2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena最新文献_第4页

Extraction of PD Signals from an Electro-optic Modulator Based PD Measurement System 基于电光调制器的PD测量系统中PD信号的提取

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312009

L. Hao, P. Lewin, S. Dodd

引用次数: 6

Change in Heat Resistive, Electrical Insulating and Mechanical Properties of Hybrid Made with PDMS and TEOS for the Mole Ratio of Them PDMS和TEOS的摩尔比对其耐热性、电绝缘性和力学性能的影响

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312061

T. Oakamoto, T. Shindou, M. Sugiura, S. Nakamura

{"title":"Change in Heat Resistive, Electrical Insulating and Mechanical Properties of Hybrid Made with PDMS and TEOS for the Mole Ratio of Them","authors":"T. Oakamoto, T. Shindou, M. Sugiura, S. Nakamura","doi":"10.1109/CEIDP.2006.312061","DOIUrl":"https://doi.org/10.1109/CEIDP.2006.312061","url":null,"abstract":"Heat resistive, electrical insulating and mechanical properties of hybrids made with polydimethylsiloxane (PDMS) and tetraethoxysilane (TEOS) through the sol-gel reaction method have been studied by changing the mole ratio of TEOS to PDMS. It has been found that the weight loss of the hybrids is less than 3 % regardless of the mole ratio after ageing at 200 degC for 480 h in air. The expected weight loss of the hybrids after ageing for 20,000 h at 200 degC is less than 7 %. It has been found that the elastic modulus and the stress at break of the hybrids increases with increasing the mole ratio. Those mechanical properties are improved after the ageing because of further dehydration and condensation polymerization reactions through the ageing. The volume resistivity decreases and the dielectric loss tangent increases with increasing the mole ratio. Even at the mole ratio of 10, the resistivity is in the order of 1013 ohm-m at room temperature. Relative permittivity and AC dielectric breakdown strength of the hybrids are about 3 and 25 kV/mm. respectively. After the ageing, increases of volume resistivity, relative permittivity and a decrease of dielectric loss tangent of the hybrids have been observed and AC breakdown strength of them shows little change. It has been concluded that the hybrid made with TEOS and PDMS has the potential of a higher heat resistive insulating material.","PeriodicalId":219099,"journal":{"name":"2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena","volume":"50 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":"121206465","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

Impact of the polymerization process on the electrical behavior of different impregnation varnishes 聚合工艺对不同浸渍清漆电性能的影响

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312035

F. Aymonino, T. Lebey, D. Malec, C. Petit, J. Saint Michel, A. Anton

{"title":"Impact of the polymerization process on the electrical behavior of different impregnation varnishes","authors":"F. Aymonino, T. Lebey, D. Malec, C. Petit, J. Saint Michel, A. Anton","doi":"10.1109/CEIDP.2006.312035","DOIUrl":"https://doi.org/10.1109/CEIDP.2006.312035","url":null,"abstract":"The machine thermal class is the main dimensioning factor for the insulating materials. Three main categories of insulation may be distinguished in rotating machines: namely turn to turn, turn to ground and phase to phase insulation. Nevertheless, most of the data available are given at room temperature. Little is known on their behavior versus the temperature. A better knowledge of these materials appears therefore necessary. In this paper, electrical characterizations are performed on turn to turn insulation materials. Formettes samples are realized. The enamel wire is the same for all the samples under study but different impregnation resins and the polymerization processes and mechanisms are envisaged. Conduction current measurements versus the type of impregnation varnish are presented and discussed. Changes in both transient and steady-state currents are studied versus temperature (up to 200 degC). Since most of the varnishes are synthesized with similar polymers but following different polymerization routes, the differences may been attributed to the polymerization process. Huge values of the conduction currents are measured at high temperature and are directly related to the chemistry of the polymerization process.","PeriodicalId":219099,"journal":{"name":"2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena","volume":"53 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":"116742844","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

Improved condition assessment of XLPE insulated cables using the isothermal relaxation current technique 用等温松弛电流法改进交联聚乙烯绝缘电缆的状态评定

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.311973

B. Oyegoke

引用次数: 5

Dielectric response of SRBP as a function of oil and oil/moisture absorption. SRBP的介电响应随油和吸湿率的变化。

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312037

M.A. Brown, S. Dodd, B. Ahern, J. Pettinger, F. Waite

引用次数: 2

Electrical properties analysis of nano-filled epoxy by space charge characterization 利用空间电荷表征分析纳米填充环氧树脂的电性能

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.311940

J. Castellon, S. Agnel, A. Toureille, M. Frechette, K. Cole, D. Desgagnes

{"title":"Electrical properties analysis of nano-filled epoxy by space charge characterization","authors":"J. Castellon, S. Agnel, A. Toureille, M. Frechette, K. Cole, D. Desgagnes","doi":"10.1109/CEIDP.2006.311940","DOIUrl":"https://doi.org/10.1109/CEIDP.2006.311940","url":null,"abstract":"Numerous studies have shown that the presence and/or development of electric charges within polymers affect their properties with a significant order. These charges, intrinsic or extrinsic, that are called space charges, have been first observed for polymers used for electrotechnical applications, thus, at high electric fields. In many other studies, it has been observed that space charges are present into the polymers, even if these polymers were not exposed to additional stresses other than those associated with their synthesis and making. Moreover, the increase of the space charges seems directly linked with the deterioration of the physical properties of these materials since charge trapping is mainly associated with structure defects. These defects may have several origins, namely fabrication, interfaces, and stresses applied to the material. In this work, electrical properties of epoxy microcomposites with and without nanoclay are investigated under different conditions: without initial stress, and with subsequent electrical and thermal stresses. Correlating space charge measurements obtained by the Thermal Step Method with results observed in thermally stimulated-current experiments, the nature of the observed electric charges and the influence of the nanostructures can be discussed. Results and their scattering for cases including samples with and without nanoclay point certainly at the importance of the quality of the fabrication process.","PeriodicalId":219099,"journal":{"name":"2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena","volume":"50 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":"122731524","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: 5

Piezoelectricity of a single bubble formed by two oppositely charged Teflon® -FEP films 由两个相反电荷的Teflon®-FEP薄膜形成的单个气泡的压电性

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312082

H. C. Basso, C.V. Aquino, R. Altafim, R. Altafim, R. Gerhard-Multhaupt

引用次数: 3

A method to detect the deterioration of HTV silicone rubber under corona discharge 一种检测高温硅橡胶电晕放电劣化的方法

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.311981

Ying Liang, L. Ding, C.R. Li, Kun Yang, Y. Tu

引用次数: 7

On-line time domain reflectometry measurements of temperature variations of an XLPE power cable XLPE电力电缆温度变化的在线时域反射测量

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312059

V. Dubickas, H. Edin

引用次数: 16

Oil reclamation - just a question of moisture? 石油回收-只是水分的问题?

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2006-10-01 DOI: 10.1109/CEIDP.2006.312065

P. M. Mitchinson, P. Lewin, I. Hosier, G. Chen, P. Jarman

{"title":"Oil reclamation - just a question of moisture?","authors":"P. M. Mitchinson, P. Lewin, I. Hosier, G. Chen, P. Jarman","doi":"10.1109/CEIDP.2006.312065","DOIUrl":"https://doi.org/10.1109/CEIDP.2006.312065","url":null,"abstract":"High voltage equipment (e.g. transformers and switchgear), use mineral oil and paper as a cost effective and well tried insulation medium. However, this insulation is known to age over time and usage. An obvious sign of ageing is the change in the colour of the oil which changes from pale yellow to reddish brown. This colour change can be measured by the technique of ultraviolet/visual (UV/Vis) spectroscopy. Other techniques such as acid number measurement and infrared (IR) spectroscopy can also be used as indicators of the age of the oil. In general, decisions can be taken by the operator, depending upon the results of these and other tests, as to when and how to maintain the equipment. Maintenance solutions include refurbishment of the transformer or the replacement of the mineral oil. However, these treatments are expensive and a more cost effective option is to use either oil purification or reclamation in order to cleanse the system before refurbishment becomes necessary. The question then becomes: which of these two processes is the more effective? There is little up-to-date research published on the effects of fuller's earth on transformer oil. This paper considers an experiment where aged oil is processed using fuller's earth and contrasts the results of selected ageing indicators against the known results of the oil purification process.","PeriodicalId":219099,"journal":{"name":"2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena","volume":"1 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":"117142447","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: 13