2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena最新文献_第3页

DC surface flashover characteristics on polyimide under different temperature in vacuum 真空中不同温度下聚酰亚胺直流表面闪络特性

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748278

Zhenjun Zhang, Xiaoquan Zheng, Wenbin Wu, Pei Yang, Ping Peng

引用次数: 2

Effect of reverse polarity on space charge evolution in polypropylene with different concentration of natural and synthetic nano clay 反极性对天然和合成纳米粘土不同浓度聚丙烯中空间电荷演化的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748241

M. Abou-Dakka, Yaoren Chen

{"title":"Effect of reverse polarity on space charge evolution in polypropylene with different concentration of natural and synthetic nano clay","authors":"M. Abou-Dakka, Yaoren Chen","doi":"10.1109/CEIDP.2013.6748241","DOIUrl":"https://doi.org/10.1109/CEIDP.2013.6748241","url":null,"abstract":"Space charge evolution in Polypropylene (PP) loaded with two types of nanoparticles, synthetic and natural clay were investigated using weekly reversing polarity. The space charges were measured with the PEA technique after certain periods of poling with both polarities. The charge distribution in the host materials was substantially smaller with reverse polarity compared to single negative polarity. This majority of charge injected with single polarity is likely due to compatibilizers, which are polar materials. The apparent charges due to dipoles are neutralized when the field is inversed and the remaining charges that fall in deep traps require more than ± 25 kV/mm to be released. To obtain and maintain space charge suppression for both polarities the nanoclay concentration in PP should be below the percolation threshold and ensure uniform distribution of nano-particles throughout polymer matrix. The PNC with 2-wt% of synthetic clay stores lots of charges with reverse polarity, especially after the end of the positive periods. So the synthetic PNC with 2-wt% will not be an optimal concentration. It is seen that 4-wt% (PP1-S4%) for the synthetic PNC and the 2-wt% (PP2-N2%) for the natural PNC are the optimal PNC concentrations. They store minimal charge, particularly in central zones. The absolute value of charge with reverse polarity of all the filled and unfilled materials could store charges relatively of same order. The quantity of charge in the unfilled material, PP1-0% shows continuous increase of charges and it becomes higher than the filled PNC, (except the PP1-S2%), after the 1st W of single polarity poling and the 12th W of reverse polarity poling. But the quantity of charge in the natural PNC was small and unaffected by the loading with nanoclay. Therefore, more poling time is necessary to examine the effect of long term poling on the charge evolution as we have reported earlier for single poling.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114288107","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: 9

Gas generation properties of oil-paper insulation under pulsating voltage 脉动电压下油纸绝缘的产气特性

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748161

Lianwei Bao, Jian Li, Xiao Lei, P. Sun, Jin Zhang

引用次数: 1

Effect of electrode material on space charge behavior in epoxy resin 电极材料对环氧树脂空间电荷行为的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6747435

Peng Liu, Z. Xiang, X. Ning, Hua Feng, Zongren Peng

引用次数: 10

Influence of interfacial condition between film and lower electrode on space charge measurement 膜与下电极界面条件对空间电荷测量的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6747102

Y. Murakami, T. Sugiyama, R. Funo, M. Fukuma, M. Nagao

引用次数: 4

Influence of water on PE — SiO2 nanocomposites dielectric properties 水对PE - SiO2纳米复合材料介电性能的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748159

H. Couderc, É. David, M. Frechette, A. Medjdoub

引用次数: 3

Evaluation of novel impulse voltage generator for detecting partial discharge 检测局部放电的新型脉冲电压发生器的评价

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748143

T. Ueno, Hirotaka Nakaya, M. Kozako, M. Hikita, T. Ikegami, T. Sakurai, H. Ogawa, T. Kisakibaru, S. Yamada, T. Yoshimitsu, T. Hirose, S. Hiroshima

引用次数: 6

Study on AC Contamination Performance and its Altitude Correction Factor of Long String Insulators 长串绝缘子交流污染性能及其高度修正系数研究

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748337

W. Xiaodong, Xu Tao, Lin Qin, Nan Jing

{"title":"Study on AC Contamination Performance and its Altitude Correction Factor of Long String Insulators","authors":"W. Xiaodong, Xu Tao, Lin Qin, Nan Jing","doi":"10.1109/CEIDP.2013.6748337","DOIUrl":"https://doi.org/10.1109/CEIDP.2013.6748337","url":null,"abstract":"In order to provide a scientific reference for the constructions of AC transmission lines in high altitude areas, studying the contamination flashover performance of long string insulators at different altitude is necessary. In this paper, artificial pollution tests for double sheds porcelain insulator (XWP2-300) at simulated high altitude were performed in large artificial climate laboratory. Solid layer method was used and 50 % withstand voltage (U50%) were determined by the up-and-down method, then the flashover performance and the altitude correction factor of flashover voltage are obtained. The flashover performance of insulator at simulated high altitude is analyzed. It is shown that the relationship between U50% and SDD at different high altitudes can be expressed with the same equation, U50% as a function of insulator length is nonlinear when the length exceeds 5m, and U50% flashover strength is almost the same for different string configurations. The influences of SDD, insulator length, and string configuration on altitude correction factor were analysed. It is shown that altitude correction factor will be smaller with the increase of SDD, the altitude correction factors of different insulator length are approximately the same, and the value of exponent n for horizontal is smaller than that for I-String.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121360266","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

Study on the extension process of AC local arc on wet contaminated insulating surface 湿污染绝缘表面交流局部电弧扩展过程的研究

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6747106

L. Yawei, Z. Qiaogen, Yang Xiaolei, Zhou Jun, Yu Xinzhe

引用次数: 0

Study on relationship between optical signals and charge quantity of partial discharge under four typical insulation defects 四种典型绝缘缺陷下局部放电光信号与电荷量关系的研究

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748175

Zhuo Ran, Tang Ju, Fan Lei, L. Yonggang, Z. Xiaoxing

{"title":"Study on relationship between optical signals and charge quantity of partial discharge under four typical insulation defects","authors":"Zhuo Ran, Tang Ju, Fan Lei, L. Yonggang, Z. Xiaoxing","doi":"10.1109/CEIDP.2013.6748175","DOIUrl":"https://doi.org/10.1109/CEIDP.2013.6748175","url":null,"abstract":"In order to solve the problem of the optical method for detecting partial discharge (PD) in the electric equipment in quantity, the integral value of the signals from the optical method has been analyzed to reflect naturally the energy of light released by PD from the principle of the optical method, then a linear relationship between the integral value and the charge quantity of PD has been deduced to give a guidance to detect charge quantity of PD in Gas Insulated Switchgear (GIS). Afterwards, as the result of PD experiments on four typical insulation defects in GIS based on optical method coupled with impulse current method, the relationship between the average integral value of signal of the optical and the average apparent charge quantity presented linear. However, the relation curve of different defects might be distinct as the PD properties under different defects were distinct. Besides, the distance between two electrodes would also influent the linear relation. The longer the two electrodes separate, the greater the slope of the relation curve would be. Therefore, PD charge quantity might be calculated through optical signal when the defect type could be assured. Results all above shows that the type and level of PD could be determined using the optical method, hence the PD online monitoring and fault diagnosis based on the optical method is feasible.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116490092","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: 8