2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena最新文献_第3页

Experimental Study of Electrohydrodynamic Pumping Feasibility In Microgravity Condition through Conduction Phenomenon 微重力条件下通过传导现象的电液动力泵可行性实验研究

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312087

M. Ashjaee, S. R. Mahmoudi

{"title":"Experimental Study of Electrohydrodynamic Pumping Feasibility In Microgravity Condition through Conduction Phenomenon","authors":"M. Ashjaee, S. R. Mahmoudi","doi":"10.1109/CEIDP.2006.312087","DOIUrl":"https://doi.org/10.1109/CEIDP.2006.312087","url":null,"abstract":"In the microgravity condition, circulation of liquids with low level of power consumption is extremely attractive. Electrohydrodynamic pumps generate significant pressure heads with low level of power consumption, simple design, low vibration, and acoustic noise. Moreover, the appropriate electrohydrodynamic pressure heads can be achieved easily with variation of applied voltage. Among the electrohydrodynamic pumping methods, the EHD-conduction pumping has a special feature. Owing to the absence of the ion injection effects, the physical and electrical properties of the working fluid remain constant. Pumping through conduction phenomenon is experimentally investigated. An EHD-pump in a horizontal axisymmetric configuration is tested. The working fluids are selected based on their viscosity difference. These two working fluid, Shell Diala AX and 10-GBN Nynas, have the same conductivity approximately. The generated head in the absence of the gravity is obtained. Velocities up to the 0.4 m/s with 0.9 w can be achieved. In the microgravity condition, the viscous forces are balanced just with Electric forces generated by EHD-Pumps. The EHD-conduction pumps promise good chance to use as a circulation pump in cooling or lubricating systems in microgravity condition with low power consumption and without degradation of working fluid.","PeriodicalId":219099,"journal":{"name":"2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114668909","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

Ageing of biodegradable oils for high voltage insulation systems 高压绝缘系统用可生物降解油的老化

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.311974

I. Hosier, A. Vaughan, F.A. Montjen

{"title":"Ageing of biodegradable oils for high voltage insulation systems","authors":"I. Hosier, A. Vaughan, F.A. Montjen","doi":"10.1109/CEIDP.2006.311974","DOIUrl":"https://doi.org/10.1109/CEIDP.2006.311974","url":null,"abstract":"In most items of high voltage equipment a mineral or synthetic oil is still used in conjunction with paper as the dielectric medium. However, the environmental impact, lack of natural oil reserves and the difficulties associated with the disposal of used oils, have prompted researchers to direct their focus onto renewable and biodegradable materials. Originally used in capacitors, these oils are now finding usage in some transformer installations particularly in the United States. Of course a degree of processing is required to make these oils into a form suitable for use in high voltage equipment, including the removal of water and solid matter and the addition of antioxidants. At present at least two commercial products are available; namely Biotemp (ABB) and Envirotemp FR3 (Cooper Industries). With increasing pressure towards renewable and biodegradable materials, such oils are likely to find increased use in the future. Therefore it seems prudent to begin investigations of the ageing behaviour of a variety of vegetable based oil systems in the laboratory and assess their potential for application as high voltage insulation oils.","PeriodicalId":219099,"journal":{"name":"2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena","volume":"520 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116181004","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: 14

Dielectric Properties of Boron Nitride Filled Epoxy Composites 氮化硼填充环氧复合材料的介电性能

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312052

Chaowu Zhang, G. Stevens

{"title":"Dielectric Properties of Boron Nitride Filled Epoxy Composites","authors":"Chaowu Zhang, G. Stevens","doi":"10.1109/CEIDP.2006.312052","DOIUrl":"https://doi.org/10.1109/CEIDP.2006.312052","url":null,"abstract":"In this paper, we report some preliminary measurements on the dielectric response and properties of boron nitride filled epoxy resin composites consisting of a typical anhydride cured bisphenol-A epoxy resin system. Both conventional stirring and ultrasonic processing had been used to obtain fine dispersion of the microfillers in the matrix. Dielectric spectroscopy of the samples has been undertaken in the frequency domain from 10-2 Hz to 106 Hz and in the temperature range from -50 to 120 degC. The results showed that the dielectric constant of the composites increase slightly with increasing concentration of fillers. A broad loss peak is present in the low frequency region in all samples from pure epoxy resin to composites with 20 wt% of boron nitride. This peak moves to higher frequencies with increasing temperature, and no obvious difference in position and shape of this peak is found across all levels of filling at each temperature. The dc conduction current has also been measured in the temperature range from -50 to 120 degC. The results showed that there is no significant difference in the dc conduction current across this temperature range and there is only a weak dependence on the concentration of the fillers above 60 degC.","PeriodicalId":219099,"journal":{"name":"2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena","volume":"38 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120853167","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: 22

Effect of moisture diffusion and heat cycling on low voltage oil-impregnated-paper insulated distribution cables 湿扩散和热循环对低压油浸纸绝缘配电电缆的影响

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312105

S. Rowland, M. Wang, M. Michel

引用次数: 2

Analyzing Dynamic of Moisture Equilibrium in Oil-paper Insulation in Power Transformers for Efficient Drying 电力变压器高效干燥油纸绝缘水分平衡动态分析

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.311990

A. Akbari, S. DehPahlevan, H. Borsi

引用次数: 12

Partial discharges in silicone gel in the temperature range 20-150°C 在温度范围20-150°C的硅凝胶中局部放电

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312001

M. T. Do, J. Augé, O. Lesaint

引用次数: 10

Influence of absorbed water on the dielectric properties and glass-transition temperature of silica-filled epoxy nanocomposites 吸附水对二氧化硅填充环氧纳米复合材料介电性能和玻璃化转变温度的影响

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.311934

C. Zou, M. Fu, J. Fothergill, S. Rowe

引用次数: 30

Frequency distribution of RF energy from PD sources and its application in combined RF and IEC60270 measurements PD源射频能量的频率分布及其在射频和IEC60270联合测量中的应用

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312013

A. Reid, M. Judd, B. Stewart, R. Fouracre

引用次数: 20

Finite Element Analysis of Charge Injection and Transport in a Dielectric Liquid 介电液体中电荷注入和输运的有限元分析

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312078

Sehee Lee, F. O'Sullivan, I. Park, M. Zahn, L. Pettersson, Rongsheng Liu, O. Hjortstam, A. Jaksts, T. Auletta, U. Gafvert

引用次数: 7

A fully self-consistent parametric 2D model of the filamentary streamer head as applied to spectral diagnostics of streamer discharges 建立了一种完全自一致的二维参数流光头模型，并应用于流光放电的光谱诊断

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312071

Y. Shcherbakov

引用次数: 1