1982 IEEE International Conference on Electrical Insulation最新文献

A system for computer-aided theoretical and experimental analysis of impurity particle motion in dielectric liquids 介电液体中杂质粒子运动的计算机辅助理论和实验分析系统

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464453

R. Bozzo, G. Calci, P. Girdinio, P. Molfino, G. Molinari, A. Viviani

引用次数: 3

The effects of moisture content, frequency and temperature on the life of miniature XLPE cables 含水率、频率和温度对微型交联聚乙烯电缆寿命的影响

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464490

A. Bulinski, S. Bamji, J. Densley

{"title":"The effects of moisture content, frequency and temperature on the life of miniature XLPE cables","authors":"A. Bulinski, S. Bamji, J. Densley","doi":"10.1109/EIC.1982.7464490","DOIUrl":"https://doi.org/10.1109/EIC.1982.7464490","url":null,"abstract":"The main points of the study reported in this paper are as follows: (i) The amount of moisture in XLPE does not affect the short term ac breakdown strength, provided the insulation is not subjected to electrical stress prior to the breakdown test. (ii) Preimmersing XLPE insulation in tap water prior to electrical aging at room temperature results in a reduction of more than 50% in the breakdown voltage. The preimmersion increases the moisture content, particularly liquid water at room temperature, resulting in increased degradation. (iii) Preimmersion does not have any effect on the breakdown voltage of cables electrically aged at 70°C or 90°C. (iv) For some aging conditions, the short term breakdown voltages of aged cables give no indication of the number of and times to breakdown of the cables during the electrical aging. (v) Direct voltage is quite sensitive to degradation of XLPE by the combined action of moisture and electric stress. Care must be exercised when dc testing aged cables in service. (vi) Complete drying of cables aged in water restores the breakdown voltage to its original value. The improvement is, however, only temporary and the breakdown voltage decreases at a faster rate when aging is continued. (vii) Temperature cycling of the insulation causes small changes in the short term ac breakdown voltage. However, the number of breakdowns occurring during the initial aging (1000 h) is much larger for the temperature cycled cable, indicating that temperature cycling could be an important variable in an accelerated aging test. Whether there is an optimum temperature change to produce maximum degradation still remains to be determined.","PeriodicalId":422317,"journal":{"name":"1982 IEEE International Conference on Electrical Insulation","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121166881","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: 6

The relationship of partial discharge amplitude distributions with dielectric damage at different levels of voltage and frequency 研究了不同电压和频率下局部放电振幅分布与介质损伤的关系

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464439

W. K. Hogg, R. Miller, G. Rabach, D. Ryder

引用次数: 10

Anomalous breakdown in PMMA under switching surges superimposed on direct voltage 直流电压叠加开关浪涌作用下PMMA的异常击穿

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464450

C. Venkataseshaiah, C. N. Reddy, T. Eish

引用次数: 0

Insulation strength and breakdown of impregnate D paper-lapped conductors for transformers 变压器用浸渍D纸搭接导体的绝缘强度和击穿

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464465

A. Hossam-eldin, A. M. Khalil

引用次数: 0

Breakdown behaviour of nonuniform arrangements in air and SF6 using oscillating lightning impulse voltage 振荡雷击电压对空气和SF6中非均匀排列击穿的影响

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464469

E. Gockenbach, J. Meppelink

引用次数: 1

Effect of temperature rise on leakage current and breakdown of power cables 温升对电力电缆泄漏电流和击穿的影响

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464462

Y. Abed

引用次数: 4

The effect of absorbed oxygen on electrical treeing in polymers 吸收氧对聚合物中电树的影响

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464496

N. Shimizu, J. Mori, M. Kosaki, K. Horii

引用次数: 4

Polymer concrete as a dielectric material a critical assessment of the state-of-the-art 聚合物混凝土作为一种电介质材料是目前最重要的评价

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464481

M. Gunasekaran

{"title":"Polymer concrete as a dielectric material a critical assessment of the state-of-the-art","authors":"M. Gunasekaran","doi":"10.1109/EIC.1982.7464481","DOIUrl":"https://doi.org/10.1109/EIC.1982.7464481","url":null,"abstract":"Polymer concrete is a composite material that is gaining interest internationally for a wide variety of applications. By virtue of its relatively low cost, its castability at room temperature, its good mechanical and dielectric properties, this material is being considered for use in outdoor and indoor high voltage insulation applications. This paper traces the historical development of polymer concrete for dielectric applications, and critically discusses the research and development data presently available (including those published for Polysil, a trade-marked version of one type of polymer concrete developed under the auspices of the Electric Power Research Institute of Palo Alto, California). Deficiencies in technical information, which need to to be rectified before the electric utility industry can and will routinely accept polymer concrete as a low-cost alternative to porcelain and epoxy insulation, are discussed. New data on dielectric grade polymer concrete subjected to multiple stress conditions is to be made available during the oral presentation of this paper. Recommendations are put forth for further characterizing polymer concrete to facilitate its ready acceptance in the electric utility industry.","PeriodicalId":422317,"journal":{"name":"1982 IEEE International Conference on Electrical Insulation","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115238198","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: 2

Impulse corona in positive rod-plane gaps filled with SF6 gas mixtures 充满SF6气体混合物的正棒面间隙中的脉冲电晕

1982 IEEE International Conference on Electrical Insulation Pub Date : 1982-06-07 DOI: 10.1109/EIC.1982.7464467

Y. Safar, A. Qureshi, N. Malik

引用次数: 2