2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena最新文献_第7页

The Influence of Organic Acid on Thermal Aging of Power Transformer Oil-paper Insulation 有机酸对电力变压器油纸绝缘热老化的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748119

Cui Yunguang, Wu Guangning, Wang Xiaojian, Peng Qian, Chen Ling, G. Bo

引用次数: 8

Thermal in situ reduction of graphene oxide in epoxy-based nanodielectrics: Influence on dielectric properties 环氧基纳米电介质中氧化石墨烯的原位热还原:对介电性能的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748226

P. Mancinelli, T. Heid, D. Fabiani, A. Saccani, M. Toselli, M. Frechette, S. Savoie, É. David

引用次数: 9

The relationship between dielectric properties and nanoparticle dispersion of nano-SILICA/Epoxy composites 纳米二氧化硅/环氧复合材料介电性能与纳米颗粒分散的关系

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748293

Mingze Gao, Peihong Zhang, Feifeng Wang, Lin Li, Zhongyuan Li

引用次数: 4

DC field measurements around a cable end 电缆端头周围的直流磁场测量

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748310

M. Saltzer, B. Kallstrand, K. Johansson, D. Borg, J. Schiessling, C. Doiron

引用次数: 2

Space charge accumulation and electric breakdown in XLPE under DC high electric field 直流强电场作用下交联聚乙烯的空间电荷积累与电击穿

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6747415

H. Suzuki, Ando Nozomu, H. Miyake, Y. Tanaka, T. Maeno

{"title":"Space charge accumulation and electric breakdown in XLPE under DC high electric field","authors":"H. Suzuki, Ando Nozomu, H. Miyake, Y. Tanaka, T. Maeno","doi":"10.1109/CEIDP.2013.6747415","DOIUrl":"https://doi.org/10.1109/CEIDP.2013.6747415","url":null,"abstract":"We have observed space charge profiles using the PEA (pulsed electro-acoustic) system in low density polyethylene (LDPE) and cross-linked polyethylene (XLPE) under high electric dc field to study a relationship between space charge behavior and dielectric breakdown. XLPE, which is used as an insulating material of ac power cable, is also expected to be applied as the insulating layer of DC long distance power cable. To apply the polymeric materials for the insulating layer of a dc power cable, it is necessary to understand the \"space charge\" effect under high dc stress. In our previous research works, we have found that a large amount of, so called, packet-like charge generates in LDPE under dc high electric field of more than 100 kV/mm and it enhances the electric field locally in balk of the sample, and finally it leads a breakdown. On the other hand, such breakdown process has not been reported for XLPE yet. Because it was difficult to get a thinner XLPE sample as LDPE was. However, since we need to understand the relationship between the space charge and the breakdown in XLPE, we tried to measure them using specially arranged PEA system for high voltage application. In this report, we investigate the space charge formation and electric breakdown characteristics in XLPE. As the results, it is found that the relationship between the space charge and the breakdown in XLPE is completely different from that in LDPE. Since the XLPE was chemically made from LDPE using cross-linked agent at high temperature. It is assumed that the breakdown strength in XLPE is strongly affected by both of the residues of the cross-linking by products and the heat history.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"10 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":"114245401","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

Research on interface modification and electrical tree of PE/MMT composites PE/MMT复合材料界面改性及电树研究

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6747428

X. Chi, Junguo Gao, Jiahui Guo, Guowei Zheng, Xiaohong Zhang

{"title":"Research on interface modification and electrical tree of PE/MMT composites","authors":"X. Chi, Junguo Gao, Jiahui Guo, Guowei Zheng, Xiaohong Zhang","doi":"10.1109/CEIDP.2013.6747428","DOIUrl":"https://doi.org/10.1109/CEIDP.2013.6747428","url":null,"abstract":"The phenomenon of electrical tree in polyethylene affects its service life and application in widely field. Our previous research works have showed that montmorillonite (MMT) introduced can improve electrical tree performance of polyethylene. In the present paper, organic processing methods by using intercalation agent and coupling agent are selected to modify spacing between laminar layers and surface characteristic of nano-montmorillonite. Polyethylene/nano-montmorillonite (PE/MMT) composites are prepared via melting intercalation method, the organic MMT content is 0.5%, 1%, 3%, and 5% in mass fraction respectively. It can be observed that infrared absorbance peaks of PE/MMT reduce by Fourier transform infrared spectrum (FTIR) due to hydrogen bonds formed between organic MMT and PE. The space charge characteristic and electrical tree properties of PE and PE/MMT are investigated. The test results reveal that the interfacial charge peak improved near cathode and internal space charge accumulation decreases obviously in PE/MMT composite. When content of organic montmorillonite is 0.5%, the PE/MMT composite has the minimum length and maximum density of electrical trees. Establish a model which can express the propagation of electrical tree in composite with layered inorganic filler simply, according to the testing results.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"1 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":"115766201","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

Influence of temperature on developing process of surface flashover in oil-paper insulation under combined AC-DC voltage 交直流复合电压下温度对油纸绝缘表面闪络发展过程的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748251

Yuanxiang Zhou, F. Jin, Meng Huang, Y. Sha, Ling Zhang, Jianwen Huang

{"title":"Influence of temperature on developing process of surface flashover in oil-paper insulation under combined AC-DC voltage","authors":"Yuanxiang Zhou, F. Jin, Meng Huang, Y. Sha, Ling Zhang, Jianwen Huang","doi":"10.1109/CEIDP.2013.6748251","DOIUrl":"https://doi.org/10.1109/CEIDP.2013.6748251","url":null,"abstract":"In order to study the influence of temperature on surface flashover behavior with oil-paper interface under combined AC-DC voltage, a discharge test assembly was established to investigate the influence of temperature on developing process of surface flashover of oil-paper interface from 25 °C to 90 °C. Based on impulse current method, the process of surface flashover of oil-paper interface under combined AC-DC voltage was studied by electrodes configurations that simulated the tangential electric field and radial electric field of surface of pressboard, in which the voltage was increased step-by-step. Meanwhile the partial discharge (PD) spectrums at whole flashover stages were studied. Moreover, high speed camera was used to record the whole process of surface flashover which was divided into 4 stages: (1)Inception stage, (2)Streamer stage, (3)Intermittent breakdown stage, (4) Surface flashover stage. The experiments results shown that flashover voltage and PD inception voltage at high temperature (HT) was lower than the voltage at low temperature (LT). The average amplitudes of PD at LT were lower than at HT. The growth rate and repetition rate of PD at HT was faster than at LT. It was easier to develop the flashover at oil-paper interface under combined AC and DC voltage at HT. So the flashover voltage was lower at HT. the surface of pressboard was destructed severely at HT, the track of surface discharge was obvious at HT.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"26 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":"123790114","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: 10

The frequency domain spectroscopy of natural ester and its impregnated paper insulation 天然酯及其浸渍纸绝缘的频域谱

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748338

Chen Ling, Liu Rui, Zhang Fu-zhou

引用次数: 1

Influence of proportion of vegetable insulating oil and mineral insulating oil on thermal aging of oil-paper insulation 植物绝缘油与矿物绝缘油配比对油纸绝缘热老化的影响

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748274

Baimei Wang, Jian Li, Junru Xiang, B. Du

{"title":"Influence of proportion of vegetable insulating oil and mineral insulating oil on thermal aging of oil-paper insulation","authors":"Baimei Wang, Jian Li, Junru Xiang, B. Du","doi":"10.1109/CEIDP.2013.6748274","DOIUrl":"https://doi.org/10.1109/CEIDP.2013.6748274","url":null,"abstract":"Vegetable insulating oil shows good performance in electric, high anti-aging ability and environmental protection. Thus it is considered as a promising substitute for mineral insulating oil. In order to the wide spread application of vegetable oil in large power transformers, this paper presents accelerated aging experiments of oil-paper insulation involving insulating paper and the mixed oil. The mixed oil combined with different proportion of vegetable and mineral insulating oil. The experiments were performed at 130 °C to analyze the generation principle of aging products for different types of oil-paper insulation samples. Experimental results showed that the moisture content of insulating oil and paper increased with increasing of aging time and the different proportion of vegetable and mineral insulating oil during the aging process. Besides, acid value of insulation oil increased with aging time, and acid value was related to the different proportion of vegetable and mineral insulating oil. The degree of polymerization (DP) of the insulation paper decreased with the aging time. However, the DP declining rate decreased with increasing of different proportion of vegetable and mineral insulating oil.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"26 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":"134203663","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

Space charge accumulation on multilayer graphene/epoxy nanocomposites 多层石墨烯/环氧纳米复合材料的空间电荷积累

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2013-10-01 DOI: 10.1109/CEIDP.2013.6748270

J. Castellon, S. Agnel, S. Diaham, F. Saysouk, Z. Valdez-Nava, D. Fabiani, M. Frechette

引用次数: 3