2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献

Study on High Temperature Heating Characteristics of Degraded Composite Insulators 降解复合绝缘子高温加热特性研究

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544851

Xiangyang Peng, Zhangxiang Nie, Cuiru Yang, Zhen Huang, Xinyu Huang, Zhonghao Zhang, Liming Wang

引用次数: 1

Experimental Investigation on the Influence of AC Voltage on Positive Corona Current Pulses from DC Conductor Parallel with AC Conductor 交流电压对直流导体与交流导体并联的正电晕电流脉冲影响的实验研究

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544762

Yinfei Li, Xuebao Li, Qian Zhang, T. Lu

{"title":"Experimental Investigation on the Influence of AC Voltage on Positive Corona Current Pulses from DC Conductor Parallel with AC Conductor","authors":"Yinfei Li, Xuebao Li, Qian Zhang, T. Lu","doi":"10.1109/CEIDP.2018.8544762","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544762","url":null,"abstract":"In this paper a DC conductor is set parallel with an AC conductor in the laboratory to study the influence of AC voltage on the characteristics of positive corona current pulse. The corona onset voltage of DC conductor and the detail characteristics of corona current pulses such as the rise time, the amplitude, the pulse width and the repetition frequency are systematically analyzed. It is found that the corona onset voltage of DC conductor decreases linearly with the increase of AC voltage. Due to the influence of AC voltage, the distribution of corona current pulses gradually forms into periodic clusters and the repetition frequency of the clusters is equal to the frequency of AC voltage. Meanwhile, the obtained results show that the average current amplitude decreases with the increase of separation distance, rise time increases with the increase of separation distance and the current width changes uniformly with separation distance. Meanwhile, AC voltage and the separation distance have an influence on the repetition of current pulses. Through the calculation of the average ionization boundary and ionization coefficient integration, the mechanism of the influence of AC voltage and separation distance on the corona of DC conductor is qualitatively analyzed.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125834552","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

Effect of Temperature Changes on Tine Film Sacrificial Copper Strips due to Sulfur Corrosion 温度变化对硫腐蚀时间膜牺牲铜带的影响

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544883

M. S. A. Khiar, R.C.D. Brown, P. Lewin

{"title":"Effect of Temperature Changes on Tine Film Sacrificial Copper Strips due to Sulfur Corrosion","authors":"M. S. A. Khiar, R.C.D. Brown, P. Lewin","doi":"10.1109/CEIDP.2018.8544883","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544883","url":null,"abstract":"This paper presents the characteristics of thin film copper strips due to sulfur corrosion at different temperatures. Thin film copper with a layer thickness of 200 nm was deposited onto a glass substrate using an electron beam evaporator. In order to enhance the adhesion of thin film copper on the glass substrate, titanium with a layer thickness of 5 nm was deposited prior to copper evaporation. Three dibenzyl disulfide (DBDS) concentrations were chosen to simulate the different levels of oil corrosiveness: (1) 100, (2) 250, and (3) 1000 ppm. The thin film copper strips were immersed in the corrosive oil samples and then aged in a forced convection laboratory oven at 120 and 130°C for 25 h. The copper loss due to sulfur corrosion was monitored by measuring the resistance of the thin film copper strips using the 4-wire measurement method. Based on the preliminary results, sulfur corrosion is accelerated by increasing the temperature from 120 to 130°C. The amount of copper losses from the glass substrate caused by the corrosive by-products due to the breakdown of DBDS is more pronounced at higher temperature, as evidenced from the measured resistance values.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126851422","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

Interpretation of PEA Output Signal in a Multilayer Specimen 多层试样中PEA输出信号的解释

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544911

M. de Araujo Andrade, R. Candela, L. de Rai, S. F. Bononi, A. Imburgia, E. R. Sanseverino, P. Romano, F. Viola

引用次数: 8

Effect of Electric Field on Methanol Generation in Transformer 电场对变压器甲醇生成的影响

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544786

Chong Li, Kai Wu, Zhi Li, Yong Yang, Kang Oian, Xiaohua Kang

{"title":"Effect of Electric Field on Methanol Generation in Transformer","authors":"Chong Li, Kai Wu, Zhi Li, Yong Yang, Kang Oian, Xiaohua Kang","doi":"10.1109/CEIDP.2018.8544786","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544786","url":null,"abstract":"Chemical indicators were widely used in condition assessment of transformers. Methanol is considered as a better method than furfural to assess the condition of transformer with higher detection rate and thermal stability. However, the effect of electric field on the generation of methanol still needs further investigation. In this report, insulation oil and 5mm-thick cellulose paper were put into aging cell with a weight ratio of 10:1 after degased and dehydration. Aging experiments were carried out at 120°C with and without an electric field of 2kV/mm, respectively. Degree of polymerization, concentration of methanol, furfural and ethanol dissolved in oil were measured after accelerated experiments. The concentration of methanol in oil was much higher than that of furfural at early aging while it increased with aging time. Samples aged under electric field had higher methanol concentration, and the amount of methanol was proportional to the number of scissions of cellulose chain. It was indicated that the electric field accelerated the generation of methanol by aggravating the scission of cellulose chain.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122015334","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

The Dielectric Properties of PP Nanocomposites Doped with Mesoporous Silica Nanoparticles 介孔二氧化硅纳米颗粒掺杂PP纳米复合材料的介电性能

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544907

Yang Yang, Qi Li, Jinliang He

引用次数: 2

Dielectric Properties of LDPE/MgO Nanocomposites Micro-extruded from a Masterbatch 母粒微挤压LDPE/MgO纳米复合材料的介电性能

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544891

H. Couderc, V. Griseri, É. David, D. Mary

{"title":"Dielectric Properties of LDPE/MgO Nanocomposites Micro-extruded from a Masterbatch","authors":"H. Couderc, V. Griseri, É. David, D. Mary","doi":"10.1109/CEIDP.2018.8544891","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544891","url":null,"abstract":"Nanocomposites properties are strongly linked to their micro-structure and the quality of the nanoparticles distribution inside the matrix. A good distribution is reachable at the laboratory scale, as seen in the literature, but is somewhat more challenging to reach at the industrial scale with the usual cost, safety and environmental considerations. The most convenient way to produce thermoplastic based composites at the industrial level is to start from a polymer/filler masterbatch, with an adequate, but certainly not yet optimized, particles distribution, and to improve it by the means of further melt-mixing processing. This study is focused on the properties of LDPE/MgO nanocomposites compounded by the means of different thermo-mixing treatments and the purpose is to establish an appropriate melt-mixing procedure for material development with the desired dielectric properties. Low Density Polyethylene (LDPE) was used as a matrix and was reinforced by Magnesium Oxide (MgO) particles having an average size of 30 nm. The MgO nanoparticles were either treated or untreated with a silane coupling agent (3-Glycidyloxypropyl Trimethoxysilane). The primary samples were prepared in a melt-mixing chamber with a MgO content of 1%wt. Samples with untreated MgO and pure LDPE were also prepared in a similar way for comparison purposes. These pre-mixed samples were further treated by the means of thermo-mixing treatments provided by a conical co-rotating twin-screw extruder allowing optimizing the processing parameters. The sample dispersion was subsequently evaluated by Scanning Electron Microscopy (SEM). ACBD measurements were conducted and the resistance to space charge accumulation under DC fields was evaluated using a PEA setup.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129922238","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

A Study of Breakdown Properties of HFO Gas under DC and Impulse Voltage HFO气体在直流和冲击电压下击穿特性的研究

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544877

O. Lesaint, N. Bonifaci, H. Merini, R. Maladen, F. Gentils

引用次数: 11

The Influence of Bending Stress on the Sulfur Corrosion of Copper Winding 弯曲应力对铜绕组硫腐蚀的影响

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544880

W. Chao, Yuncai Lu, Zhou Jiang, Yuan Yuan, Jiang Youdong

引用次数: 0

Low Frequency Dielectric Response of Silicone/ZrO2 Nanocomposites 硅/锆纳米复合材料的低频介电响应

2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544761

Shaohua Li, Xidong Liang, A. Prasad, L. Schadler, J. K. Nelson, Yanfeng Gao

引用次数: 1