Conference Record of the 2006 IEEE International Symposium on Electrical Insulation最新文献_第6页

Quality evaluation of stator coils and bars under thermal cycling stress 定子线圈和棒在热循环应力下的质量评价

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665338

H. Zhu, C. Morton, S. Cherukupalli

引用次数: 13

Extension of generator lifetime by winding renewal 通过更换绕组延长发电机寿命

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665268

C. Sumereder, R. Woschitz, M. M., H. Egger, M. Marketz

引用次数: 3

What is "nano" in the context of a filled dielectric? 在填充电介质的背景下，什么是“纳米”?

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665310

A. An, S. Boggs

引用次数: 8

Insulating system characterisation of high temperature superconductor flat cables 高温超导体扁平电缆绝缘系统特性

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665252

F. Guastavino, G. Coletti, E. Torello, R. Brambilla, L. Martini

引用次数: 0

Modeling of stress-enhancement at defects inside cable insulation 电缆绝缘缺陷处应力增强的建模

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665367

T. Person, K. Yang, J. Jiang

{"title":"Modeling of stress-enhancement at defects inside cable insulation","authors":"T. Person, K. Yang, J. Jiang","doi":"10.1109/ELINSL.2006.1665367","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665367","url":null,"abstract":"AC breakdowns are commonly used as a performance indicator for power cables, and yet the data generated can be misinterpreted if the test section of cable is found to have a manufacturing defect. As an example, in a recent publication, dielectric a breakdown value on a 17-year field aged cable was treated as a \"suspension\" by the authors after the discovery of a conductor shield skip at the failure location; and yet, others have taken the same data set and have analyzed the uncensored data as indicative of the material performance. In an effort to resolve the differences, the same data set is considered here, with an assumption that degree of aging is not significantly impacted by any enhancement of field-aging stresses. Statistical analysis is performed to determine if the questionable breakdown value can be considered an outlier. A 2-dimensional finite element analysis based upon the shape of the defect enables an estimate of the local stress enhancement factor, and a \"corrected\" breakdown value is calculated. The original authors conservative treatment of the questionable breakdown value as a \"suspension\" is supported by analysis with inclusion of a stress-corrected breakdown value, and the two approaches yield similar failure distributions. Use of the uncorrected value in discussions related to failure probabilities on the low-stress side of the distribution is shown to substantially underestimate failure stresses","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115179978","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: 1

On-line diagnostics of power transformers 电力变压器在线诊断

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665377

V. Mentlík, P. Prosr, J. Pihera, R. Polanský, P. Trnka

{"title":"On-line diagnostics of power transformers","authors":"V. Mentlík, P. Prosr, J. Pihera, R. Polanský, P. Trnka","doi":"10.1109/ELINSL.2006.1665377","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665377","url":null,"abstract":"A condition of oil-paper insulating system is principal diagnostic indicator for failure-free operation of power transformers. This insulating system is thought to be one of the key components of the whole machine. During the operation of the transformer ageing of the insulating system appears, which may cause changes of its important electrical and mechanical properties. Many factors work simultaneously on the insulation during the operation and the particular effects influence each other as well. The material ageing is also affected by changes of operating properties. Ageing rate of organic components, which compose the insulating system, is mainly accelerated by temperature, humidity and oxygen presence. The diagnostic system, which is mainly applied during the shutdown of the transformer, contributes to the detection of the ageing level and to the judgement of residual working life. Also on-line diagnostic systems are currently more applied, especially for strategically significant devices or in cases, when appeared failure could lead to considerable economic waste. This contribution focuses on analysis of factors causing degradation of insulating system of power transformer as well as on sequent elaboration of programme application for on-line diagnostics of these transformers. Above-mentioned application has been programmed in Lab VIEW graphics environment and provides actions connected with computer analysis, visualization and saving of measured data. The programme also starts alarm in case of overrunning of pre-set limit values and provides approximate estimation of residual working life of device. The main advantage of computing solution of devices consists in the possibility of flexible conformation of sensors and digital indications in accordance to current requirements of particular users","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133016132","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: 9

Response of capacitive couplers on a generating unit to various sources of partial discharge 发电机组上电容耦合器对各种局部放电源的响应

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665260

W. McDermid, J. Bromley, T. Black

引用次数: 2

New generation of conductive tapes for high voltage applications 用于高压应用的新一代导电胶带

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665336

H. Brandes, T. Hillmer, M. R. Levit, W. Corbett, N. Frost

引用次数: 2

Comparison of electroluminescence of different high voltage cable materials under identical experimental conditions 不同高压电缆材料在相同实验条件下的电致发光比较

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665283

A. M. Ariffin, P. Lewin, S. Dodd

引用次数: 4

Failure characteristics of suspension-type porcelain insulators on a 154 kV transmission line 154kv输电线路悬挂式瓷绝缘子的失效特征

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665271

Se-Won Han, Han-Goo Cho, I. Choi, Dong-il Lee

引用次数: 5