Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)最新文献_第9页

Restoration of ground-wall armor of stator bars exposed to slot discharges 受槽放电影响的定子棒的地壁铠装修复

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995983

C. Hudon, M. Bélec, C. Guddemi, S. Lamothe, S. Nguyen, D. Nguyen

引用次数: 3

The new approach to designing HV insulation with high reliability for overhead lines and substations 架空线路和变电站高压绝缘高可靠性设计的新途径

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995928

A. Valdman

{"title":"The new approach to designing HV insulation with high reliability for overhead lines and substations","authors":"A. Valdman","doi":"10.1109/ELINSL.2002.995928","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995928","url":null,"abstract":"To specialists, insulation coordination is well-known. The insulation level of the overhead line or the substation is determined from a distribution curve of the flashover voltage of a single insulator in the region of extremely low probabilities (flashover voltage distribution-FOV). This probability of insulation flashover, the minimum acceptable in operation, (Pperm) corresponds to a certain voltage Uo which, as a matter of fact, is the insulation level (BIL) of the line of substation as a whole. From here it follows that the possible difference in the form of the flashover distribution curve in the region of very small probabilities by calculation (a part of a curve \"C\", instead of a part \"B\") can result in a serious mistake in the design (coordination) of the insulation level of lines and substations. The author of this paper carried out research into the so-called anomalous characteristics of HV insulators of simple profiles (1998). Their main characteristics essentially, and sometimes extremely, differ from well-known characteristics in configuration, and quantitative parameters. The existence of the mentioned anomalies in common insulators with sheds (porcelain, glass and so on) also was demonstrated by the author. These anomalies are usually located in the region of probabilities considerably below achievable experimental probabilities. The paper continues the work of the previous publication and reports: the mechanism of occurrence of anomalous discharges in a compressed form; questions of insulation coordination in view of the observed effect; and new ways of designing high-voltage insulation of increased reliability.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"151 1","pages":"264-270"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77525089","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: 5

Wavelet de-noise on gas PD signals of coaxial cylinder electrodes 同轴圆柱形电极气体放电信号的小波去噪研究

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995971

D. Zheng, Yang Chen, Xiaochun Chi, Jia-xiang Yang

引用次数: 1

Reliability assessment of polymeric insulators by the combined aging test 基于复合老化试验的聚合物绝缘子可靠性评估

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995918

J. Han, B. Lee, Dong myung Kim

引用次数: 2

About the PD-testing of insulation systems with high-frequency voltages 关于高频电压绝缘系统的pd测试

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995990

M. Paede, W. Pfeiffer

引用次数: 4

Characterization of partial discharge signals using wavelet and statistical techniques 用小波和统计技术表征局部放电信号

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995869

Yu Ming, S. Birlasekaran

引用次数: 22

An alternative methodology for thermoset resin dielectric insulation material insertion and electrical apparatus life cycle predictability 热固性树脂介电绝缘材料插入和电气设备寿命周期可预测性的替代方法

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995958

J. G. Hubrig

{"title":"An alternative methodology for thermoset resin dielectric insulation material insertion and electrical apparatus life cycle predictability","authors":"J. G. Hubrig","doi":"10.1109/ELINSL.2002.995958","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995958","url":null,"abstract":"The successful insertion of an epoxy formulation into an advanced dielectric insulation system may be characterized as an expression of a complex, interactive set of properties and processing parameters; from raw material selection to design configuration. This expression represents the electrical apparatus as a set of structure and component design configurations ordered by assembly methodology to meet a given set of operating life cycle performance specifications. When reduced to their lowest common denomination; the electrical apparatus structure and component design configurations become an expression of interdependent material generic properties; while assembly methodology and operating life cycle performance specifications are reduced to an expression of progressive sets of ambient exposures. This programmatic approach redefines electrical apparatus into a weighted matrix expression of: (1) design configuration constituent material generic properties and their requisite handling parameters; (2) design configuration requisite assembly processing parameters; (3) operating life cycle performance specifications; (4) known constituent material generic property degradation profiles; and (5) electrical apparatus root cause failure history. This matrix expression represents an alternative methodology that will facilitate the timely insertion of new materials into advanced systems and will predict the in-service operating performance of an electrical apparatus while greatly reducing the expense and reliance on full-scale modeling and prototype development.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"13 1","pages":"391-394"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87187480","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

Some factors affecting the diagnosis of latent fault in XLPE cable insulation 影响交联聚乙烯电缆绝缘潜在故障诊断的几个因素

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995890

Chunxi Zhang, Shouguo Sheng, Xiaochun Chi, Jia-xiang Yang

引用次数: 0

The importance of generator operating conditions on PD data evaluation 发电机运行工况对PD数据评估的重要性

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.996006

H. van Breen, E. Gulski, J. Smit, H. Verhaart, W. de Leeuw

{"title":"The importance of generator operating conditions on PD data evaluation","authors":"H. van Breen, E. Gulski, J. Smit, H. Verhaart, W. de Leeuw","doi":"10.1109/ELINSL.2002.996006","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.996006","url":null,"abstract":"This paper summarizes the results of a preliminary study on the influence of generator operating conditions on its partial discharge (PD) activity. This study covers results from the field measurements as well as from laboratory investigations. The turbo generator discussed in this paper showed an extra PD source at high temperature. This extra PD source was activated at high temperatures and vanished at lower temperatures. The activation and the de-activation process had a clear hysteresis character. Both the measurements on the turbo generator and in the laboratory showed that there is certain dependence between the internal PD and the actual temperature of the stator coil. Due to the fact that in practice the moment at which a periodic measurement is performed does not always represent the PD activity of a generator under all its operating conditions, it is of practical interest to investigate the dependences between the power, temperature and the actual PD activity. A full investigation into the relation between generator operating conditions and its PD activity is justified.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"52 1","pages":"582-585"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83974051","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: 11

Diagnosing the insulation condition of dry type transformers using a multiple sensor partial-discharge-localization technique 用多传感器局部放电定位技术诊断干式变压器绝缘状况

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995904

P. Werle, H. Borsi, E. Gockenbach

引用次数: 10