2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena最新文献_第6页

Partial Discharge Measurement in Low Voltage Cable Diagnostics 低压电缆诊断中的局部放电测量

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772916

Z. A. Tamus, R. Cselkó, I. Berta

引用次数: 5

Space Charge Profile of TR-XLPE Cables Aged Under Multiple Stresses 多重应力老化TR-XLPE电缆的空间电荷分布

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772901

J. Ramirez, J. Sanz, E. da Silva, M. Martínez, J. Rodriguez

{"title":"Space Charge Profile of TR-XLPE Cables Aged Under Multiple Stresses","authors":"J. Ramirez, J. Sanz, E. da Silva, M. Martínez, J. Rodriguez","doi":"10.1109/CEIDP.2008.4772901","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772901","url":null,"abstract":"In this paper the space charge distribution profile along the thickness of tree-retardant crosslinked polyethylene (TR-XLPE) cables, commonly used in medium voltage system and degraded under multiple factors as temperature, AC and impulse voltages are presented. A comparison of the space charge distribution along the insulation thickness (radial direction) of samples extracted from 15 kV TR-XLPE cables, 2 AWG Cu conductor, manufactured under dry curing process was done. Two 7 m long cable samples were submitted to accelerated ageing; one sample was under thermal stress and the other was under electrothermal factors combining thermal cycles with 25 kV AC voltage applied continuously and impulse voltage transients. Looking at the results it can be concluded that after the first thermal cycle the space charge is reduced in comparison with the profile of the new sample. This confirms that crosslink by-products are expelled under thermal treatments. The space charge density is higher in the central region of the insulator thickness of the new sample and aged samples as well. It is also evident that the electrothermal ageing cycle is more severe because it releases more quantity of space charge along the insulation thickness than the thermal one.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"2 1","pages":"333-336"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83836203","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

The Effect of Temperature and Humidity on Radio Interference Generated from UHV DC Transmission Lines 温度和湿度对特高压直流输电线路无线电干扰的影响

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772912

Wei Wang, Bing An, Chengrong Li, B. Luo, Xiaolin Li, Yixu Wang, Fei Fan, Boo-gen Yang

引用次数: 2

Characteristics evaluation of the Partial Arc Discharge and the Silicone Rubber surface by Dynamic Drop Test 用动态跌落试验评价局部电弧放电和硅橡胶表面特性

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772897

K. Haji, D. Shiibara, Y. Arata, T. Sakoda, M. Otsubo

引用次数: 9

Optical Emission Characteristics of Electric Discharges in Helium, Argon-Nitrogen Mixtures Under High Frequency Unipolar Voltages 高频单极电压下氦、氩、氮混合物放电的光学发射特性

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772940

K. Koppisetty, H. Kirkici

{"title":"Optical Emission Characteristics of Electric Discharges in Helium, Argon-Nitrogen Mixtures Under High Frequency Unipolar Voltages","authors":"K. Koppisetty, H. Kirkici","doi":"10.1109/CEIDP.2008.4772940","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772940","url":null,"abstract":"Partial discharges and corona are generally considered as unwanted processes in power systems as they are constant source of power loss and electrical noise (EMI). These effects can further develop into a major problem at the component level, causing insulation deterioration and component failure leading to possible electrical breakdown. The availability of switching power supplies operating at higher intermediate frequencies makes it important to consider the effects of higher operating frequencies on corona and gas breakdown in partial vacuum conditions. This work presents the breakdown characteristics of argon and argon-nitrogen / helium-nitrogen mixtures in partial vacuum conditions subject to unipolar electric fields at 20 kHz. Results of breakdown events are discussed and compared with the results of helium breakdown under similar conditions. This work also presents results of various energy transitions in argon, argon-nitrogen, and helium-nitrogen mixtures as observed from the spectra collected during the breakdown events under unipolar pulsed voltages. These studies provide initial findings on the differences in breakdown behavior between atomic and diatomic excitation processes under unipolar-repetitive pulsed fields in kHz range.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"4 1","pages":"483-485"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75223204","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

Quantification of Particulate Mixing in Nanocomposites 纳米复合材料中颗粒混合的定量研究

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772831

L. Hui, R.C. Smith, X. Wang, J. K. Nelson, L. Schadler

引用次数: 35

Evaluation of 400 kV Silicone Insulators Aged under Natural Tropical Conditions 400kv有机硅绝缘子在自然热带条件下老化的评价

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772902

J. Ramirez, E. da Silva, J.C. Rodriguez, M. Martínez

引用次数: 7

Dielectric Properties of Nanodielectrics with Inorganic Fillers 无机填料纳米介电材料的介电性能

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772905

Florin Ciuprina, I. Pleșa, P. Notingher, T. Tudorache, D. Panaitescu

{"title":"Dielectric Properties of Nanodielectrics with Inorganic Fillers","authors":"Florin Ciuprina, I. Pleșa, P. Notingher, T. Tudorache, D. Panaitescu","doi":"10.1109/CEIDP.2008.4772905","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772905","url":null,"abstract":"One of the main targets of the research in the field of polymer nanocomposite dielectrics is to obtain new materials with improved dielectric properties (resistivity, dielectric strength, permittivity and dielectric losses). In this paper the variation of the real part of the permittivity and of the loss tangent with the frequency are investigated for three formulations of nanocomposites obtained from polyethylene filled with nanoparticles of SiO2, TiO2 and Al2O3, respectively. The influence of the filler concentration (between 2 and 10 wt%) on the dielectric behavior of the nanocomposite is analyzed as well. To simulate the electrical behavior of the polymer-filler interface which might explain the experimental results a 3D electrostatic model proposed on the basis of Tanaka's multi-core model is discussed. This model allows one to study the influence of several parameters such as the nanoparticle diameter, thickness of the interface layers, concentration and permittivity of the nanoparticles or the permittivities of the interface layers, on the effective permittivity of a plane nanodielectric sample.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"38 1","pages":"682-685"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90884641","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: 44

The Electrical Behaviors of the Interface in Solid-Insulated Distribution Equipments 固体绝缘配电设备界面的电气特性

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772778

Chao Zhang, J. Kučera, R. Kaluzny

{"title":"The Electrical Behaviors of the Interface in Solid-Insulated Distribution Equipments","authors":"Chao Zhang, J. Kučera, R. Kaluzny","doi":"10.1109/CEIDP.2008.4772778","DOIUrl":"https://doi.org/10.1109/CEIDP.2008.4772778","url":null,"abstract":"Solid-insulated distribution equipment has several design advantages when considering benefits for environmental protection, maintenance-free operation, compact-design, light weight etc. In such equipment, interfaces between different solid insulating materials are generally inevitable. The interface, depending on the placement in the equipment, is not only subjected to high electric field stress perpendicular to the interface but also to electric field stress parallel to the interface. It is therefore very important to achieve an interface with robust electrical performance in both directions. In this paper, the electrical properties of the interface subjected to the parallel electric field have been investigated. Two different types of interface samples were intentionally chosen: one composed of silicone rubber and EPDM rubber - a soft-soft type interface and the other composed of silicone rubber and fiber reinforced epoxy resin - a soft-hard type interface. Samples were evaluated for leakage current and electrical breakdown behaviors. The purpose of the research is to determine if there is a significant difference in electrical performances between the two types of interface samples accordingly. The results have been discussed.","PeriodicalId":6381,"journal":{"name":"2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"27 1","pages":"690-693"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91317167","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

Effects of Mica Nanofillers on the Complex Permittivity of Polyamide Nanocomposites 云母纳米填料对聚酰胺纳米复合材料复合介电常数的影响

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI: 10.1109/CEIDP.2008.4772784

N. Fuse, H. Sato, T. Tanaka, Y. Ohki

引用次数: 3