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Conference Record of the 2006 IEEE International Symposium on Electrical Insulation最新文献

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The effect of electrical field on the slow polarization of nano-SiO/sub x/ and low-density polyethylene composite 电场对纳米sio /sub - x/和低密度聚乙烯复合材料慢极化的影响
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665358
Zhe Li, Y. Yin, Xiaobing Dong
{"title":"The effect of electrical field on the slow polarization of nano-SiO/sub x/ and low-density polyethylene composite","authors":"Zhe Li, Y. Yin, Xiaobing Dong","doi":"10.1109/ELINSL.2006.1665358","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665358","url":null,"abstract":"The composite of nano-SiOx and low-density polyethylene is prepared with the double-solution method. Charging currents of the composite at different dc stress, as well as discharging currents, are recorded with Keithley 6517A. It is found that the curves of charging and discharging currents increase with electrical field. Transferring those charging and discharging currents from time domain into frequency domain with Fourier Transform method, it is found that the shapes of the dielectric loss spectrum vary with electrical field. At the same time, it is also found that the dielectric loss peaks increase with electrical field in frequency domain. It is believed that these phenomena have close relation with traps of the interfaces between nano-SiOx and polyethylene, as well as carriers trapping and de-trapping in those interfaces","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114256484","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
Understanding the economic cost impact of ground wall reduction in 13,800 V AC induction motors 了解13,800 V交流感应电动机减少地墙对经济成本的影响
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665276
J. Williams
{"title":"Understanding the economic cost impact of ground wall reduction in 13,800 V AC induction motors","authors":"J. Williams","doi":"10.1109/ELINSL.2006.1665276","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665276","url":null,"abstract":"This paper will give you an understanding of the design consideration and cost savings that can be achieved with improved insulation systems capable of operating at higher stress voltage. The improved thinner ground wall design results in a significant reduction in the amount of insulation, core steel, magnet wire and rotor conductor needed to build the stator and rotor assembly and also reduce copper and core losses and improve motor efficiency","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"15 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114048580","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: 0
Control of water tree length and density in cable insulation polyethylenes 电缆绝缘聚乙烯水树长度和密度的控制
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665284
Florin Ciuprina, G. Teissèdre, J. Filippini, N. Hampton, A. Smedberg, A. Campus
{"title":"Control of water tree length and density in cable insulation polyethylenes","authors":"Florin Ciuprina, G. Teissèdre, J. Filippini, N. Hampton, A. Smedberg, A. Campus","doi":"10.1109/ELINSL.2006.1665284","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665284","url":null,"abstract":"The goal of this paper is to study the influence of the chemical crosslinking of polyethylene on the water tree initiation and propagation in polymer insulation. For this, the water tree resistances of crosslinked and thermoplastic low density polyethylene were compared. Three types of crosslinked polyethylene systems were evaluated: one containing only peroxide and the other two having, beside peroxide, a free retarding additive system. The results were compared with those obtained on their thermoplastic correspondents. The data show that there are differences in both the water tree length and density that can be ascribed to the polyethylene systems. However, only differences in the water tree density could be ascribed to the material form (thermoplastic or crosslinked). The observed results are consistent with differences, on microscopic level, in permittivities and local breakdown strengths","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114177166","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
Direct relationship between breakdown strength and tracking index of composites 复合材料的击穿强度与跟踪指数有直接关系
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665255
S. F. Madsen, J. Holbøll, M. Henriksen
{"title":"Direct relationship between breakdown strength and tracking index of composites","authors":"S. F. Madsen, J. Holbøll, M. Henriksen","doi":"10.1109/ELINSL.2006.1665255","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665255","url":null,"abstract":"The following paper shows a clear correlation between the measured tracking index and the breakdown field strength for noncoated glass fibre reinforced polymers (GFRP) with either a polyester or an epoxy based resin. 17 types of specimens have been tested according to IEC Publication 60587. The breakdown field strength of specimens cut from similar samples is determined by a new method capable of estimating the stressed volume. The results from the two tests are finally compared and incorporated in a single analytical formula. All test specimens are supplied by Danish manufacturers of wind turbine blades and are made under similar conditions and with the same materials and additives as used in the blade manufacture","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117127417","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
Influence of the electrodes coating with thin layers on the dielectric strength of transformer oils 薄层电极涂层对变压器油介电强度的影响
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665294
A. Beroual, J. Fleszyński
{"title":"Influence of the electrodes coating with thin layers on the dielectric strength of transformer oils","authors":"A. Beroual, J. Fleszyński","doi":"10.1109/ELINSL.2006.1665294","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665294","url":null,"abstract":"This work is aimed at the influence of electrodes coating with thin layers of polytetrafluoroethylene (Teflon) on the dielectric strength of transformer oils. It's shown that such a deposit on the electrodes enables one to improve significantly the dielectric strength, under AC voltage, of fresh mineral oil as well as oils containing products of decomposition resulting from electrical discharges. The influence of coating is all important as the radius of the sphere electrode is small. On the other hand, in presence of particles (impurities), the electrode coating enables to reduce the local electric field in the vicinity of particle and hence to avoid micro-discharges which can be initiated between the metallic electrodes and these particles","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126432537","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: 0
Optimization techniques on permittivity distribution in permittivity graded solid insulators 介电常数梯度固体绝缘子介电常数分布优化技术
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665370
H. Okubo, H. Shumiya, M. Ito, K. Kato
{"title":"Optimization techniques on permittivity distribution in permittivity graded solid insulators","authors":"H. Okubo, H. Shumiya, M. Ito, K. Kato","doi":"10.1109/ELINSL.2006.1665370","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665370","url":null,"abstract":"We have proposed a new concept for solid insulation; an application of FGM (functionally graded materials). By controlling the distribution of dielectric permittivity inside solid insulators, we can achieve the efficient field control with keeping simple configuration of solid insulators. In this paper, we described a computer-aided optimization technique for the FGM solid insulators. By controlling the filler particle concentration in the matrix, an optimized field distribution is obtained. From the calculation results, we confirmed that the proposed optimization method could obtain novel distributions of permittivity, which have the highest performance of the field control effect. Finally, we could confirm the significant effect of FGM application for gas/solid composite insulation system","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131139254","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: 27
Use of nano-silica in silicone rubber for ceramic insulators coatings in coastal areas 硅橡胶中纳米二氧化硅在沿海地区陶瓷绝缘子涂层中的应用
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665359
Luiz H. Meyer, Sérgio H. L. Cabral, Edson Araújo, Graziano Cardoso, Niklas Liesenfeld
{"title":"Use of nano-silica in silicone rubber for ceramic insulators coatings in coastal areas","authors":"Luiz H. Meyer, Sérgio H. L. Cabral, Edson Araújo, Graziano Cardoso, Niklas Liesenfeld","doi":"10.1109/ELINSL.2006.1665359","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665359","url":null,"abstract":"Nano-silica and micro-silica particles were mixed with silicone rubber. The resulting materials were compared with respect to erosion damage in inclined plane, and surface roughness and contact angle of virgin samples. Results have shown that nano-silica filled room temperature vulcanized (RTV) silicone rubber (SR) has higher erosion resistance than micro-silica filled RTV SR. The measurement of the contact angle of virgin samples has shown slightly lower hydrophobicity for the nano-silica filled samples than micro-silica filled samples. Surface roughness in nano-silica filled samples is lower than micro-silica filled samples, and one could expect less contamination accumulation of such nano-silica filled RTV SR materials. These preliminary laboratorial results indicate that the nano-silica filled RTV SR is better suited for contaminated environments than micro-silica filled RTV SR","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115902725","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: 20
Class F at Class B Temperatures Is it time for a change? 是时候换换了吗?
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665243
D. Wallis
{"title":"Class F at Class B Temperatures Is it time for a change?","authors":"D. Wallis","doi":"10.1109/ELINSL.2006.1665243","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665243","url":null,"abstract":"Class F insulation materials have usually been operated at Class B temperatures since their introduction in the early 1970s. Extensive testing and service experience appears to show that there is no reason for this reluctance to fully utilize the capability of the insulation. Experience with the latest types of generators indicates that perhaps this caution is still justified","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"262 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122695902","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: 0
Investigation of the influence of different parameters on maximum electric field intensity in a distribution surge arrester 不同参数对配电避雷器最大电场强度影响的研究
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665321
M. R. Meshkatoddini
{"title":"Investigation of the influence of different parameters on maximum electric field intensity in a distribution surge arrester","authors":"M. R. Meshkatoddini","doi":"10.1109/ELINSL.2006.1665321","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665321","url":null,"abstract":"In this paper the electric field in a distribution zinc oxide arrester, just at the first instant of incidence of a surge, is studied and the influence of different parameters on its maximum intensity is being verified. By axisymmetric modeling we study the effect of several characteristics, such as the geometry and the structure of the arrester housing, materials used in the arrester, humidity penetrated into the housing, etc. We see that the geometry and the materials both have influence in this concern, but the water ingress has the greatest role","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126068171","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: 0
Deterioration of internal interfaces between silicone and epoxy resin 硅树脂和环氧树脂之间的内部界面变质
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI: 10.1109/ELINSL.2006.1665372
J. Andersson, H. Hillborg, S. Gubanski
{"title":"Deterioration of internal interfaces between silicone and epoxy resin","authors":"J. Andersson, H. Hillborg, S. Gubanski","doi":"10.1109/ELINSL.2006.1665372","DOIUrl":"https://doi.org/10.1109/ELINSL.2006.1665372","url":null,"abstract":"Interfacial defects, such as loss of adhesion together with environmental effects, such as moisture intrusion into the defect, can cause interfaces to become weak points in an insulation system. Silicone rubber moulded onto internal epoxy components is commonly used in high voltage outdoor composite insulation systems. For evaluating the interfacial properties of such a material combination, samples containing interfacial defects were prepared. In the samples a transparent silicone rubber was moulded onto a primer pre-treated epoxy substrate, while the spots to be characterized by a loss of adhesion were left unprimed. In this way air-filled defects between the two materials were created. The samples were thereafter exposed to an electric aging test with a needle-ring electrode arrangement attached to them. The electrode arrangement provided stress characterized by a high content of tangential field component along the interface and the field strength at the needle tip was kept at high enough level to maintain corona discharge activity. The ageing was performed under normal and humid conditions. The latter was performed to secure moisture ingress into the interface area through the silicone rubber. After the testing, the defect surfaces were analysed chemically to investigate reactions involved in the ageing processes. In addition, optical microscopy was used to evaluate a risk for void growth, which could potentially be caused by hydrolysis of the primer. The defect area was chemically evaluated by infrared spectroscopy","PeriodicalId":427638,"journal":{"name":"Conference Record of the 2006 IEEE International Symposium on Electrical Insulation","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126839266","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
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