首页 期刊 论文 学科刊群 资讯 加盟 关于
EN
image
Article(id=1209867859002528400, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209867853138883038, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2024.01.014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1684944000000, receivedDateStr=2023-05-25, revisedDate=1692288000000, revisedDateStr=2023-08-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1766384575844, onlineDateStr=2025-12-22, pubDate=1705680000000, pubDateStr=2024-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766384575844, onlineIssueDateStr=2025-12-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766384575844, creator=13701087609, updateTime=1766384575844, updator=13701087609, issue=Issue{id=1209867853138883038, tenantId=1146029695717560320, journalId=1149653034449285133, year='2024', volume='57', issue='1', pageStart='1', pageEnd='121', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1766384574446, creator=13701087609, updateTime=1766563804426, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210619598207054470, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209867853138883038, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210619598207054471, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209867853138883038, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=94, endPage=100, ext={EN=ArticleExt(id=1209867859266769561, articleId=1209867859002528400, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Detection and analysis of interlayer gap discharge in hydrogenerator stator winding based on partial discharge, columnId=1192878364340924664, journalTitle=Insulating Materials, columnName=Test and Analysis, runingTitle=null, highlight=null, articleAbstract=

In order to improve the reliability of interlayer gap discharge faults diagnosis in winding, taking a hydrogenerator stator winding as the experimental object, the influencing factors of diagnosing interlayer gap discharge through partial discharge were studied. Firstly, the characteristics of interlayer gap discharge in winding under the superposition of multiple discharge sources were obtained through offline test, online test, and simulation test. Then, by simulating the electrical conduction attenuation of bar and combined with the generator winding structure and detection distance, the effect of detection distance on the detection results was analyzed. The results show that the winding interlayer gap discharge has independent characteristics, the pulse distribution is suspended in PRPD pattern and has symmetrical positive and negative polarities. The pulse peak values are located around 45° and 225°. In one phase, the positive and negative polarity pulse peak values simultaneously deviate to the right of 45° and 225°, while in the other phase, the positive and negative polarity pulse peak values simultaneously deviate to the left of 45° and 225°. When the winding structure is different, the distribution of discharge gaps and the length of lead ring are also different, resulting in significant differences in detection distance, which has great effect on the amplitude detection results of partial discharge signals. If only electrical conduction is considered, for every one meter increase in detection distance, the average attenuation of partial discharge amplitude is approximately 10%. When only one closer phase can detect gap discharge, the interphase analysis method fails. Even there are multiple discharge sources and gap discharge simultaneously in winding, the interlayer gap discharge can be identified through the suspended characteristics of gap discharge PRPD pattern. The detection range has an impact on the identification of partial discharge patterns. When the global spectra with large range is complete, while the local patterns overlap with each other, the specific faults cannot be identified. When the global spectra with small range is incomplete, while the local patterns are clear, the specific faults can be identified.

, correspAuthors=null, 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, authorCompany=null, fund=null, authors=null, authorsList=Zengjie YANG, Xianfeng ZHAO, Xueming ZHANG, Jian LI, Jianming LIU, Yongxin SUN), CN=ArticleExt(id=1209867866669716403, articleId=1209867859002528400, tenantId=1146029695717560320, journalId=1149653034449285133, language=CN, title=基于局部放电的水轮发电机定子绕组层间间隙放电的检测与分析, columnId=1192878364483531003, journalTitle=绝缘材料, columnName=测试与分析, runingTitle=null, highlight=null, articleAbstract=

为提高绕组层间间隙放电故障诊断的可靠性，以水轮发电机定子绕组为试验对象，研究了通过局部放电诊断层间间隙放电时的影响因素。首先通过离线试验、在线试验、模拟试验方法获取绕组多放电源叠加时的层间间隙放电局放特征，然后通过线棒模拟电气传导衰减，结合发电机绕组结构、检测距离，分析检测距离对检测结果的影响。结果表明：绕组层间的间隙放电有独立特征，在其PRPD模式图中脉冲分布呈悬浮状且具有对称的正负极性，脉冲峰值位于45°和225°前后，两相中一相的正负极性脉冲峰值同时向右偏离45°和225°，另一相的正负极性脉冲峰值同时向左偏离45°和225°；当绕组结构不同时，放电间隙分布和汇流环长度也不同，由此造成的检测距离差异对局部放电信号幅值检测结果有较大影响，如果只考虑电气传导，检测距离每增大1 m，局部放电幅值平均衰减约10%，当只有距离较近的一相能检测到间隙放电时相间分析方法失效；即使绕组中同时存在多个放电源和间隙放电也可以通过间隙放电PRPD模式图的悬浮特征识别层间间隙放电；检测量程对局部放电模式识别有影响，当大量程全局图谱完整但局部模式相互重叠时无法识别具体故障，当小量程全局图谱不完整但局部模式图清晰时可识别具体故障。

, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=LM3oVpKgPCVhqf6IwtoSpA==, magXml=nkmG9LZGeCN1egeyZHuMaQ==, pdfUrl=null, pdf=DGUc4zfKbZSw7uYPKzG+pw==, pdfFileSize=8873008, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=+Vxd/pzKg4WgFNkYRS4lMw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=dSpKdqX0z+qUmmbA+CovIA==, mapNumber=null, authorCompany=null, fund=null, authors=

杨增杰（1982-），男（汉族），云南宣威人，高级工程师，研究方向为大型水轮发电机的状态评估。

, authorsList=杨增杰, 赵显峰, 张学明, 李坚, 刘剑明, 孙永鑫)}, authors=[Author(id=1217475411706037211, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217475411794117604, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475411706037211, language=EN, stringName=Zengjie YANG, firstName=Zengjie, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217475411886392299, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475411706037211, language=CN, stringName=杨增杰, firstName=增杰, middleName=null, lastName=杨, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000, bio={"content":"

杨增杰（1982-），男（汉族），云南宣威人，高级工程师，研究方向为大型水轮发电机的状态评估。

"}, bioImg=null, bioContent=

杨增杰（1982-），男（汉族），云南宣威人，高级工程师，研究方向为大型水轮发电机的状态评估。

, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217475411383075777, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=1, ext=[AuthorCompanyExt(id=1217475411391464385, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China), AuthorCompanyExt(id=1217475411395658690, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000)])]), Author(id=1217475411970278385, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217475412129661948, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475411970278385, language=EN, stringName=Xianfeng ZHAO, firstName=Xianfeng, middleName=null, lastName=ZHAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217475412297433091, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475411970278385, language=CN, stringName=赵显峰, firstName=显峰, middleName=null, lastName=赵, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217475411383075777, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=1, ext=[AuthorCompanyExt(id=1217475411391464385, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China), AuthorCompanyExt(id=1217475411395658690, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000)])]), Author(id=1217475412377124872, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217475412477788179, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475412377124872, language=EN, stringName=Xueming ZHANG, firstName=Xueming, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217475412574257178, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475412377124872, language=CN, stringName=张学明, firstName=学明, middleName=null, lastName=张, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217475411383075777, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=1, ext=[AuthorCompanyExt(id=1217475411391464385, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China), AuthorCompanyExt(id=1217475411395658690, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000)])]), Author(id=1217475412695892004, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217475412804943913, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475412695892004, language=EN, stringName=Jian LI, firstName=Jian, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217475412939161647, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475412695892004, language=CN, stringName=李坚, firstName=坚, middleName=null, lastName=李, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1, address=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217475411383075777, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=1, ext=[AuthorCompanyExt(id=1217475411391464385, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China), AuthorCompanyExt(id=1217475411395658690, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000)])]), Author(id=1217475413048213557, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217475413153071162, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475413048213557, language=EN, stringName=Jianming LIU, firstName=Jianming, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=2, address=2Jinghong Hydropower Station, Huaneng Lancang River Hydropower Inc., Jinghong 666100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217475413224374334, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475413048213557, language=CN, stringName=刘剑明, firstName=剑明, middleName=null, lastName=刘, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=2, address=2华能澜沧江水电股份有限公司景洪水电厂,云南 景洪 666100, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217475411487933384, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=2, ext=[AuthorCompanyExt(id=1217475411496321994, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411487933384, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2Jinghong Hydropower Station, Huaneng Lancang River Hydropower Inc., Jinghong 666100, China), AuthorCompanyExt(id=1217475411500516299, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411487933384, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2华能澜沧江水电股份有限公司景洪水电厂,云南 景洪 666100)])]), Author(id=1217475413291483202, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1217475413387952199, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475413291483202, language=EN, stringName=Yongxin SUN, firstName=Yongxin, middleName=null, lastName=SUN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=3, address=3National Engineering Research Center Hydropower Equipment, Harbin 150040, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1217475413480226893, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, authorId=1217475413291483202, language=CN, stringName=孙永鑫, firstName=永鑫, middleName=null, lastName=孙, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=3, address=3哈动国家水力发电设备工程技术研究中心有限公司,黑龙江 哈尔滨 150040, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1217475411609568210, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=3, ext=[AuthorCompanyExt(id=1217475411613762516, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411609568210, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3National Engineering Research Center Hydropower Equipment, Harbin 150040, China), AuthorCompanyExt(id=1217475411622151125, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411609568210, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3哈动国家水力发电设备工程技术研究中心有限公司,黑龙江 哈尔滨 150040)])])], keywords=[Keyword(id=1217475414826598486, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, orderNo=1, keyword=hydrogenerator), Keyword(id=1217475414935650397, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, orderNo=2, keyword=interlayer gap discharge), Keyword(id=1217475415044702306, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, orderNo=3, keyword=PRPD), Keyword(id=1217475415124394085, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, orderNo=4, keyword=propagation attenuation), Keyword(id=1217475415267000428, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, orderNo=5, keyword=winding structure), Keyword(id=1217475415359275121, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, orderNo=6, keyword=suspension characteristics), Keyword(id=1217475415459938422, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, orderNo=1, keyword=水轮发电机), Keyword(id=1217475415573184633, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, orderNo=2, keyword=层间间隙放电), Keyword(id=1217475415657070716, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, orderNo=3, keyword=PRPD), Keyword(id=1217475415728373890, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, orderNo=4, keyword=传播衰减), Keyword(id=1217475415837425798, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, orderNo=5, keyword=绕组结构), Keyword(id=1217475415938089099, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, orderNo=6, keyword=悬浮特征)], refs=[Reference(id=1217475420832842005, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2021, volume=54, issue=4, pageStart=58, pageEnd=63, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=王新, 杨敏, 金泱, journalName=绝缘材料, refType=null, unstructuredReference=王新,杨敏,金泱,等.基于热老化的发电机定子线棒局部放电特性研究[J].绝缘材料,2021,54(4):58-63., articleTitle=基于热老化的发电机定子线棒局部放电特性研究, refAbstract=null), Reference(id=1217475420899950872, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2021, volume=54, issue=7, pageStart=53, pageEnd=58, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=戈宝军, 黄启昭, 陶大军, journalName=绝缘材料, refType=null, unstructuredReference=戈宝军,黄启昭,陶大军,等.电机线棒环氧云母绝缘老化特性研究[J].绝缘材料,2021,54(7):53-58., articleTitle=电机线棒环氧云母绝缘老化特性研究, refAbstract=null), Reference(id=1217475420979642650, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2020, volume=35, issue=14, pageStart=3065, pageEnd=3074, url=null, language=null, rfNumber=[3], rfOrder=2, authorNames=高俊国, 孟睿潇, 胡海涛, journalName=电工技术学报, refType=null, unstructuredReference=高俊国,孟睿潇,胡海涛,等.电机定子绝缘老化寿命预测研究进展[J].电工技术学报,2020,35(14):3065-3074., articleTitle=电机定子绝缘老化寿命预测研究进展, refAbstract=null), Reference(id=1217475421055140123, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2022, volume=null, issue=4, pageStart=29, pageEnd=37, url=null, language=null, rfNumber=[4], rfOrder=3, authorNames=满宇光, 兰东宏, 赵阳, journalName=大电机技术, refType=null, unstructuredReference=满宇光,兰东宏,赵阳,等.大型水轮发电机绕组端部电晕问题探讨[J].大电机技术,2022(4):29-37., articleTitle=大型水轮发电机绕组端部电晕问题探讨, refAbstract=null), Reference(id=1217475421130637598, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2022, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[5], rfOrder=4, authorNames=HUZMEZANM, journalName=null, refType=null, unstructuredReference=HUZMEZANM. Reflections on the on-line partial discharge monitoring and analysis for condition assessment of large generators and motors[C]//2022 Electrical Insulation Conference. Knoxville, USA:IEEE,2022., articleTitle=Reflections on the on-line partial discharge monitoring and analysis for condition assessment of large generators and motors, refAbstract=null), Reference(id=1217475421214523680, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2019, volume=null, issue=2, pageStart=25, pageEnd=28, url=null, language=null, rfNumber=[6], rfOrder=5, authorNames=马咸, 杨海峰, 苏涛, journalName=大电机技术, refType=null, unstructuredReference=马咸,杨海峰,苏涛,等.基于紫外成像法的发电机定子电晕处理效果定量评估研究[J].大电机技术,2019(2):25-28., articleTitle=基于紫外成像法的发电机定子电晕处理效果定量评估研究, refAbstract=null), Reference(id=1217475421285826849, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2016, volume=32, issue=2, pageStart=119, pageEnd=121, url=null, language=null, rfNumber=[7], rfOrder=6, authorNames=杨增杰, 谭尚仁, journalName=云南水力发电, refType=null, unstructuredReference=杨增杰,谭尚仁.紫外成像仪在发电机电晕试验中的应用[J].云南水力发电,2016,32(2):119-121., articleTitle=紫外成像仪在发电机电晕试验中的应用, refAbstract=null), Reference(id=1217475421361324323, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2017, volume=null, issue=6, pageStart=25, pageEnd=29, url=null, language=null, rfNumber=[8], rfOrder=7, authorNames=胡胜, 郝剑波, 罗忠启, journalName=大电机技术, refType=null, unstructuredReference=胡胜,郝剑波,罗忠启,等.基于噪声频段提取的水轮发电机故障诊断方法[J].大电机技术,2017(6):25-29., articleTitle=基于噪声频段提取的水轮发电机故障诊断方法, refAbstract=null), Reference(id=1217475421445210405, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2020, volume=15, issue=3, pageStart=1269, pageEnd=1280, url=null, language=null, rfNumber=[9], rfOrder=8, authorNames=LEES H, KONGT S, KIMH D, journalName=Journal of Electrical Engineering and Technology, refType=null, unstructuredReference=LEES H, KONGT S, KIMH D. Analysis of insulation diagnosis for generator-motor stator winding in pumped storage power plant[J]. Journal of Electrical Engineering and Technology,2020,15(3):1269-1280., articleTitle=Analysis of insulation diagnosis for generator-motor stator winding in pumped storage power plant, refAbstract=null), Reference(id=1217475421516513576, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2022, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[10], rfOrder=9, authorNames=STONEG, CAVALLINIA, BEHRMANNG A, journalName=null, refType=null, unstructuredReference=STONEG, CAVALLINIA, BEHRMANNG A. Review of the history of the development of partial discharge testing[C]//2022 Electrical Insulation Conference. Knoxville, USA:IEEE,2022., articleTitle=Review of the history of the development of partial discharge testing, refAbstract=null), Reference(id=1217475421579428137, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2021, volume=54, issue=7, pageStart=10, pageEnd=24, url=null, language=null, rfNumber=[11], rfOrder=10, authorNames=范路, 陆云才, 陶风波, journalName=绝缘材料, refType=null, unstructuredReference=范路,陆云才,陶风波,等.人工智能在局部放电检测中的应用(二):模式识别与状态评估[J].绝缘材料,2021,54(7):10-24., articleTitle=人工智能在局部放电检测中的应用(二):模式识别与状态评估, refAbstract=null), Reference(id=1217475421650731305, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2021, volume=54, issue=5, pageStart=10, pageEnd=20, url=null, language=null, rfNumber=[12], rfOrder=11, authorNames=陆云才, 范路, 陶风波, journalName=绝缘材料, refType=null, unstructuredReference=陆云才,范路,陶风波,等.人工智能在局部放电检测中的应用(一):去噪与故障定位[J].绝缘材料,2021,54(5):10-20., articleTitle=人工智能在局部放电检测中的应用(一):去噪与故障定位, refAbstract=null), Reference(id=1217475421709451563, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2022, volume=15, issue=null, pageStart=326, pageEnd=null, url=null, language=null, rfNumber=[13], rfOrder=12, authorNames=RAMONC, RODRIGOM, FABRICIOJ, journalName=Energies, refType=null, unstructuredReference=RAMONC, RODRIGOM, FABRICIOJ. Automatic PRPD image recognition of multiple simultaneous partial discharge sour- ces in on-line hydro-generator stator bars[J]. Energies,2022,15:326., articleTitle=Automatic PRPD image recognition of multiple simultaneous partial discharge sour- ces in on-line hydro-generator stator bars, refAbstract=null), Reference(id=1217475421776560429, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2019, volume=null, issue=2, pageStart=9, pageEnd=13, url=null, language=null, rfNumber=[14], rfOrder=13, authorNames=张跃, 梁智明, 周进, journalName=大电机技术, refType=null, unstructuredReference=张跃,梁智明,周进,等.大型水轮发电机定子绕组端部电场分布仿真及试验研究[J].大电机技术,2019(2):9-13., articleTitle=大型水轮发电机定子绕组端部电场分布仿真及试验研究, refAbstract=null), Reference(id=1217475421856252207, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2021, volume=54, issue=1, pageStart=50, pageEnd=54, url=null, language=null, rfNumber=[15], rfOrder=14, authorNames=孙永鑫, 冯超, 祝晚华, journalName=绝缘材料, refType=null, unstructuredReference=孙永鑫,冯超,祝晚华.发电机绕组端部斜边电场的影响因素研究[J].绝缘材料,2021,54(1):50-54., articleTitle=发电机绕组端部斜边电场的影响因素研究, refAbstract=null), Reference(id=1217475421935943985, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2016, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[16], rfOrder=15, authorNames=全国旋转电机标准化技术委员会, journalName=null, refType=null, unstructuredReference=全国旋转电机标准化技术委员会.旋转电机 旋转电机定子绕组绝缘 第2部分:在线局部放电测量:GB/T 20833.2—2016[S].北京:中国标准出版社,2016., articleTitle=null, refAbstract=null), Reference(id=1217475422011441459, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2022, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[17], rfOrder=16, authorNames=LEVESQUEM, DUKSEOLY, CLAUDEH, journalName=null, refType=null, unstructuredReference=LEVESQUEM, DUKSEOLY, CLAUDEH, et al. Comparative study of phase resolved partial discharge patterns obtained with different instruments on individual stator bars and coils[C]//2022 Electrical Insulation Conference. Knoxville,USA:IEEE,2022., articleTitle=Comparative study of phase resolved partial discharge patterns obtained with different instruments on individual stator bars and coils, refAbstract=null), Reference(id=1217475422065967413, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, doi=null, pmid=null, pmcid=null, year=2023, volume=30, issue=1, pageStart=421, pageEnd=428, url=null, language=null, rfNumber=[18], rfOrder=17, authorNames=LINGYANL, AILIANGK, ZHIPENGL, journalName=IEEE Transactions on Dielectrics and Electrical Insulation, refType=null, unstructuredReference=LINGYANL, AILIANGK, ZHIPENGL, et al. Development and discharge characteristics of surface tracking on the interface between the PD suppression coatings outside of stator winding slots[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2023,30(1):421-428., articleTitle=Development and discharge characteristics of surface tracking on the interface between the PD suppression coatings outside of stator winding slots, refAbstract=null)], funds=[Fund(id=1217475420669264145, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, awardId=HNKJ22-HF95, language=CN, fundingSource=中国华能集团科技项目(HNKJ22-HF95), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1217475411383075777, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=1, ext=[AuthorCompanyExt(id=1217475411391464385, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China), AuthorCompanyExt(id=1217475411395658690, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411383075777, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000)]), AuthorCompany(id=1217475411487933384, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=2, ext=[AuthorCompanyExt(id=1217475411496321994, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411487933384, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2Jinghong Hydropower Station, Huaneng Lancang River Hydropower Inc., Jinghong 666100, China), AuthorCompanyExt(id=1217475411500516299, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411487933384, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2华能澜沧江水电股份有限公司景洪水电厂,云南 景洪 666100)]), AuthorCompany(id=1217475411609568210, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, xref=3, ext=[AuthorCompanyExt(id=1217475411613762516, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411609568210, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3National Engineering Research Center Hydropower Equipment, Harbin 150040, China), AuthorCompanyExt(id=1217475411622151125, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, companyId=1217475411609568210, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3哈动国家水力发电设备工程技术研究中心有限公司,黑龙江 哈尔滨 150040)])], figs=[ArticleFig(id=1217475416185553043, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.1, caption=Structure diagram of the interlayer gap discharge area, figureFileSmall=pRxNf9YFlLB5kABDQbH6Og==, figureFileBig=sPKtWpYtySQzykbzJwQnzg==, tableContent=null), ArticleFig(id=1217475416244273303, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图1, caption=层间间隙放电区域结构图, figureFileSmall=pRxNf9YFlLB5kABDQbH6Og==, figureFileBig=sPKtWpYtySQzykbzJwQnzg==, tableContent=null), ArticleFig(id=1217475416328159391, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.2, caption=Surface corrosion diagram of the interlayer gap discharge, figureFileSmall=AoNzn7Z3wmZ1/vm0O3puhA==, figureFileBig=KHptOc0Fu6+YutvPmULHJg==, tableContent=null), ArticleFig(id=1217475416420434085, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图2, caption=层间间隙放电表面腐蚀图, figureFileSmall=AoNzn7Z3wmZ1/vm0O3puhA==, figureFileBig=KHptOc0Fu6+YutvPmULHJg==, tableContent=null), ArticleFig(id=1217475416525291691, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.3, caption=Simulation test wiring diagram, figureFileSmall=ngMsNhkDP9f8y4nkDAK5BQ==, figureFileBig=++GfTG4ENVaNHD243d3fLw==, tableContent=null), ArticleFig(id=1217475416596594862, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图3, caption=模拟试验接线图, figureFileSmall=ngMsNhkDP9f8y4nkDAK5BQ==, figureFileBig=++GfTG4ENVaNHD243d3fLw==, tableContent=null), ArticleFig(id=1217475416709841073, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.4, caption=Simulated interlayer gap discharge for UV imaging, figureFileSmall=chOHGYy6mPmSRK++wmeOew==, figureFileBig=sRQoo4lP8QzT0jUnhxGhBQ==, tableContent=null), ArticleFig(id=1217475416835670200, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图4, caption=模拟层间间隙放电紫外成像, figureFileSmall=chOHGYy6mPmSRK++wmeOew==, figureFileBig=sRQoo4lP8QzT0jUnhxGhBQ==, tableContent=null), ArticleFig(id=1217475416969887932, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.5, caption=PRPD spectra of the simulated interlayer gap discharge, figureFileSmall=S+becdeorWIQp8PyEs6R+Q==, figureFileBig=8zxArbiJFfS5Rg/USwmYlg==, tableContent=null), ArticleFig(id=1217475417078939841, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图5, caption=模拟层间间隙放电的PRPD图谱, figureFileSmall=S+becdeorWIQp8PyEs6R+Q==, figureFileBig=8zxArbiJFfS5Rg/USwmYlg==, tableContent=null), ArticleFig(id=1217475417158631619, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.6, caption=Schematic of stator winding offline test, figureFileSmall=xpxj8NlYmNqNnN0vctDFYg==, figureFileBig=S4eCjgQLefqeesMziOG4rw==, tableContent=null), ArticleFig(id=1217475417246712008, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图6, caption=定子绕组离线试验原理图, figureFileSmall=xpxj8NlYmNqNnN0vctDFYg==, figureFileBig=S4eCjgQLefqeesMziOG4rw==, tableContent=null), ArticleFig(id=1217475417406095565, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.7, caption=Offline partial discharge PRPD spectra, figureFileSmall=2vYORSKr/CM4pK9D2tM5nQ==, figureFileBig=vnYYuHLnQKmGIgIAEo1WMA==, tableContent=null), ArticleFig(id=1217475417519341776, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图7, caption=离线局部放电PRPD图谱, figureFileSmall=2vYORSKr/CM4pK9D2tM5nQ==, figureFileBig=vnYYuHLnQKmGIgIAEo1WMA==, tableContent=null), ArticleFig(id=1217475417745834196, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.8, caption=Test wiring diagram, figureFileSmall=lWAZsY+z37KX8GducGQ+sQ==, figureFileBig=WOoGqMEs6tt13BHUqPlj5g==, tableContent=null), ArticleFig(id=1217475417821331672, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图8, caption=试验接线图, figureFileSmall=lWAZsY+z37KX8GducGQ+sQ==, figureFileBig=WOoGqMEs6tt13BHUqPlj5g==, tableContent=null), ArticleFig(id=1217475417909412059, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.9, caption=Online partial discharge PRPD spectra, figureFileSmall=hoT9qDBNAmqkIAzb/dek3A==, figureFileBig=LhZnePtMzf2xj/Ft8PZCdw==, tableContent=null), ArticleFig(id=1217475418039435487, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图9, caption=在线局部放电PRPD图谱, figureFileSmall=hoT9qDBNAmqkIAzb/dek3A==, figureFileBig=LhZnePtMzf2xj/Ft8PZCdw==, tableContent=null), ArticleFig(id=1217475419339669731, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.10, caption=Diagram of winding, lead ring arrangement, and interlayer discharge points, figureFileSmall=CEN4+H4ypJ4kpTQDK5ffyQ==, figureFileBig=zscWAjOrKgmR69gfi1+CvA==, tableContent=null), ArticleFig(id=1217475419423555815, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图10, caption=绕组、汇流环布置及层间放电点示意图, figureFileSmall=CEN4+H4ypJ4kpTQDK5ffyQ==, figureFileBig=zscWAjOrKgmR69gfi1+CvA==, tableContent=null), ArticleFig(id=1217475419536802028, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig.11, caption=Test wiring diagram, figureFileSmall=Iorabhu/aKP3f+eaO5xVFg==, figureFileBig=gJurtMLN98Miv7Cvp5m94A==, tableContent=null), ArticleFig(id=1217475419629076718, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图11, caption=试验接线图, figureFileSmall=Iorabhu/aKP3f+eaO5xVFg==, figureFileBig=gJurtMLN98Miv7Cvp5m94A==, tableContent=null), ArticleFig(id=1217475419721351411, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Fig. 12, caption=Detection results of different distance sensors for the same fault, figureFileSmall=tCC6EIamJeit7rl4EYFjzQ==, figureFileBig=tqEghRZVSkh6Roo+05DUsA==, tableContent=null), ArticleFig(id=1217475419801043193, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=图12, caption=同一故障不同距离传感器的检测结果, figureFileSmall=tCC6EIamJeit7rl4EYFjzQ==, figureFileBig=tqEghRZVSkh6Roo+05DUsA==, tableContent=null), ArticleFig(id=1217475419880734967, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Tab.1, caption=Statistics of voltage and interphase gap discharge points, figureFileSmall=null, figureFileBig=null, tableContent=
序号槽号槽内线棒支路支路中位置电压差/kV是否放电
1210U1/W12/120—3/12017.6是
2390U2/W22/120—3/12017.6是
3570U3/W32/120—3/12017.6是
430U4/W42/120—3/12017.6是
5324V1/U22/120—85/12012.0否
6504V2/U32/120—85/12012.0否
7684V3/U42/120—85/12012.0否
8144V4/U12/120—85/12012.0否
9228W1/U21/120—20/12016.5是
10408W2/U31/120—20/12016.5是
11588W3/U41/120—20/12016.5是
1248W4/U11/120—20/12016.5是
), ArticleFig(id=1217475419968815355, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=表1, caption=

电压及相间间隙放电点统计

, figureFileSmall=null, figureFileBig=null, tableContent=
序号槽号槽内线棒支路支路中位置电压差/kV是否放电
1210U1/W12/120—3/12017.6是
2390U2/W22/120—3/12017.6是
3570U3/W32/120—3/12017.6是
430U4/W42/120—3/12017.6是
5324V1/U22/120—85/12012.0否
6504V2/U32/120—85/12012.0否
7684V3/U42/120—85/12012.0否
8144V4/U12/120—85/12012.0否
9228W1/U21/120—20/12016.5是
10408W2/U31/120—20/12016.5是
11588W3/U41/120—20/12016.5是
1248W4/U11/120—20/12016.5是
), ArticleFig(id=1217475420069478654, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Tab.2, caption=Statistical results of electrical distance between discharge point and partial discharge detection sensor, figureFileSmall=null, figureFileBig=null, tableContent=
槽号2103905703022840858848
支路号U1W1U2W2U3W3U4W4W1U2W2U3W3U4W4U1
电气距离/m15.722.629.936.924.924.010.69.816.685.230.880.117.865.93.671.0
), ArticleFig(id=1217475420174336258, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=表2, caption=

放电点距局放检测传感器电气距离统计结果

, figureFileSmall=null, figureFileBig=null, tableContent=
槽号2103905703022840858848
支路号U1W1U2W2U3W3U4W4W1U2W2U3W3U4W4U1
电气距离/m15.722.629.936.924.924.010.69.816.685.230.880.117.865.93.671.0
), ArticleFig(id=1217475420266610950, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Tab.3, caption=Statistic results of discharge amplitude and pulse number in simulation experiment, figureFileSmall=null, figureFileBig=null, tableContent=
项目S1-C1S2-C1S1-S2传播衰减
与故障点距离/m29—
+Qm/mV913265%
-Qm/mV862373%
+Qn1976865%
-Qn1704474%
), ArticleFig(id=1217475420354691335, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=表3, caption=

模拟试验放电幅值及脉冲数量统计结果

, figureFileSmall=null, figureFileBig=null, tableContent=
项目S1-C1S2-C1S1-S2传播衰减
与故障点距离/m29—
+Qm/mV913265%
-Qm/mV862373%
+Qn1976865%
-Qn1704474%
), ArticleFig(id=1217475420438577418, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=EN, label=Tab.4, caption=Statistic results of discharge amplitude of winding test, figureFileSmall=null, figureFileBig=null, tableContent=
槽号支路距离/m传感器离线试验在线试验
A相B相C相A相B相C相
30U410.6机端A30%M——30%M——
W49.8机端C——38%M——38%M
144V412.1机端B—15%M——15%M—
U1270.5机端A＜10%M——＜10%M——
48W43.6机端C——M——M
U171机端A＜10%M——＜10%M——
), ArticleFig(id=1217475420514074893, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209867859002528400, language=CN, label=表4, caption=

绕组试验放电幅值统计结果

, figureFileSmall=null, figureFileBig=null, tableContent=
槽号支路距离/m传感器离线试验在线试验
A相B相C相A相B相C相
30U410.6机端A30%M——30%M——
W49.8机端C——38%M——38%M
144V412.1机端B—15%M——15%M—
U1270.5机端A＜10%M——＜10%M——
48W43.6机端C——M——M
U171机端A＜10%M——＜10%M——
)], attaches=null, journal=Journal(id=1146437660891000859, delFlag=0, nameCn=绝缘材料, nameEn=Insulating Materials, nameHistory1=null, nameHistory2=null, issn=1009-9239, eissn=null, cn=45-1287/TM, coden=null, periodic=0, language=CN, oaType=是, ccby=CC BY-NC-ND, superviseOffice=null, ownerOffice=null, pubOffice=null, editorOffice=null, officeType=null, aims=null, clcCode=null, officeProv=null, officeCity=null, officeAddr=null, officeZip=null, officeEmail=null, officePhone=null, editDirector=null, officeDirector=null, officeDirectorPhone=null, officeStaffNum=null, officeEmpNum=null, coverPicUrl=To3JhdgsOj1Q7eh5WnUN1g==, journalPrice=null, startedYear=null, abbrevIsoEn=null, journalRemark=null, publicationField=null, createdTime=1751261638140, updatedTime=1761735740591, createdBy=18614031015, updatedBy=13701087609, firstLetterCn=I, firstLetterEn=I, subjectCode=Natural Sciences, subjectName=Natural Sciences, subjectCodeEn=Natural Sciences, subjectNameEn=null, picCn=To3JhdgsOj1Q7eh5WnUN1g==, picEn=O7zoVkJ9hJoi8iGUSQYTxg==, jcr=null, cjcr=null, exts=[JournalExt(id=1190369230903152828, language=CN, name=绝缘材料, nameHistory1=null, nameHistory2=null, managedBy=, sponsoredBy=, publishedBy=, editorOffice=, officeProv=null, officeCity=null, officeAddr=, officeZip=, editDirector=, officeDirector=null, officePhone=null, coverPicUrl=null, journalRemark=, submitArticleUrl=null, websiteUrl=, createdTime=1761735740638, updatedTime=1761735740638, createdBy=13701087609, updatedBy=13701087609, submissionGuidelinesUrl=, submissionAuthorUrl=https://jyct.cbpt.cnki.net/EditorDN/index.aspx?t=1, submissionEditorUrl=https://jyct.cbpt.cnki.net/EditorDN/index.aspx?t=3, submissionReviewUrl=https://jyct.cbpt.cnki.net/EditorDN/index.aspx?t=2, submissionCeEditorUrl=, submissionAeEditorUrl=, option={"copyright":""}), JournalExt(id=1190369230945095869, language=EN, name=Insulating Materials, nameHistory1=null, nameHistory2=null, managedBy=, sponsoredBy=, publishedBy=, editorOffice=, officeProv=null, officeCity=null, officeAddr=, officeZip=, editDirector=, officeDirector=null, officePhone=null, coverPicUrl=null, journalRemark=, submitArticleUrl=null, websiteUrl=, createdTime=1761735740648, updatedTime=1761735740648, createdBy=13701087609, updatedBy=13701087609, submissionGuidelinesUrl=, submissionAuthorUrl=https://jyct.cbpt.cnki.net/EditorDN/index.aspx?t=1, submissionEditorUrl=https://jyct.cbpt.cnki.net/EditorDN/index.aspx?t=3, submissionReviewUrl=https://jyct.cbpt.cnki.net/EditorDN/index.aspx?t=2, submissionCeEditorUrl=, submissionAeEditorUrl=, option={"copyright":""})], databaseList=null, tenantJournalId=1149653034449285133, websiteList=[Website(id=1189939819993166814, webName=null, webTitle=null, webDomain=null, webCopyrigh=null, webIpcNo=null, seoTitle=null, seoKeywords=null, seoDescription=null, tenantJournalId=null, journalId=1149653034449285133, journalNameCn=null, journalNameEn=null, grayFlag=null, tenantId=1146029695717560320, platformId=null, journalGroupId=null, journalGroupNameCn=null, journalGroupNameEn=null, type=1, domain=https://castjournals.cast.org.cn/joweb/jycl/CN, language=CN, createTime=1761633361099, createBy=18614031015, updateTime=1761633401425, updateBy=18614031015, name=绝缘材料-中文, tplId=1146099689490845704, title=绝缘材料, delFlag=0, indexPage=/home, props=[WebsiteProps(id=1189940292275991527, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=articleTextType, value=kx, createTime=1761633473700, updateTime=1761633473700, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292250825700, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=banner, value=null, createTime=1761633473694, updateTime=1761633473694, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292301157354, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=grayFlag, value=0, createTime=1761633473706, updateTime=1761633473706, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292238242787, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=logo, value=https://castjournals.cast.org.cn/joweb/jycl/CN/file/pic?fileId=MyqZAHzZT6tMetr2hjDKLQ==, createTime=1761633473691, updateTime=1761633473691, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292322128876, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=minRunFlag, value=0, createTime=1761633473711, updateTime=1761633473711, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292267602918, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=picServerUrl, value=https://castjournals.cast.org.cn/joweb/jycl/CN/file/pic, createTime=1761633473698, updateTime=1761633473698, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292309545963, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=silenceFlag, value=0, createTime=1761633473708, updateTime=1761633473708, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292259214309, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=staticResourcePath, value=https://castjournals.cast.org.cn/joweb/cast_kjdb_cn_619/, createTime=1761633473696, updateTime=1761633473696, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292284380136, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=themeColor, value=null, createTime=1761633473702, updateTime=1761633473702, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940292292768745, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939819993166814, code=themeStyle, value=null, createTime=1761633473704, updateTime=1761633473704, creator=18614031015, updator=18614031015)]), Website(id=1189939820060275680, webName=null, webTitle=null, webDomain=null, webCopyrigh=null, webIpcNo=null, seoTitle=null, seoKeywords=null, seoDescription=null, tenantJournalId=null, journalId=1149653034449285133, journalNameCn=null, journalNameEn=null, grayFlag=null, tenantId=1146029695717560320, platformId=null, journalGroupId=null, journalGroupNameCn=null, journalGroupNameEn=null, type=1, domain=https://castjournals.cast.org.cn/joweb/jycl/EN, language=EN, createTime=1761633361115, createBy=18614031015, updateTime=1761633397117, updateBy=18614031015, name=绝缘材料-英文, tplId=1146101810881728533, title=Insulating Materials, delFlag=0, indexPage=/home, props=[WebsiteProps(id=1189940323548722161, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=articleTextType, value=kx, createTime=1761633481156, updateTime=1761633481156, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323519362030, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=banner, value=null, createTime=1761633481149, updateTime=1761633481149, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323569693684, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=grayFlag, value=0, createTime=1761633481161, updateTime=1761633481161, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323506779117, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=logo, value=https://castjournals.cast.org.cn/joweb/jycl/EN/file/pic?fileId=MyqZAHzZT6tMetr2hjDKLQ==, createTime=1761633481146, updateTime=1761633481146, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323586470902, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=minRunFlag, value=0, createTime=1761633481165, updateTime=1761633481165, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323540333552, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=picServerUrl, value=https://castjournals.cast.org.cn/joweb/jycl/EN/file/pic, createTime=1761633481154, updateTime=1761633481154, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323578082293, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=silenceFlag, value=0, createTime=1761633481163, updateTime=1761633481163, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323531944943, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=staticResourcePath, value=https://castjournals.cast.org.cn/joweb/cast_kjdb_en_623/, createTime=1761633481152, updateTime=1761633481152, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323557110770, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=themeColor, value=null, createTime=1761633481158, updateTime=1761633481158, creator=18614031015, updator=18614031015), WebsiteProps(id=1189940323565499379, tenantId=1146029695717560320, journalId=null, journalGroupId=null, siteId=1189939820060275680, code=themeStyle, value=null, createTime=1761633481160, updateTime=1761633481160, creator=18614031015, updator=18614031015)])], journalTitle=绝缘材料, weixinUrl=null, journalUrl=https://www.insulation.org.cn/, iacademicId=null, status=1, seqNo=null, journalTitleEn=Insulating Materials, journalPhotoCn=To3JhdgsOj1Q7eh5WnUN1g==, journalPhotoEn=O7zoVkJ9hJoi8iGUSQYTxg==, journalFirstLetter=I, journalRecommend=null, journalNew=null, journalCollection=null, jcrJf=null, cjcrJf=null, jcrJfStr=null, cjcrJfStr=null, submissionFirstDecision=null, sciSubjectClassification=null, casSubjectClassification=null, citeScore=null, totalCitationFrequency=null, icpCode=null, psCode=null, advertisingLicenseCode=null, copyrightInformation=null, country=null, option=, provinceCode=null, provinceName=null, collectFlag=false), detailUrlCn=https://castjournals.cast.org.cn/joweb/jycl/CN/10.16790/j.cnki.1009-9239.im.2024.01.014, detailUrlEn=https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2024.01.014, pdfUrlCn=https://castjournals.cast.org.cn/joweb/jycl/CN/PDF/10.16790/j.cnki.1009-9239.im.2024.01.014, pdfUrlEn=https://castjournals.cast.org.cn/joweb/jycl/EN/PDF/10.16790/j.cnki.1009-9239.im.2024.01.014, aliStartDate=null, aliEndDate=null, collectionFlag=false, citedCount=null, citedUrl=null, reference=null)
收藏切换
基于局部放电的水轮发电机定子绕组层间间隙放电的检测与分析
收藏切换
PDF下载
杨增杰 1 , 赵显峰 1 , 张学明 1 , 李坚 1 , 刘剑明 2 , 孙永鑫 3
绝缘材料 | 测试与分析 2024,57(1): 94-100
收起
收藏切换
绝缘材料 | 测试与分析 2024, 57(1): 94-100
基于局部放电的水轮发电机定子绕组层间间隙放电的检测与分析
全屏
杨增杰1, 赵显峰1, 张学明1, 李坚1, 刘剑明2, 孙永鑫3
作者信息
  • 1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000
  • 2华能澜沧江水电股份有限公司景洪水电厂,云南 景洪 666100
  • 3哈动国家水力发电设备工程技术研究中心有限公司,黑龙江 哈尔滨 150040

    • 杨增杰（1982-），男（汉族），云南宣威人，高级工程师，研究方向为大型水轮发电机的状态评估。

Detection and analysis of interlayer gap discharge in hydrogenerator stator winding based on partial discharge
Zengjie YANG1, Xianfeng ZHAO1, Xueming ZHANG1, Jian LI1, Jianming LIU2, Yongxin SUN3
Affiliations
  • 1Maintenance Branch, Huaneng Lancang River Hydropower Inc., Kunming 650000, China
  • 2Jinghong Hydropower Station, Huaneng Lancang River Hydropower Inc., Jinghong 666100, China
  • 3National Engineering Research Center Hydropower Equipment, Harbin 150040, China
出版时间: 2024-01-20 doi: 10.16790/j.cnki.1009-9239.im.2024.01.014
文章导航
收藏切换
摘要
收起

为提高绕组层间间隙放电故障诊断的可靠性，以水轮发电机定子绕组为试验对象，研究了通过局部放电诊断层间间隙放电时的影响因素。首先通过离线试验、在线试验、模拟试验方法获取绕组多放电源叠加时的层间间隙放电局放特征，然后通过线棒模拟电气传导衰减，结合发电机绕组结构、检测距离，分析检测距离对检测结果的影响。结果表明：绕组层间的间隙放电有独立特征，在其PRPD模式图中脉冲分布呈悬浮状且具有对称的正负极性，脉冲峰值位于45°和225°前后，两相中一相的正负极性脉冲峰值同时向右偏离45°和225°，另一相的正负极性脉冲峰值同时向左偏离45°和225°；当绕组结构不同时，放电间隙分布和汇流环长度也不同，由此造成的检测距离差异对局部放电信号幅值检测结果有较大影响，如果只考虑电气传导，检测距离每增大1 m，局部放电幅值平均衰减约10%，当只有距离较近的一相能检测到间隙放电时相间分析方法失效；即使绕组中同时存在多个放电源和间隙放电也可以通过间隙放电PRPD模式图的悬浮特征识别层间间隙放电；检测量程对局部放电模式识别有影响，当大量程全局图谱完整但局部模式相互重叠时无法识别具体故障，当小量程全局图谱不完整但局部模式图清晰时可识别具体故障。

水轮发电机  /  层间间隙放电  /  PRPD  /  传播衰减  /  绕组结构  /  悬浮特征

In order to improve the reliability of interlayer gap discharge faults diagnosis in winding, taking a hydrogenerator stator winding as the experimental object, the influencing factors of diagnosing interlayer gap discharge through partial discharge were studied. Firstly, the characteristics of interlayer gap discharge in winding under the superposition of multiple discharge sources were obtained through offline test, online test, and simulation test. Then, by simulating the electrical conduction attenuation of bar and combined with the generator winding structure and detection distance, the effect of detection distance on the detection results was analyzed. The results show that the winding interlayer gap discharge has independent characteristics, the pulse distribution is suspended in PRPD pattern and has symmetrical positive and negative polarities. The pulse peak values are located around 45° and 225°. In one phase, the positive and negative polarity pulse peak values simultaneously deviate to the right of 45° and 225°, while in the other phase, the positive and negative polarity pulse peak values simultaneously deviate to the left of 45° and 225°. When the winding structure is different, the distribution of discharge gaps and the length of lead ring are also different, resulting in significant differences in detection distance, which has great effect on the amplitude detection results of partial discharge signals. If only electrical conduction is considered, for every one meter increase in detection distance, the average attenuation of partial discharge amplitude is approximately 10%. When only one closer phase can detect gap discharge, the interphase analysis method fails. Even there are multiple discharge sources and gap discharge simultaneously in winding, the interlayer gap discharge can be identified through the suspended characteristics of gap discharge PRPD pattern. The detection range has an impact on the identification of partial discharge patterns. When the global spectra with large range is complete, while the local patterns overlap with each other, the specific faults cannot be identified. When the global spectra with small range is incomplete, while the local patterns are clear, the specific faults can be identified.

hydrogenerator  /  interlayer gap discharge  /  PRPD  /  propagation attenuation  /  winding structure  /  suspension characteristics
杨增杰, 赵显峰, 张学明, 李坚, 刘剑明, 孙永鑫. 基于局部放电的水轮发电机定子绕组层间间隙放电的检测与分析. 绝缘材料, 2024 , 57 (1) : 94 -100 . DOI: 10.16790/j.cnki.1009-9239.im.2024.01.014
Zengjie YANG, Xianfeng ZHAO, Xueming ZHANG, Jian LI, Jianming LIU, Yongxin SUN. Detection and analysis of interlayer gap discharge in hydrogenerator stator winding based on partial discharge[J]. Insulating Materials, 2024 , 57 (1) : 94 -100 . DOI: 10.16790/j.cnki.1009-9239.im.2024.01.014
正文
收起
0 引言
收起
发电机定子绕组通过电磁感应进行能量交换，工作中需承受不断变化的机械力、电场力、热力作用，使得其绝缘性能缓慢劣化[1-2]。绕组层间间隙放电会随着时间发展不断腐蚀线棒表面的防护层、防晕层和主绝缘，最终导致绝缘失效，严重时甚至会引发发电机定子绝缘电气事故[3-4]，因此有必要对其进行跟踪监测，在其发展成故障前进行预防性维修[5]。绝缘表面局部放电伴随有紫外光、噪声、臭氧、局部发热、电磁脉冲信号等特征，为了监测绝缘表面绝缘状态的变化，研究者们从不同特征维度开展了研究和实践。马咸等[6]通过紫外成像检测实现了端部电晕处理效果的定量评估。杨增杰等[7]将紫外成像技术应用于发电机电晕检测中，结果发现当检测灵敏度较高时，紫外成像技术能发现目视检查不能发现的缺陷，不足之处在于使用其对下层线棒等被遮挡部位检测时存在盲区。胡胜等[8]基于噪声频段提取法通过超声波传感器检测分析运行中水轮发电机定子绕组的局部放电缺陷，发现可以检测出放电异常，但由于超声波传感器的灵敏度低、频带窄且安装布置要求高，该方法在发电机中应用较少。满宇光等[4]介绍了通过仿真计算、损耗温度测量验证防晕结构合理性和材料稳定性的方法，但该方法在发电机运行中因检测条件限制而很少应用。S H LEE等[9]提出采用臭氧浓度监测发电机定子线棒槽部、端部的局部放电，并通过臭氧浓度定量分析绝缘故障的发展，该方法测量简单、抗电磁干扰，但只对绝缘表面放电有效，不能区分故障类型，只能反映整体的劣化程度。上述研究均是间接测量方法，不能测量出局部放电量，目前水轮发电机绝缘在线监测应用较多的仍然是利用脉冲电流法对高频、特高频绝缘局部放电进行在线监测[10]，通过PRPD（phase resolved partial discharge）模式图识别故障，通过放电量监测故障趋势并预警[11-12]。在实际应用中，由于发电机绕组结构不同、局部放电信号传播衰减、故障重叠交叉干扰等[13]内外部因素影响，通过PRPD模式图识别故障的难度较大。
近年来，随着发电机容量和额定电压的提高，投运发电机出现了较多的端部绕组线棒间隙放电故障。端部绕组间隙有同层线棒斜边间隙、层间线棒槽口处间隙、线棒与压指之间间隙以及线棒和端箍之间间隙，其中层间线棒槽口处间隙处于防晕功能区，其间隙小、放电风险高、隐蔽性强。本研究以服役10年，目视检查存在层间间隙放电的18 kV/350 MW水轮发电机为例，通过线棒模拟故障重叠的层间间隙放电试验、离线绕组外施电压故障重叠的层间间隙放电试验、在线故障重叠外部干扰状态的层间间隙放电试验，结合绕组结构传播衰减，探索层间间隙放电模式识别的内外部影响因素。
1 定子绕组层间间隙放电位置及特征
收起
1.1 层间间隙放电位置
水轮发电机定子绕组一般采用双层波绕组或叠绕组，绕组结构中存在一定数量的同槽异相线棒，在相间电压较高的同槽异相线棒出槽口区域存在上下层线棒间电场较高的空气间隙[14-15]。图1为同槽异相线棒处的层间间隙结构图，其中U为导体间电压差，D为两导体距离，u为两线棒绝缘表面电压差，d为空气间隙。由图1可知，在防晕涂层、绝缘距离共同作用下图中红色区域场强较高，容易产生间隙放电。
此外，由于线棒制造尺寸公差、安装环节工艺偏差导致该部位空气绝缘距离小于设计值，叠加海拔升高空气密度降低等因素，在长期运行电压作用下，定子绕组中会出现规律分布的层间间隙放电腐蚀，如图2所示。
1.2 间隙放电局部放电特征
层间间隙放电在GB/T 20833.2—2016中归类为绕组端部表面相间放电[16]。相位辨识局部放电模式用于发现定子绕组绝缘结构中的相间局部放电缺陷，有典型PRPD模式和相间相位特征。脉冲分布形状为悬浮云图，负脉冲分布在0°～90°，正脉冲分布在180°～270°，极性相反，相间分析发现一相局部放电倾向左移，另一相局部放电倾向右移。
2 水轮发电机定子绕组层间间隙放电检测试验
收起
通过离线、在线、模拟试验，获取定子绕组几种绝缘故障叠加状态下同槽异相线棒层间间隙放电的局部放电特征，分析特征差异及影响因素。为确保检测参数一致，避免参数差异导致检测结果出现偏差[17]，局部放电检测设备的型号及测试参数与在线监测设备保持一致。试验采用IRIS TGA-B型局部放电测试仪以及配套80 pF耦合电容，频带为40～350 MHz，采用定向分离技术分离发电机和试验设备的局放信号。
2.1 模拟同槽异相线棒层间间隙放电检测试验
从18 kV水轮发电机中抽取1根运行10年，存在防晕腐蚀的线棒S1和1根无故障备用线棒S2，将线棒固定在试验槽盒内，模拟发电机同槽异相线棒的层间间隙，防晕腐蚀故障位于图3中黄色区域，层间间隙故障位于图3中红色区域。分别在两根线棒上施加A、C相序50 Hz工频电压，逐步升高线棒S1的A相电压至10 kV，升高线棒S2的C相电压至8 kV，间隙部位相间电压差Uac为15.62 kV，通过紫外成像仪确认间隙部位发生间隙放电（如图4所示）。图4展示了局部放电发生时紫外成像的放电特征，图中矩形计数框内红色像素点即为放电的紫外光成像，读取得到代表放电强弱的光子数为980个。在线棒S1、S2端部分别通过两组80 pF耦合电容S1-C1、S1-C2和S2-C1、S2-C2检测局部放电脉冲信号，试验接线如图3所示。
局部放电图谱如图5所示，其中图5(a)、(b)、(c)为备用线棒的S2-C1传感器在8 kV电压下检测的不同量程、不同相位的PRPD模式图，图5(d)、(e)为故障线棒的S1-C1传感器在10 kV电压下检测的不同量程的PRPD模式图，pps表示每秒脉冲数。分析图5可知：
（1）图5(c)、(e)中红色椭圆标识为明显的间隙放电特征，悬浮、正负极性对称，图5(d)中正负极性脉冲峰值均同时向右偏离45°和225°，施加C相电压的图5(a)正负极性脉冲峰值均同时向左偏离45°和225°，与标准相间放电PRPD图的主要特征一致。
（2）基于层间间隙放电在两相间同时发生，开展层间放电分析如图5(b)、(d)所示，时间起点相同，相位相差240°，施加A相电压的图5(d)和施加C相电压的图5(b)在相近时间点存在极性相反，幅值相近的放电特征。
（3）在同一放电源量程为340 mV时，图谱完整但显示不出悬浮的特征，也显示不出其他次要故障特征，如图5(a)、(b)、(d)所示。量程为170 mV时，图谱能清晰显示主要的层间间隙放电故障悬浮特征和次要绝缘故障特征，如图5(c)、(e)中红色椭圆标记和黄色椭圆标记，但主要的间隙故障放电幅值超出量程，图谱显示不完整。不同的量程下图谱的分辨率不同，对故障识别有影响。在线监测中应设置多个检测量程，自动获取不同量程数据，以便识别幅值差异的不同故障源。
2.2 定子绕组离线局部放电试验
离线试验的优点是可以通过控制电压激活或熄灭放电源，与系统脱离，无外部干扰；绕组中试验电压分布一致，可激活更多放电源。为进一步确认离线状态绕组中同槽异相线棒层间间隙放电的局部放电特征，开展了绕组离线试验，试验接线如图6所示，试验在额定相电压10.4 kV和额定线电压18 kV两个阶段逐相开展。
图7为C相绕组离线在外施工频交流电压下C1传感器检测到的局部放电PRPD图谱，其中图7(a)电压为10.4 kV，量程为85 mV；图7(b)电压为10.4 kV，量程为170 mV；图7(c)电压为18 kV，量程为85 mV；图7(d)为电压18 kV，量程为170 mV。
从图7(a)、(b)可以看出，电压为10.4 kV时C相无明显间隙放电特征，主要特征为电晕故障特征。随着电压升高至18 kV，C相的间隙放电被激活，如图7(d)红色椭圆框所示，在45°和225°相位附近出现明显的间隙放电悬浮特征，且正负极性对称。图7(c)中量程为85 mV时间隙放电特征不明显，而图7(d)中量程为170 mV时间隙放电特征明显，间隙正极性放电幅值约为170 mV，负极性放电幅值约为150 mV，说明量程太小时对特定故障特征图谱展示有影响。
试验还发现，离线局部放电测试结果与绕组结构有关，A、B相的试验结果与C相存在差异，A、B相的离线试验均未检测到明显的层间间隙放电特征。
2.3 定子绕组在线局部放电试验
在线试验的优点是测试时绕组在工作状态下，检测到的绝缘局部放电即为导致绝缘长期劣化的放电，跟踪监测其发展对评估绝缘劣化进程较为有效。但受运行工况变化和系统干扰的影响，其多源局部放电相互叠加，全局PRPD模式图更为复杂。为进一步确认在运行电压下，同槽异相线棒层间间隙放电的局部放电特征，开展在线局部放电试验，试验接线如图8所示。发电机空载状态开展测试，机端电压为18 kV。
图9为定子绕组在线局部放电的PRPD图谱。其中图9(a)为A相C1传感器在检测量程为170 mV时检测到的模式图，图9(c)为C相C1传感器在检测量程为170 mV时检测到的模式图，图9(b)、(d)是AC相间分析图。
从图9(a)可以看出，在运行电压下A相绕组中无明显间隙放电特征，但依然存在其他多个放电源如黄色椭圆框和蓝色椭圆框所示。
从图9(c)可以看出，运行电压下发电机的C相绕组存在明显的间隙放电，如图中红色矩形框所示，分层悬浮，正负极对称。除间隙放电外图谱中存在多个放电源，包括槽放电[18]、防晕层放电、金属导体尖端放电，如黄色椭圆框所示。
根据图9(b)、(d)开展层间放电分析发现，当时间起点相同，相位相差240°时，针对相同的放电故障同时在AC两相测量，其中一相存在明显的故障特征（如图9(d)红色框区域），为C相间隙放电；另一相无特征，如图9(b)所示，无明确的悬浮、极性相反的间隙放电特征。此外，从图9(c)、9(d)还可以看出，全局图谱中间隙正负极性放电幅值均约为100 mV。
在线试验与离线试验的相同点是检测距离相同，不同点是每相绕组中存在的多个相间间隙的电压均不相同，多数层间间隙在线试验电压相较离线试验电压低，因此实际发生的间隙放电数量、强度较离线试验弱，这与离线试验时C相层间间隙的放电幅值约为170 mV，而在线试验时仅约为100 mV相一致。可通过离线试验调整试验电压激活或熄灭放电源，在相同灵敏度下提高检测范围，提前发现间隙放电问题。
3 绕组结构及检测距离影响分析
收起
绕组中开展的离线试验、在线试验和线棒模拟间隙放电试验检测图谱存在差异：①与模拟试验不同的是绕组试验中没有在放电对应的两相中同时检测到间隙放电图谱特征；②离线试验和在线试验的局部放电幅值存在差异。考虑绕组结构导致的检测距离差异，进一步开展绕组结构、局部放电信号传播衰减模拟试验分析。
3.1 绕组结构分析
试验发电机为720槽3相4支路双层波绕、整距、集中布置绕组，上下层间间隙d=4.37 mm、D=12.37 mm，12个支路高压端引线沿圆周分布，经汇流铜环引出至发电机端母线，绕组及汇流环布置如图10所示，绕组结构不同，则每支路汇流环的长度不同。绕组中同槽异相线棒层间间隙位置如图10中闪电符号所示，相间电压由相邻两绕组具体线棒的电压和相位决定。
表1统计了全部支路层间间隙电压最高的12个同槽异相线棒的槽号、支路号、间隙在支路中位置、间隙处相间电压差以及目视检查间隙放电情况。从表1可知，电压最高、次高的8个层间间隙均在A、C相支路中，相间电压分别为17.6 kV、16.5 kV，第三高的4个层间间隙在A、B相支路中，间隙处相间电压为12.0 kV。检修中，目视检查确认电压最高和次高的8个层间均存在如图2所示的间隙放电腐蚀，其余电压为12.0 kV的A、B相支路中层间间隙以及电压更低的其他层间间隙均未发现放电腐蚀。
8个放电的层间间隙距离发电机端的电气距离如表2所示。从表2可以看出，8个同槽异相线棒层间间隙与发电机端传感器安装位置的最小距离为3.6 m、最大距离为85.2 m，如考虑传播衰减，发电机端电容耦合传感器获取的局部放电信号幅值将存在差异。距离A相传感器最近的是30号槽，距离为10.6 m；距离C相传感器最近的是48号槽，距离为3.6 m。如考虑传播衰减，PRPD图谱中幅值从大到小依次是C相、A相。
3.2 传播衰减模拟试验
为进一步探索验证发电机离线试验、在线试验中层间间隙与发电机端传感器安装位置距离对间隙放电局放检测的影响，用相同检测方式开展传播衰减模拟试验。将1根故障线棒S1和1根备用线棒S2串联，在故障线棒和备用线棒端头分别安装传感器S1-C1、S1-C2、S2-C1、S2-C2检测局部放电信号，其中C1、C2之间通过定向分离技术分离两侧的局部放电信号，S1-C1检测线棒S1绝缘故障的局部放电信号，S1-C2检测线棒S2及试验设备的局部放电信号，S2-C1检测线棒S1、S2绝缘故障的局部放电信号，S2-C2检测试验设备的局部放电信号。试验接线如图11所示，检测结果如图12所示。
图12(a)由距离故障点2 m的耦合电容传感器S1-C1采集，可以看到图谱中在相位45°和225°处的防晕搭接电晕放电模式与图11中红色区域线棒S1的实际故障对应，经备用线棒S2传播衰减后，由距离故障点9 m的S2-C1传感器采集，防晕故障局部放电特征仍明显，但放电幅值、数量大幅降低，如图12(b)图谱中相位45°和225°处所示，此时脉冲重复率大于100次/秒的放电（图12(a)中红色、粉色部分）已基本衰减完，具体数据记录如表3所示，其中Qm表示局部放电幅值、Qn表示局部放电的脉冲数量。从表3可知，如果仅考虑电气传导，层间间隙与发电机端传感器安装位置的距离每增大1 m，检测到的放电幅值平均衰减约10%。
3.3 传播衰减对离线、在线试验影响分析
综合绕组结构、层间间隙放电源分布、检测传感器安装位置，参考模拟试验传导衰减程度，对目视检查确认的8个层间间隙放电中的每相离端部最近的3个放电源的离线试验、在线试验检测幅值进行估算。假设距离3.6米的48号槽层间发生间隙放电，发电机端传感器检测幅值为M mV，则其他放电点幅值估算统计结果如表4所示。表4中估算放电幅值情况与离线试验、在线试验检测结果一致。C相放电幅值最大，离线试验、在线试验均能检测到层间间隙放电模式图，A相放电幅值只有C相的30%，B相放电幅值只有C相的15%，放电幅值太小被其他故障模式覆盖。在线试验AC相间分析发现A相无间隙放电特征，这与表4中48号槽间隙放电在线检测中C相放电幅值为M mV，A相放电幅值为10%M mV一致。
因绕组结构检测距离差异影响，想要通过机端传感器检测的局部放电幅值比较不同相放电点的严重程度存在困难，但对于层间间隙放电一般为绕组结构的共性问题，可通过一相检测推测其他相故障情况。
4 结论
收起
（1）绕组层间同槽异相线棒间隙放电有独立特征，特高频局部放检测PRPD模式图显示，脉冲分布呈悬浮状，具有正负极性且极性对称，幅值峰值位于45°和225°前后，两相中一相正负极性脉冲峰值均同时向右偏离45°和225°，另一相正负极性脉冲峰值均同时向左偏离45°和225°。
（2）检测量程对局部放电模式图有影响，大量程全局图谱完整但局部模式相互重叠无法识别具体故障，小量程全局图谱不完整但局部模式图清晰可识别具体故障。
（3）绕组中多个放电源和间隙放电同时存在时，依然可以通过间隙放电模式图的悬浮特征识别层间间隙放电。
（4）绕组结构不同，则间隙放电分布不同、汇流环长度不同，由此造成的检测距离差异对局部放电信号幅值有较大影响，只考虑电气传导，检测距离每增大1 m，放电幅值平均衰减约10%。在发电机绕组试验中，因结构导致检测距离存在差异，间隙放电只有距离较近的一相能检测到，此时相间分析方法失效。
基金
收起
  • 中国华能集团科技项目(HNKJ22-HF95)
文献
收起
参考文献 引证文献
排序方式：
[1]
王新,杨敏,金泱,等.基于热老化的发电机定子线棒局部放电特性研究[J].绝缘材料,2021,54(4):58-63.
[2]
戈宝军,黄启昭,陶大军,等.电机线棒环氧云母绝缘老化特性研究[J].绝缘材料,2021,54(7):53-58.
[3]
高俊国,孟睿潇,胡海涛,等.电机定子绝缘老化寿命预测研究进展[J].电工技术学报,2020,35(14):3065-3074.
[4]
满宇光,兰东宏,赵阳,等.大型水轮发电机绕组端部电晕问题探讨[J].大电机技术,2022(4):29-37.
[5]
HUZMEZANM. Reflections on the on-line partial discharge monitoring and analysis for condition assessment of large generators and motors[C]//2022 Electrical Insulation Conference. Knoxville, USA:IEEE,2022.
[6]
马咸,杨海峰,苏涛,等.基于紫外成像法的发电机定子电晕处理效果定量评估研究[J].大电机技术,2019(2):25-28.
[7]
杨增杰,谭尚仁.紫外成像仪在发电机电晕试验中的应用[J].云南水力发电,2016,32(2):119-121.
[8]
胡胜,郝剑波,罗忠启,等.基于噪声频段提取的水轮发电机故障诊断方法[J].大电机技术,2017(6):25-29.
[9]
LEES H, KONGT S, KIMH D. Analysis of insulation diagnosis for generator-motor stator winding in pumped storage power plant[J]. Journal of Electrical Engineering and Technology,2020,15(3):1269-1280.
[10]
STONEG, CAVALLINIA, BEHRMANNG A. Review of the history of the development of partial discharge testing[C]//2022 Electrical Insulation Conference. Knoxville, USA:IEEE,2022.
[11]
范路,陆云才,陶风波,等.人工智能在局部放电检测中的应用(二):模式识别与状态评估[J].绝缘材料,2021,54(7):10-24.
[12]
陆云才,范路,陶风波,等.人工智能在局部放电检测中的应用(一):去噪与故障定位[J].绝缘材料,2021,54(5):10-20.
[13]
RAMONC, RODRIGOM, FABRICIOJ. Automatic PRPD image recognition of multiple simultaneous partial discharge sour- ces in on-line hydro-generator stator bars[J]. Energies,2022,15:326.
[14]
张跃,梁智明,周进,等.大型水轮发电机定子绕组端部电场分布仿真及试验研究[J].大电机技术,2019(2):9-13.
[15]
孙永鑫,冯超,祝晚华.发电机绕组端部斜边电场的影响因素研究[J].绝缘材料,2021,54(1):50-54.
[16]
全国旋转电机标准化技术委员会.旋转电机 旋转电机定子绕组绝缘 第2部分:在线局部放电测量:GB/T 20833.2—2016[S].北京:中国标准出版社,2016.
[17]
LEVESQUEM, DUKSEOLY, CLAUDEH, et al. Comparative study of phase resolved partial discharge patterns obtained with different instruments on individual stator bars and coils[C]//2022 Electrical Insulation Conference. Knoxville,USA:IEEE,2022.
[18]
LINGYANL, AILIANGK, ZHIPENGL, et al. Development and discharge characteristics of surface tracking on the interface between the PD suppression coatings outside of stator winding slots[J]. IEEE Transactions on Dielectrics and Electrical Insulation,2023,30(1):421-428.
2024年第57卷第1期
PDF下载
128
56
引用本文
BibTeX
文章信息
doi: 10.16790/j.cnki.1009-9239.im.2024.01.014
  • 接收时间：2023-05-25
  • 首发时间：2025-12-22
  • 出版时间：2024-01-20
补充材料
相关文章
文章信息
作者
出版历史
  • 收稿日期：2023-05-25
  • 修回日期：2023-08-18
基金
中国华能集团科技项目(HNKJ22-HF95)
作者信息
    1华能澜沧江水电股份有限公司检修分公司,云南 昆明 650000
    2华能澜沧江水电股份有限公司景洪水电厂,云南 景洪 666100
    3哈动国家水力发电设备工程技术研究中心有限公司,黑龙江 哈尔滨 150040
参考文献
分享链接
https://castjournals.cast.org.cn/joweb/jycl/CN/10.16790/j.cnki.1009-9239.im.2024.01.014
分享至
全文二维码

扫描看全文

引用本文
BibTeX
本文的引用情况
2种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
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
关闭全屏
相关链接
论文
最新文章
热读文章
热点专题
内参
蓝皮书
产业发展报告
传播力报告
期刊分级目录
资讯
学术新闻
行业新闻
学术会议
行业会议
关于
关于我们
联系我们
北京市海淀区学院南路86号
100081
010-62199257
qkjq@cast.org.cn

中国科学技术协会版权所有 京ICP 备10216604号-4 海淀分局备案 1101084647
科技导报社主办 中国科协信息中心技术支持