Article(id=1223204291876339760, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20221305, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1655913600000, receivedDateStr=2022-06-23, revisedDate=1659369600000, revisedDateStr=2022-08-02, acceptedDate=null, acceptedDateStr=null, onlineDate=1769564229219, onlineDateStr=2026-01-28, pubDate=1684944000000, pubDateStr=2023-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769564229219, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769564229219, creator=13701087609, updateTime=1769564229219, updator=13701087609, issue=Issue{id=1223204286050452333, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='5', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769564227831, creator=13701087609, updateTime=1769567742010, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223219026013323264, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223219026013323265, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=211, endPage=215, ext={EN=ArticleExt(id=1223204292157358148, articleId=1223204291876339760, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Characteristics Analysis of Single-strand Inter-turn Short Circuit in Low Voltage Winding Wire Transposition of Distribution Transformer, columnId=1222940986234364233, journalTitle=Water Resources and Power, columnName=ELECTRICAL ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

In order to ensure that the conductor length of multiple parallel coils of power transformer is consistent and the current density is balanced, the structure transposition is usually carried out in the winding process. The actual operation shows that the insulation at the conductor transposition is easy to damage and leads to inter-turn short circuit fault. Aiming at the problems that the fault point is difficult to set and the electrical quantity cannot be directly detected in the actual test, this paper uses the 'field-circuit' coupling principle to take the distribution transformer with the model of S13-M-200/10, the low voltage winding is wound by two flat copper wires and the transposition point is in the middle of the winding as an example. Based on the finite element simulation software, the simulation analysis model with the same size as the physical structure is established. Through the comparison of the actual test value and the simulation analysis value of the performance parameters, on the basis of verifying the correctness of the model, the electrical characteristics and electrodynamics of the low voltage winding of the power transformer are studied when the single inter-turn short circuit occurs at the conductor transposition. The results show that when a single inter-turn short circuit occurs in the low voltage winding of the transformer, the loop current of dozens of times the rated current flows inside the short circuit ring, the fault phase current decreases slightly, and the active power loss increases sharply. Conductor transposition causes uneven distribution of axial force and radial force of the coil, and the winding is prone to instability and deformation. It is necessary to take mechanical and insulation strengthening measures at the conductor transposition.

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为保证电力变压器多股并绕线圈的导体长度一致、电流密度均衡,通常在其绕制过程中进行结构换位,实际运行表明导线换位处的绝缘容易损伤并导致匝间短路故障。针对实际试验中故障点难以设置、电气量无法直接检测等问题,利用“场-路”耦合原理,以型号为S13-M-200/10、低压绕组由两股扁铜线并绕、换位点在绕组中部的配电变压器为例,基于有限元仿真软件建立与实物结构尺寸相同的仿真分析模型,通过对比性能参数的实际试验值与仿真分析值,在验证模型正确性的基础上,研究电力变压器低压绕组在导线换位处发生单股匝间短路时的电气特征及电动力。研究表明,当变压器低压绕组发生单股匝间短路时,短路环内部流过数十倍额定电流的环路电流,故障相电流略有降低,有功损耗激增;导线换位引起线圈轴向力与辐向力分布不均,绕组容易失稳变形,需要对该导线换位处采取机械和绝缘加强措施。

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咸日常(1966-),男,教授、博导,研究方向为电力系统过电压、电气设备在线监测与故障诊断技术,Email:
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李智(1998-),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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李智(1998-),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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李智(1998-),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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配电变压器低压绕组导线换位处单股匝间短路特征分析
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李智 1 , 咸日常 1 , 崔川 2 , 胡玉耀 1 , 郭洋 1 , 郝艳 1 , 李佳琪 1
水电能源科学 | 电气工程 2023,41(5): 211-215
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水电能源科学 | 电气工程 2023, 41(5): 211-215
配电变压器低压绕组导线换位处单股匝间短路特征分析
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李智1 , 咸日常1 , 崔川2, 胡玉耀1, 郭洋1, 郝艳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 255049
  • 2.国网山东省电力公司淄博供电公司,山东 淄博 255000
  • 李智(1998-),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,研究方向为电力系统过电压、电气设备在线监测与故障诊断技术,Email:
Characteristics Analysis of Single-strand Inter-turn Short Circuit in Low Voltage Winding Wire Transposition of Distribution Transformer
Zhi LI1 , Ri-chang XIAN1 , Chuan CUI2, Yu-yao HU1, Yang GUO1, Yan HAO1, Jia-qi LI1
Affiliations
  • 1.College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China
  • 2.State Grid Shandong Zibo Power Supply Company, Zibo 255000, China
出版时间: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20221305
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为保证电力变压器多股并绕线圈的导体长度一致、电流密度均衡,通常在其绕制过程中进行结构换位,实际运行表明导线换位处的绝缘容易损伤并导致匝间短路故障。针对实际试验中故障点难以设置、电气量无法直接检测等问题,利用“场-路”耦合原理,以型号为S13-M-200/10、低压绕组由两股扁铜线并绕、换位点在绕组中部的配电变压器为例,基于有限元仿真软件建立与实物结构尺寸相同的仿真分析模型,通过对比性能参数的实际试验值与仿真分析值,在验证模型正确性的基础上,研究电力变压器低压绕组在导线换位处发生单股匝间短路时的电气特征及电动力。研究表明,当变压器低压绕组发生单股匝间短路时,短路环内部流过数十倍额定电流的环路电流,故障相电流略有降低,有功损耗激增;导线换位引起线圈轴向力与辐向力分布不均,绕组容易失稳变形,需要对该导线换位处采取机械和绝缘加强措施。

配电变压器  /  低压绕组  /  两股并绕  /  导线换位  /  匝间短路  /  电动力

In order to ensure that the conductor length of multiple parallel coils of power transformer is consistent and the current density is balanced, the structure transposition is usually carried out in the winding process. The actual operation shows that the insulation at the conductor transposition is easy to damage and leads to inter-turn short circuit fault. Aiming at the problems that the fault point is difficult to set and the electrical quantity cannot be directly detected in the actual test, this paper uses the 'field-circuit' coupling principle to take the distribution transformer with the model of S13-M-200/10, the low voltage winding is wound by two flat copper wires and the transposition point is in the middle of the winding as an example. Based on the finite element simulation software, the simulation analysis model with the same size as the physical structure is established. Through the comparison of the actual test value and the simulation analysis value of the performance parameters, on the basis of verifying the correctness of the model, the electrical characteristics and electrodynamics of the low voltage winding of the power transformer are studied when the single inter-turn short circuit occurs at the conductor transposition. The results show that when a single inter-turn short circuit occurs in the low voltage winding of the transformer, the loop current of dozens of times the rated current flows inside the short circuit ring, the fault phase current decreases slightly, and the active power loss increases sharply. Conductor transposition causes uneven distribution of axial force and radial force of the coil, and the winding is prone to instability and deformation. It is necessary to take mechanical and insulation strengthening measures at the conductor transposition.

distribution transformer  /  low-voltage winding  /  two side by side  /  conductor transposition  /  inter-turn short circuit  /  electrodynamic force
李智, 咸日常, 崔川, 胡玉耀, 郭洋, 郝艳, 李佳琪. 配电变压器低压绕组导线换位处单股匝间短路特征分析. 水电能源科学, 2023 , 41 (5) : 211 -215 . DOI: 10.20040/j.cnki.1000-7709.2023.20221305
Zhi LI, Ri-chang XIAN, Chuan CUI, Yu-yao HU, Yang GUO, Yan HAO, Jia-qi LI. Characteristics Analysis of Single-strand Inter-turn Short Circuit in Low Voltage Winding Wire Transposition of Distribution Transformer[J]. Water Resources and Power, 2023 , 41 (5) : 211 -215 . DOI: 10.20040/j.cnki.1000-7709.2023.20221305
  • 国家自然科学基金项目(51907109)
2023年第41卷第5期
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doi: 10.20040/j.cnki.1000-7709.2023.20221305
  • 接收时间:2022-06-23
  • 首发时间:2026-01-28
  • 出版时间:2023-05-25
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  • 收稿日期:2022-06-23
  • 修回日期:2022-08-02
基金
国家自然科学基金项目(51907109)
作者信息
    1.山东理工大学电气与电子工程学院,山东 淄博 255049
    2.国网山东省电力公司淄博供电公司,山东 淄博 255000

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咸日常(1966-),男,教授、博导,研究方向为电力系统过电压、电气设备在线监测与故障诊断技术,Email:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
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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