IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena最新文献_第4页

Streamer propagation and breakdown in transformer oil under overvoltage in semi-uniform gaps 半均匀间隙过电压下变压器油中的流线传播和击穿

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641165

G. Massala, O. Lesaint

引用次数: 9

Quality assessment of HVDC components by PD analysis 基于PD分析的高压直流元件质量评价

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641131

P. Morshuis, J. Beyer

引用次数: 15

EHD surface waves of diesel oil thin films generated by wire-plate barrier discharges 线板阻挡放电产生的柴油薄膜EHD表面波

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641162

Jen-Shih Chang, K. Urashima, J. Cho, G. Artana, G. Touchard

{"title":"EHD surface waves of diesel oil thin films generated by wire-plate barrier discharges","authors":"Jen-Shih Chang, K. Urashima, J. Cho, G. Artana, G. Touchard","doi":"10.1109/CEIDP.1997.641162","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.641162","url":null,"abstract":"An experimental investigation has been conducted to study electrohydrodynamically (EHD) induced surface wave phenomena on the surface of dielectric diesel oil thin films under wire-plate barrier discharges. Experimental arrangements used in the present investigation consisted of a corona wire, air gaps, thin oil film, mylor sheet and conducting transparent sheet placed on the lucite plate. Positive dc (on/off) high voltage was imposed on the corona wires and the conducting sheet was grounded. Diesel oil is used as a working fluid (/spl epsi//sub s/=2.2 and /spl sigma/5/spl times/10/sup -/5 /spl mu/S/m). The experimental results show that: (1) Thin oil film started to deform immediately when dc voltage is imposed and a small elongated ring shape hydraulic jump expanding wave is formed; (2) after thin oil film becomes significantly charged, a formation of depressing expanding elongated ring-shaped waves are observed and relatively uniform oil thin films formed below corona wires; (3) after voltage is off, a formation of depression expanding waves is observed and the surface waves keep forming and decay until all the electric charges at the surface of the diesel oils are relaxed.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128806596","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

Non-conventional characterisation of MV measurement transformers solid insulation systems through analyses of digitally acquired PD patterns 通过分析数字采集的局部放电模式，对中压测量变压器固体绝缘系统进行非常规表征

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634603

R. Bozzo, L. Centurioni, G. Coletti, C. Gemme, F. Guastavino

引用次数: 1

Analysis of the ionized field associated with a bundled DC line including effect of wind 含风影响的直流线束电离场分析

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641097

Xin Li, M. Raghuveer, I. Ciric

引用次数: 1

Influence of metal inclusions on the breakdown strength of model cables 金属夹杂物对模型电缆击穿强度的影响

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634614

J.R. Antonischki, U. Nilsson, S. Gubanski

引用次数: 1

Electret properties of cycloolefin copolymers 环烯烃共聚物的驻极体性质

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641113

G. Sessler, G. Yang, W. Hatke

引用次数: 14

A new tool to study the ageing of the winding insulation of electrical machines 研究电机绕组绝缘老化的新工具

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641108

J. Castellon, J. Bouquart, J. Reboul, A. Toureille

{"title":"A new tool to study the ageing of the winding insulation of electrical machines","authors":"J. Castellon, J. Bouquart, J. Reboul, A. Toureille","doi":"10.1109/CEIDP.1997.641108","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.641108","url":null,"abstract":"Nowadays, a frequent cause of failure of AC-supplied machines is the breakdown of the stator insulation. In fact, these machines have to endure repeated mechanical, electrical and thermal constraints and, besides, when they are supplied by variable speed drives, the winding insulation is submitted to steep voltage fronts. In this paper, we study the setting up of the space charge as a consequence of the ageing of the stator insulation. The Thermal Step Method (TSM) was used to measure the space charge. We characterized samples taken from AC-machines stators windings which had been submitted to several ageing conditions (temperature, voltage fronts of different heights and steepness). In order to complete the investigations, we made also measurements of Thermally Stimulated Discharge Currents (TSDC) which give the energy levels of the traps. The results of this work prove the ability of the TSM for the composite insulating materials of a stator winding. They show that certain ageing parameters such as temperature and characteristics of voltage fronts act upon the level and the type of the space charge. By associating the two techniques (TSM and TSDC) we can perform a complete study of the apparition and of the development of the space charges, and therefore predict the stator insulation lifetime: it is a new diagnostic tool for these components.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131269396","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: 7

Non-linear transient current in thin polyimide films prepared by vapor deposition polymerization 气相沉积聚合法制备聚酰亚胺薄膜的非线性瞬态电流

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634576

S. Yoda, S. Sonehara, K. Miyairi

引用次数: 2

Anomalous low-frequency dispersion in X/sub 2/BaCuO/sub 5/ compounds X/ sub2 /BaCuO/ sub5 /化合物中的异常低频色散

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634585

J. L. Vicente, A. C. Razzitte, M. C. Cordero, E. Mola

引用次数: 0