕组单匝匝间短路故障时的电磁特征研究不足而导致故障检测方法缺失及实际研究中难以设置绕组匝间短路故障的问题,利用有限元仿真软件建立与实际干式变压器一致的“场-路”耦合模型,并验证了该模型在额定运行工况下的准确性。在此基础上探究低压绕组发生匝间短路故障时其短路点电流、短路匝电流、短路匝电流密度及短路匝辐向磁密和轴向磁密等电磁参数的变化规律,研究在绕组不同位置发生匝间短路故障时短路匝所受电动力的分布情况。结果表明,绕组不同位置发生匝间短路时,磁密最大值出现在最外层短路匝;最外层短路匝所受辐向力最大,最内层短路匝所受轴向力最大。研究结果为干式变压器匝间绝缘在线监测和保护技术提供了理论依据,有利于抗短路能力提升措施的研究与实施。

干式变压器  /  有限元仿真  /  匝间短路  /  电磁特征  /  电动力

The low voltage winding interturn insulation fault of dry-type transformer is not easy to find directly through the appearance of the phenomenon, and is difficult to real-time monitoring, seriously affecting the safe and stable operation of power systems. In view of the lack of fault detection methods due to insufficient research on the electromagnetic characteristics of single-turn interturn short-circuit faults in low-voltage windings of dry-type transformers, and the difficulty in setting interturn short-circuit faults in practical projects, finite element simulation software was used to establish a field-circuit coupling model which is consistent with the actual dry-type transformer, and the accuracy of the model was verified under rated operating conditions. On this basis, the variation rules of electromagnetic parameters of short-circuit turns at different positions were explored when interturn short-circuit faults occur in low-voltage windings. The distribution of electromagnetic force on short-circuit turns when interturn short-circuit faults occur in windings at different positions was simulated. The results show that when the interturn short circuit occurs at different positions of the winding, the maximum magnetic density appears in the outermost short-circuit turn; the outermost short-circuit turn is subjected to the largest radial force, and the innermost short-circuit turn is subjected to the largest axial force. Therefore, it provides a theoretical basis for on-line monitoring and protection technology of dry-type transformer interturn insulation, which is conducive to the research and implementation of measures to improve short-circuit resistance.

dry-type transformer  /  finite element simulation  /  interturn short circuit  /  electromagnetic characteristics  /  electric power
郝艳, 咸日常, 胡玉耀, 张海强, 郭洋, 李佳琪. 干式变压器绕组匝间短路故障的电磁特征及电动力分析. 水电能源科学, 2023 , 41 (8) : 214 -218 . DOI: 10.20040/j.cnki.1000-7709.2023.20221880
Yan HAO, Ri-chang XIAN, Yu-yao HU, Hai-qiang ZHANG, Yang GUO, Jia-qi LI. Electromagnetic Characteristics and Electrodynamic Analysis of Dry-type Transformer Winding Interturn Short Circuit Fault[J]. Water Resources and Power, 2023 , 41 (8) : 214 -218 . DOI: 10.20040/j.cnki.1000-7709.2023.20221880
  • 国家重点研发计划(2017YFB0902800)
2023年第41卷第8期
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doi: 10.20040/j.cnki.1000-7709.2023.20221880
  • 接收时间:2022-09-09
  • 首发时间:2026-01-28
  • 出版时间:2023-08-25
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  • 收稿日期:2022-09-09
  • 修回日期:2022-11-01
基金
国家重点研发计划(2017YFB0902800)
作者信息
    1.山东理工大学电气与电子工程学院,山东 淄博 255000
    2.国网山东省电力公司淄博供电公司,山东 淄博 255000

通讯作者:

咸日常(1966-),男,教授、博导,研究方向为电气设备状态检测与故障诊断技术,E-mail:
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2种不同金属材料的力学参数

Family
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Number of
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种数
Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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