Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480)最新文献_第7页

Partial discharges mechanisms under different voltage waveforms 不同电压波形下的局部放电机理

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247910

F. Guastavino, E. Torello, M. di Lorenzo del Casale, L. Egiziano

引用次数: 5

Acid rain aging of silicone rubber materials in a fog chamber 硅橡胶材料在雾室中的酸雨老化

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247846

N. Frost

引用次数: 2

Insulating paper ageing and furfural formation 绝缘纸老化和糠醛形成

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247898

P. Pahlavanpour, Eklund, M. Martins

{"title":"Insulating paper ageing and furfural formation","authors":"P. Pahlavanpour, Eklund, M. Martins","doi":"10.1109/EICEMC.2003.1247898","DOIUrl":"https://doi.org/10.1109/EICEMC.2003.1247898","url":null,"abstract":"Transformer condition monitoring is carried out regularly to establish state of the health of transformer. Based on results corrective actions are taken to preserve and prolong the lifetime of the unit. All insulation materials used in construction of transformer are, made from organic compounds and therefore, decomposes and deteriorates at high temperature. Insulating oil in service will oxidise and eventually reach to a step, which is not fit for the purpose. In such case maintenance guide recommend to change the oil. Insulating paper in service is similarly subjected to beat and also damaged by the oil oxidation products. The same maintenance regime is not applicable to the paper and reaction of paper degradation is not reversible, therefore life of transformer is life of the paper. In practice, it is impossible to have an accurate condition assessment without opening the transformer and have paper sample. In the other hand this is impossible practice and condition of the paper is assessed indirectly. It is established earlier that furfurals are by-products of paper ageing and can be used as indication of paper ageing. However, to relate furfuraldehyde, also named furfural (2FAL), content of a unit to age and extend of paper deterioration more research and laboratory studies are required. This paper describes laboratory studies of paper ageing and relating by-product of paper ageing to state of the insulating paper. Oil and paper are aged at different temperature, 2FAL, gases and moisture of aged samples are measured. A model for paper ageing is established.","PeriodicalId":274147,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130628135","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: 41

Remote parameter set up and production data collection on armature manufacturing work cells 电枢制造工作单元的远程参数设置和生产数据收集

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247891

R. L. Lonsbury

引用次数: 1

Future energy challenge: a novel low-cost adjustable speed motor with wide speed range 未来的能源挑战:一种新型低成本、宽调速范围的可调电机

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247946

A.A. Aboul-Naga, J. Szekely, A. Emadi

引用次数: 0

Failure analysis in capacitors 电容器失效分析

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247884

J.W. Smith, W. Keller

引用次数: 0

A new generation of wire enamel for the production of magnet wires with outstanding corona resistance 新一代磁线搪瓷，用于生产具有出色电晕抗性的磁线

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247865

F.-R. Bohm, K. Nagel, H. Schindler

引用次数: 5

Experience with high potential testing hydro generator multi turn stator coils using 60 Hz AC, DC, and VLF (0.1 Hz) 具有高电位测试水轮发电机多匝定子线圈的经验，使用60hz交流，直流和VLF (0.1 Hz)

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247922

S. Bomben, H. Sedding, J. DiPaul, R. Głowacki

{"title":"Experience with high potential testing hydro generator multi turn stator coils using 60 Hz AC, DC, and VLF (0.1 Hz)","authors":"S. Bomben, H. Sedding, J. DiPaul, R. Głowacki","doi":"10.1109/EICEMC.2003.1247922","DOIUrl":"https://doi.org/10.1109/EICEMC.2003.1247922","url":null,"abstract":"There are many different methods of employing a high potential test on a stator winding. Three such methods that this paper will explore with reference to one another are the AC (50-60 Hz), DC, and very low frequency (VLF) (0.1 Hz). Some users choose the AC high potential test knowing that this test best simulates the voltage stress on the winding while in service. Other users prefer the DC high potential test largely due to ease in performing the test. However, the DC voltage does not stress the stator coils the same way as when they are in service and may result in overly pessimistic results due to the influence of surface contaminants in the end windings. Finally, the VLF test, due to recent advances in technology, is becoming more practical for use in field conditions. However, the present standard governing the test is almost 40 years old and there is significant interest in what VLF voltage level best correlates with the AC and DC high potential tests. This paper reports preliminary test results on three generator windings that were destructively tested using the AC, DC, and VLF methods as part of an ongoing effort to provide a database upon which to set the appropriate VLF hipot level for modern synthetic resin-based stator insulation systems.","PeriodicalId":274147,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132620313","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

Progress in understanding the nature of PD in stators created by inverter drives 在理解由逆变器驱动产生的定子中PD的性质方面取得的进展

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247912

M. Fenger, G. Stone

引用次数: 4

Online monitoring prevented catastrophic failure of a GSU transformer 在线监测防止了GSU变压器的灾难性故障

Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Technology Conference (Cat. No.03CH37480) Pub Date : 2003-11-24 DOI: 10.1109/EICEMC.2003.1247900

T. C. Garg, E. Huber

引用次数: 0