Article(id=1209927014912495950, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209927008822366333, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2024.02.011, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1677600000000, receivedDateStr=2023-03-01, revisedDate=1679328000000, revisedDateStr=2023-03-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1766398679712, onlineDateStr=2025-12-22, pubDate=1708358400000, pubDateStr=2024-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766398679712, onlineIssueDateStr=2025-12-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766398679712, creator=13701087609, updateTime=1766398679712, updator=13701087609, issue=Issue{id=1209927008822366333, tenantId=1146029695717560320, journalId=1149653034449285133, year='2024', volume='57', issue='2', pageStart='1', pageEnd='128', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1766398678260, creator=13701087609, updateTime=1766563829065, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210619701554705052, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209927008822366333, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210619701554705053, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209927008822366333, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=80, endPage=85, ext={EN=ArticleExt(id=1209927015302566241, articleId=1209927014912495950, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Research on anti-corona performance of stator bars and windings for high altitude large hydrogenerators, columnId=1190369198472794288, journalTitle=Insulating Materials, columnName=Insulation Technology, runingTitle=null, highlight=null, articleAbstract=
Simulation calculations were conducted on the stator bars and windings of generator in a high altitude area by establishing a simulation model, and the rationality of the anti-corona design of the stator bar and winding was explored. According to the design, the stator bars and windings were manufactured and the reliability of the anti-corona structure was further verified through experiments. The simulation calculation results show that when the altitude is 3 000 m, the maximum field strength of the stator bar during the operation voltage, anti-corona assessment voltage, and voltage withstand process is 0.32, 0.44, and 0.53 kV/mm, respectively, and the maximum loss is 2.19×105, 1.46×106, and 6.34×106 W/m3, respectively. The maximum electronic density between the layers of the generator winding is 1.32×1017 m-3. After the modification of the oblique clearance of the stator winding, the maximum field strength of the stator bar during the operation voltage, anti-corona assessment voltage, and voltage withstand process is 0.78, 1.50, and 2.14 kV/mm, respectively, and the maximum loss is 3.01×105, 6.8×105, and 3.23×106 W/m3, respectively. The experimental results show that the stator bars can pass the corona test under 40.7 kV and the withstand voltage test under 73.5 kV for 1 minute. With the increase of altitude, the ultraviolet photon number of the winding at 1.1Un increases gradually, while that number is less than 1 000 when the altitude is below 3500 m. The anti-corona performance of the designed winding meets the design and operation requirements of the unit.
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通过建立仿真模型,对某高海拔地区发电机定子线棒及绕组进行仿真计算,探究了定子线棒及绕组防晕设计的合理性。根据设计制造了定子线棒及绕组,并通过试验验证了防晕结构的可靠性。仿真计算结果表明:在海拔高度为3 000 m时,定子线棒在运行电压、防晕试验电压、耐压试验电压条件下的过程中最大场强分别为0.32、0.44、0.53 kV/mm,最大损耗分别为2.19×105、1.46×106、6.34×106 W/m3,发电机绕组层间最大电子密度为1.32×1017 m-3。对定子绕组斜边间隙进行修正设计后,定子绕组在运行电压、防晕试验电压、耐压试验电压条件下的最大场强分别为0.78、1.50、2.14 kV/mm,最大损耗分别为3.01×105、6.8×105、3.23×106 W/m3。试验结果表明:定子线棒能通过40.7 kV电晕试验及73.5 kV耐压1 min试验;定子绕组能通过30 kV电晕试验及52.4 kV耐压1 min试验。随着海拔高度的提升,定子绕组在1.1Un下的紫外光子数逐渐增大,当海拔高度低于3 500 m时,紫外光子数均小于1 000,表明所设计的绕组防晕性能满足机组设计及运行需求。
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张斯翔(1990-),男(汉族),湖北宜昌人,高级工程师,主要从事水电与新能源领域的研究工作。
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1China Three Gorges Construction Engineering Corporation, Chengdu 610000, China
2School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217475340591611961, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, authorId=1217475340398673961, language=CN, stringName=张斯翔, firstName=斯翔, middleName=null, lastName=张, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1中国三峡建工(集团)有限公司,四川 成都 610000
2武汉大学 电气与自动化学院, 湖北 武汉 430072, bio={"content":"
张斯翔(1990-),男(汉族),湖北宜昌人,高级工程师,主要从事水电与新能源领域的研究工作。
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张斯翔(1990-),男(汉族),湖北宜昌人,高级工程师,主要从事水电与新能源领域的研究工作。
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3东方电气集团东方电机有限公司,四川 德阳 618000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217475340277039130, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, xref=3, ext=[AuthorCompanyExt(id=1217475340289622045, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, companyId=1217475340277039130, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3东方电气集团东方电机有限公司,四川 德阳 618000)])])], keywords=[Keyword(id=1217475343418572994, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, orderNo=1, keyword=large hydroelectric unit), Keyword(id=1217475343502459081, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, orderNo=2, keyword=stator bars), Keyword(id=1217475343640871122, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, orderNo=3, keyword=stator windings), Keyword(id=1217475343741534428, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, orderNo=4, keyword=anti-corona performance), Keyword(id=1217475343825420515, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, orderNo=1, keyword=大型水电机组), Keyword(id=1217475343896723689, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, orderNo=2, keyword=定子线棒), Keyword(id=1217475343984804079, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, orderNo=3, keyword=定子绕组), Keyword(id=1217475344114827512, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, orderNo=4, keyword=防晕性能)], refs=[Reference(id=1217475348674036158, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, doi=null, pmid=null, pmcid=null, year=2021, volume=44, issue=9, pageStart=9, pageEnd=11, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=李伟, journalName=水电站机电技术, refType=null, unstructuredReference=李伟.高海拔条件下降低定子电晕工艺措施改进简述[J].
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Electric field intensity distribution of stator bar, figureFileSmall=OV8NPz7PIKq/Pankg4QhZA==, figureFileBig=TxyHz0IAPHu7j5D2V5pwbw==, tableContent=null), ArticleFig(id=1217475344471343376, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图1, caption=
定子线棒场强分布图, figureFileSmall=OV8NPz7PIKq/Pankg4QhZA==, figureFileBig=TxyHz0IAPHu7j5D2V5pwbw==, tableContent=null), ArticleFig(id=1217475344580395289, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.2, caption=
Loss distribution of stator bar, figureFileSmall=G2plk1nwLsJdTTd5nnQL7w==, figureFileBig=erXXVmFsC292apBisV+JiA==, tableContent=null), ArticleFig(id=1217475344660087072, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图2, caption=
定子线棒损耗分布图, figureFileSmall=G2plk1nwLsJdTTd5nnQL7w==, figureFileBig=erXXVmFsC292apBisV+JiA==, tableContent=null), ArticleFig(id=1217475344748167463, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.3, caption=
Geometry model of stator winding bevel spacing, figureFileSmall=bZyZs+zQOj7BihI0QJ71UA==, figureFileBig=5hkaR3/oCdPONp8TfCJWOg==, tableContent=null), ArticleFig(id=1217475344819470641, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图3, caption=
定子绕组斜边间隙几何结构示意图, figureFileSmall=bZyZs+zQOj7BihI0QJ71UA==, figureFileBig=5hkaR3/oCdPONp8TfCJWOg==, tableContent=null), ArticleFig(id=1217475344928522554, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.4, caption=
Electron density distribution at different altitudes, figureFileSmall=RDcl3WeCNfrxcZlIgW+NDw==, figureFileBig=7Otylin0G+tlsVht+7fu3Q==, tableContent=null), ArticleFig(id=1217475345016602941, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图4, caption=
不同海拔下放电的电子密度分布图, figureFileSmall=RDcl3WeCNfrxcZlIgW+NDw==, figureFileBig=7Otylin0G+tlsVht+7fu3Q==, tableContent=null), ArticleFig(id=1217475345108877634, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.5, caption=
Electric field intensity distribution of stator winding, figureFileSmall=iHKCmqLN8zeI3SkC0NueuA==, figureFileBig=jwPRStSjt1QXp9VujpmPiA==, tableContent=null), ArticleFig(id=1217475345234706763, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图5, caption=
定子绕组场强分布, figureFileSmall=iHKCmqLN8zeI3SkC0NueuA==, figureFileBig=jwPRStSjt1QXp9VujpmPiA==, tableContent=null), ArticleFig(id=1217475345314398541, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.6, caption=
Loss distribution of stator winding, figureFileSmall=zqX1GWL48qTBuv0z2hgVhQ==, figureFileBig=KXGLw5tkxfXPcwYKhzA9Jg==, tableContent=null), ArticleFig(id=1217475345402478935, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图6, caption=
定子绕组损耗分布, figureFileSmall=zqX1GWL48qTBuv0z2hgVhQ==, figureFileBig=KXGLw5tkxfXPcwYKhzA9Jg==, tableContent=null), ArticleFig(id=1217475345503142238, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.7, caption=
Test winding, figureFileSmall=KhnLpVcCiBZVuCJQw+j2Jg==, figureFileBig=jWA7iaESYL6wI0cp95KQ3Q==, tableContent=null), ArticleFig(id=1217475345733828963, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图7, caption=
试验绕组, figureFileSmall=KhnLpVcCiBZVuCJQw+j2Jg==, figureFileBig=jWA7iaESYL6wI0cp95KQ3Q==, tableContent=null), ArticleFig(id=1217475345859658095, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.8, caption=
Large multifunctional artificial climate chamber simulation test chart, figureFileSmall=1iBoQ8zF21AG7BqegJ5ACw==, figureFileBig=wSRywOf4izaMZG3mV96vsQ==, tableContent=null), ArticleFig(id=1217475345943544179, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图8, caption=
大型多功能人工气候室模拟试验图, figureFileSmall=1iBoQ8zF21AG7BqegJ5ACw==, figureFileBig=wSRywOf4izaMZG3mV96vsQ==, tableContent=null), ArticleFig(id=1217475346044207484, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Fig.9, caption=
UV photon count of windings at different altitudes, figureFileSmall=lXVnynufaG9v5wPUvydipA==, figureFileBig=JnI/Ku8kSqDfPBAVszjN5Q==, tableContent=null), ArticleFig(id=1217475346128093568, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=图9, caption=
不同海拔高度下的绕组紫外光子数, figureFileSmall=lXVnynufaG9v5wPUvydipA==, figureFileBig=JnI/Ku8kSqDfPBAVszjN5Q==, tableContent=null), ArticleFig(id=1217475347428327812, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Tab.1, caption=
Correction coefficient calculation value, figureFileSmall=null, figureFileBig=null, tableContent=
| 海拔高度/m | 定子绕组电晕 | 定子耐受电压 | 系数偏差 |
|---|
| 1 000 | 1.056 | 1.000 | 0.056 |
| 2 000 | 1.188 | 1.131 | 0.057 |
| 3 000 | 1.357 | 1.278 | 0.079 |
| 4 000 | 1.583 | 1.445 | 0.138 |
| 5 000 | 1.900 | 1.634 | 0.266 |
), ArticleFig(id=1217475347528991114, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=表1, caption=
修正系数计算值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 海拔高度/m | 定子绕组电晕 | 定子耐受电压 | 系数偏差 |
|---|
| 1 000 | 1.056 | 1.000 | 0.056 |
| 2 000 | 1.188 | 1.131 | 0.057 |
| 3 000 | 1.357 | 1.278 | 0.079 |
| 4 000 | 1.583 | 1.445 | 0.138 |
| 5 000 | 1.900 | 1.634 | 0.266 |
), ArticleFig(id=1217475347625460113, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Tab.2, caption=
Anti-corona assessment voltage value of stator bar after correction, figureFileSmall=null, figureFileBig=null, tableContent=
| 额定电压Un/kV | 单支线棒起晕考核电压/kV | 修正后起晕考核电压/kV | 单支线棒耐压试验电压/kV | 修正后耐压试验电压/kV |
|---|
| 20 | 30 | 40.7 | 57.5 | 73.5 |
), ArticleFig(id=1217475347768066451, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=表2, caption=
定子线棒修正后防晕考核电压值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 额定电压Un/kV | 单支线棒起晕考核电压/kV | 修正后起晕考核电压/kV | 单支线棒耐压试验电压/kV | 修正后耐压试验电压/kV |
|---|
| 20 | 30 | 40.7 | 57.5 | 73.5 |
), ArticleFig(id=1217475347872924055, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Tab.3, caption=
The parameters of simulation calculation, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 电导率/(S/m) | 相对介电常数 |
|---|
| 空气 | 1×10-15 | 1.0 |
| 铜导体 | 6×107 | 1.0 |
| 主绝缘 | 1×10-12 | 4.7 |
| 低阻 | 1×10-6 | 8.8 |
| 中阻 | 1×10-8 | 5.3 |
| 中高阻 | 1×10-10 | 5.2 |
| 高阻 | 1×10-12 | 5.4 |
), ArticleFig(id=1217475347986170269, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=表3, caption=
COMSOL仿真计算相关参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 电导率/(S/m) | 相对介电常数 |
|---|
| 空气 | 1×10-15 | 1.0 |
| 铜导体 | 6×107 | 1.0 |
| 主绝缘 | 1×10-12 | 4.7 |
| 低阻 | 1×10-6 | 8.8 |
| 中阻 | 1×10-8 | 5.3 |
| 中高阻 | 1×10-10 | 5.2 |
| 高阻 | 1×10-12 | 5.4 |
), ArticleFig(id=1217475348082639267, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Tab.4, caption=
Corona resistance and voltage withstand test of stator bars, figureFileSmall=null, figureFileBig=null, tableContent=
| 定子线棒 | 起晕电压/kV | 试验结果 |
|---|
| 1# | >40.7 | 通过 |
| 2# | >40.7 | 通过 |
| 3# | >40.7 | 通过 |
| 4# | >40.7 | 通过 |
| 5# | >40.7 | 通过 |
), ArticleFig(id=1217475348212662697, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=表4, caption=
定子线棒防晕及耐电压试验(制造基地)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 定子线棒 | 起晕电压/kV | 试验结果 |
|---|
| 1# | >40.7 | 通过 |
| 2# | >40.7 | 通过 |
| 3# | >40.7 | 通过 |
| 4# | >40.7 | 通过 |
| 5# | >40.7 | 通过 |
), ArticleFig(id=1217475348330103210, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=EN, label=Tab.5, caption=
Stator winding starting corona at different altitudes, figureFileSmall=null, figureFileBig=null, tableContent=
| 海拔高度/m | 温度/℃ | 湿度/% | 绕组起晕情况 | 工频交流耐压试验 |
|---|
| 0 | 29.5 | 59 | 不起晕 | 通过 |
| 1 000 | 27.7 | 59 | 不起晕 | 通过 |
| 2 000 | 27.0 | 57 | 不起晕 | 通过 |
| 2 500 | 28.8 | 53 | 不起晕 | 通过 |
| 3 000 | 30.1 | 48 | 不起晕 | 通过 |
| 3 500 | 29.5 | 46 | 局部起晕 | 通过 |
| 4 000 | 29.4 | 50 | 起晕 | 通过 |
| 5 000 | 28.5 | 53 | 起晕 | 通过 |
), ArticleFig(id=1217475348430766516, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209927014912495950, language=CN, label=表5, caption=
不同海拔高度下绕组的起晕情况
, figureFileSmall=null, figureFileBig=null, tableContent=
| 海拔高度/m | 温度/℃ | 湿度/% | 绕组起晕情况 | 工频交流耐压试验 |
|---|
| 0 | 29.5 | 59 | 不起晕 | 通过 |
| 1 000 | 27.7 | 59 | 不起晕 | 通过 |
| 2 000 | 27.0 | 57 | 不起晕 | 通过 |
| 2 500 | 28.8 | 53 | 不起晕 | 通过 |
| 3 000 | 30.1 | 48 | 不起晕 | 通过 |
| 3 500 | 29.5 | 46 | 局部起晕 | 通过 |
| 4 000 | 29.4 | 50 | 起晕 | 通过 |
| 5 000 | 28.5 | 53 | 起晕 | 通过 |
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