Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)最新文献_第4页

New insulating materials and process equipment for the consolidation of coils and Roebel bars 用于线圈和罗贝尔棒加固的新型绝缘材料和工艺设备

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995981

R. Bruetsch, R. Schwander, F. Wolf, Marco Naegelin

{"title":"New insulating materials and process equipment for the consolidation of coils and Roebel bars","authors":"R. Bruetsch, R. Schwander, F. Wolf, Marco Naegelin","doi":"10.1109/ELINSL.2002.995981","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995981","url":null,"abstract":"The driving force of material and process development in the insulation technology of rotating high voltage machines has changed in the last ten to fifteen years. Being mainly technology driven in the past, cost has become the determining factor in the industry. Improvements in products or processing are only accepted if they reduce overall cost. On the other hand, high voltage motors and generators are long-life capital goods and a reduction in reliability cannot be tolerated. To be successful in the market any development of new insulating materials has to reflect these facts. For this reason a new range of fast curing products for the consolidation of Roebel bars and double layer coils has been developed. The application of the new fast curing materials can be automated using new types of equipment for the production and consolidation of Roebel bars. The new fast curing materials provide a substantial reduction of. processing time and saving of hot press capacity and energy. Together with the new automated Roebelling and application equipment they go a long way towards cost reduction in the production of rotating high voltage machines.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"7 1","pages":"488-491"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81082895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Partial discharge measurement and monitoring on rotating machines 旋转机械局部放电测量与监测

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.996003

D. Gross

引用次数: 20

Influence of the cure parameters on the partial discharge behavior of cast resins 固化参数对铸造树脂局部放电行为的影响

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995957

R. Kotte, E. Gockenbach, H. Borsi

引用次数: 11

Study on PD characteristics of insulation internal defects of large generator stator bar 大型发电机定子棒绝缘内部缺陷的局部放电特性研究

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995870

Xiongwei Jiang, Gang Liu, Guangchun Zhang, Guangning Wu

引用次数: 1

A study of large current interrupting capability of SF/sub 6//N/sub 2/ mixtures SF/sub - 6//N/sub - 2/混合物大电流断流能力研究

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995973

W. Song, D.I. Yang, Y.H. Chung, D.S. Kim, H. S. Koh

引用次数: 2

Lifetime extension experience on rotating machine insulation using on-line PD testing 具有使用在线PD测试旋转机器绝缘的终身经验

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.996001

H. Zhu, V. Green, D. Huynh

{"title":"Lifetime extension experience on rotating machine insulation using on-line PD testing","authors":"H. Zhu, V. Green, D. Huynh","doi":"10.1109/ELINSL.2002.996001","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.996001","url":null,"abstract":"Rotating machine failures due to insulation breakdown can cause catastrophic damages to the equipment, loss or de-rating of power output, lengthy forced outages and heavy costs to the utility. Therefore it is desirable to detect the onset of significant insulation deterioration and identify potential failures as early as possible. As in the medical field, regular testing and early detection of problems mean better chances of survival for the 'patient'. Faced with increasing pressure to increase unit availability yet reduce maintenance costs, utilities are moving away from time-based maintenance practices to condition-based maintenance efforts. Owners of generators and large motors are using on-line partial discharge analysis (PDA) systems for condition monitoring of the stator insulation system. Regular condition monitoring of the stator winding insulation can give users the confidence to safely operate machines, even ones that have suffered some degree of insulation degradation. This paper presents two case studies of how utilities applied an online PD testing system on a generator and a motor with insulation degradation to avoid substantial costs and forced outages. Long-term online PD monitoring has given the utilities confidence to continue running machines that have the potential for insulation failures.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"7 1","pages":"561-564"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74024496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

An improved model for the calculation of the electrical onset in gas insulated medium inhomogeneous gaps 一种改进的气体绝缘介质非均匀间隙中起电量计算模型

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995963

C. Bak, B. Bak‐Jensen, J. T. Sørensen

{"title":"An improved model for the calculation of the electrical onset in gas insulated medium inhomogeneous gaps","authors":"C. Bak, B. Bak‐Jensen, J. T. Sørensen","doi":"10.1109/ELINSL.2002.995963","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995963","url":null,"abstract":"Most hardware for use in HV systems requires a thorough geometric design concerning the inception of breakdown (partial discharges, corona). Work shows an interest in such corona onset design optimization criteria. Corona onset optimization is based on numerical E-field calculations and different methods for determination of onset/no onset. Practical HV equipment conductor surfaces will normally form nonuniform E-fields possessing a breakdown behaviour determined by both the surface electric field and the rate of decay of the field. Besides that, among other issues, one has to take into account the type of gas, the temperature and the pressure. Therefore it seems important to apply an accurate onset criteria in corona onset design. This work presents the first step of a validated onset criteria useful for practical electrode geometries. This is accomplished for atmospheric air on the basis of the well-known Townsend approach for nonuniform fields with modifications concerning the gas parameters and validation against IEC 52 sphere-sphere gap breakdown voltages. It was found that the onset/breakdown voltage for medium nonuniform fields can be calculated by means of the same criteria for varying electrode curvatures and degrees of field utilization with an accuracy better than 4%.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"25 1","pages":"411-416"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74220990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A partial discharge coupler for global VPI (CGVPI) rotating machines 用于全局VPI (CGVPI)旋转电机的局部放电耦合器

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995871

YongJun Kim, D. Kang, D. Hwang, Doh-Young Park

引用次数: 2

Recent field experience in PD assessment of power cables using oscillating voltage waveforms 最近有使用振荡电压波形对电力电缆进行局部放电评估的现场经验

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995995

S. Brettschneider, E. Lemke, J. L. Hinkle, M. Schneider

引用次数: 11

Model for high field conduction in doped polymers 掺杂聚合物的高场传导模型

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995939

X. Qi, S. Boggs

引用次数: 5