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2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献

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A Modified Simulation Model Using FEM for Monitoring Transformer Insulation Health Under Non Uniform Aging 非均匀老化下变压器绝缘健康监测的改进有限元仿真模型
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985310
Nisha Thanua, G. Kumbhar
{"title":"A Modified Simulation Model Using FEM for Monitoring Transformer Insulation Health Under Non Uniform Aging","authors":"Nisha Thanua, G. Kumbhar","doi":"10.1109/CEIDP55452.2022.9985310","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985310","url":null,"abstract":"The effect of non uniform aging on the insulation performance of transformer oil-paper insulation has not been investigated much. In this paper, a modified simulation model is developed using COMSOL Multiphysics software, and the impact of non uniform aging on the electrical properties of insulation such as electric field, current density, and space charge density is investigated by comparing the distribution of these parameters under both uniform and non uniform aging. In comparison to uniform aging, the distribution of electric field at low frequencies under non uniform aging is mainly concentrated at the outermost solid insulation with its value decreasing from the outermost to innermost insulating paper region. Also, the flow of charge carriers and their accumulation takes place at the oil-barrier gap with severe aging. Total losses with uniform and non uniform aging are also compared indicating slightly higher losses with non uniform aging.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120961992","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
A Power Cable Thermal Aging Insulation Resistance Degradation Model 电力电缆热老化绝缘电阻退化模型
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985388
Xufei Ge, M. Given, Brian G. Stewart
{"title":"A Power Cable Thermal Aging Insulation Resistance Degradation Model","authors":"Xufei Ge, M. Given, Brian G. Stewart","doi":"10.1109/CEIDP55452.2022.9985388","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985388","url":null,"abstract":"An Insulation Resistance (IR) degradation model for a power cable under thermal aging conditions is developed. The power cable insulation is constructed from the combination of a number of small segments. Segment types are classified into two types - degraded and non-degraded according to a previously published Dichotomy model. The ratio (${mathrm {V}}_{mathrm{d}}$ of the volume of degraded segments to the total cable insulation volume is evaluated as a function of aging time and aging temperature where ${mathrm {V}}_{mathrm{d}}$ degradation is determined using the cumulative distribution function (CDF) of an exponential distribution and the Arrhenius Model. The total resistances of the power cable insulation is evaluated by summing the resistances of all segments. The relationship between the size of segments and the calculated volume IR as a function of time is investigated to establish the sensitivity of the model as a function of segment size.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125105675","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 Improvement in Electrical Properties of RTV Silicone Rubber by the Introduction of TiO₂ Nanocomposite 引入tio2纳米复合材料对RTV硅橡胶电性能的改善
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985307
Wenxin Gao, Jingrui Zhang, M. Wei, Dai Wan, Yang Wang, Yan Du
{"title":"The Improvement in Electrical Properties of RTV Silicone Rubber by the Introduction of TiO₂ Nanocomposite","authors":"Wenxin Gao, Jingrui Zhang, M. Wei, Dai Wan, Yang Wang, Yan Du","doi":"10.1109/CEIDP55452.2022.9985307","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985307","url":null,"abstract":"The room temperature vulcanized silicone rubber coating (RTV) is one of the most extensively used materials to improve the performance of composite insulator due to its preferable dielectric properties. However, the complex operating environment may lead to the degradation of RTV coating. In this paper, the effect of doping ratio of TiO2 nanoparticles on the electrical properties of RTV coatings was investigated. The TiO2 nanoparticles were modified by $gamma$-Methacryloxypropyltrim-ethoxylsilane (KH570) and then added to the RTV composites with different doping ratios. The morphology, chemical structure and dispersity of the modified TiO2 were measured with SEM and Fourier FTIR methods. In addition, the characteristic of surface potential attenuation and flashover voltage of the TiO2/RTV composite materials were studied systematically. The results showed that TiO2 nanoparticles were uniformly dispersed in RTV coating and the -CH2-, Si-O-C and other functional groups were grafted on the TiO2 successfully. Besides, the number of surface deep traps increased due to the TiO2, nanoparticles which increased the flashover voltage of composite polymers. Based on the experiment, it was verifed that the addition of 3wt% TiO2/RTV composite could be an attractive approach to improve the electrical properties.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131706676","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
Temperature Distribution Simulation in an MV Switchgear Bus Bar Chamber 中压开关柜母线室温度分布仿真
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985350
Mijodrag Miljanovic, Martin Kearns, Brian G. Stewart
{"title":"Temperature Distribution Simulation in an MV Switchgear Bus Bar Chamber","authors":"Mijodrag Miljanovic, Martin Kearns, Brian G. Stewart","doi":"10.1109/CEIDP55452.2022.9985350","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985350","url":null,"abstract":"Temperature is one of the main contributors for the decrease of switchgear insulation withstand capability and life expectancy. Unattended temperature rise can lead to overheating of switchgear insulation causing insulation breakdown and hence switchgear outage. This work presents a simulation investigation of how temperature hot spots may be detected by studying the surface temperature distribution along a switchgear bus bar chamber wall. A three-dimensional (3-D) finite element method (FEM) MV switchgear bus bar chamber is created. The heat dissipation caused by bus bar load currents and thermal localized hot spots caused by increased contact resistances is investigated. It is shown that it may be possible to detect inner hot spots on the surface of switchgear chamber walls. It is also shown that the coating and the emissivity factor of the walls have a significant influence on the detected surface temperature.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133979049","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
Effects of Volatile Compounds on Breakdown Field Strength Measurements of Polymers 挥发性化合物对聚合物击穿场强测量的影响
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985347
Megan Loveland DeWaal, J. R. Dennison
{"title":"Effects of Volatile Compounds on Breakdown Field Strength Measurements of Polymers","authors":"Megan Loveland DeWaal, J. R. Dennison","doi":"10.1109/CEIDP55452.2022.9985347","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985347","url":null,"abstract":"This study investigates the effects of absorbed water and volatile compounds on measurements of the electrostatic breakdown field strength. Comparisons are made between sets of pristine samples, ones that underwent a thorough vacuum bake out, and ones subsequently exposed to humid conditions to determine how quickly the samples reverted to an unbaked state. Specifically, we compared signatures related to electrostatic breakdown (electrostatic breakdown field strength, frequency of pre-breakdown arcing, and flashover) and images of the arc damage sites. The work reports results for three prototypical polymeric dielectric materials: low density polyethylene (LDPE), polyether-etherketone (PEEK), and Nylon 66, listed in order of decreasing hydrophobicity. Electrostatic breakdown strength was seen to change linearly with effective exposure time; hydrophobic LDPE and intermediate PEEK increased, while more hydrophilic Nylon 66 decreased. Similar trends were observed for the number of pre-breakdown arcs (DC partial discharges) versus effective exposure time.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134551823","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 Aging on the Dielectric Performance of Synthetic Ester-based Nano-oils 老化对合成酯基纳米油介电性能的影响
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985379
A. A. Khan, Suhaib Ahmad Khan, M. Tariq
{"title":"Effect of Aging on the Dielectric Performance of Synthetic Ester-based Nano-oils","authors":"A. A. Khan, Suhaib Ahmad Khan, M. Tariq","doi":"10.1109/CEIDP55452.2022.9985379","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985379","url":null,"abstract":"The service life of a transformer primarily depends upon the aging characteristics of the insulating material. This study is performed to enhance the anti-aging ability and dielectric performance of synthetic esters using nanoparticles. Synthetic ester is basically emerging liquid insulation for transformers. The experiment for accelerated aging is performed on a thermal aging setup that provides an oxidative environment similar to a transformer. Three different concentrations of ZnO and CuO nanoparticles are used to prepare nanofluids using a two-step method. The AC breakdown test is performed according to IEC-60156 experimental standards. The dissipation factor and resistivity of oils are determined according to the IEC-60247 testing standard. A comparison of un-aged synthetic esters with aged nanofluids is performed. The nanofluids show significant changes in AC breakdown voltages. However negative influence on the dielectric property was observed due to dielectric losses associated with synthetic esters, which limits its application.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133835448","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
Study of the Dielectric Frequency Response of Mineral Oil on addition of Carboxylic Acids 羧酸对矿物油介电频率响应的影响
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985364
Rohith Sangineni, Niharika Baruah, S. K. Nayak
{"title":"Study of the Dielectric Frequency Response of Mineral Oil on addition of Carboxylic Acids","authors":"Rohith Sangineni, Niharika Baruah, S. K. Nayak","doi":"10.1109/CEIDP55452.2022.9985364","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985364","url":null,"abstract":"Mineral oil is one of the insulation bridges used in transformer alongside the solid insulation. The degradation of the cellulose solid insulation leads to the formation of low molecular weight carboxylic acids, whereas the degradation of oil insulation leads to the formation of high molecular weight acids. These acids in the presence of moisture, oxygen and heat, further degrades the solid liquid insulation system leading to the unanticipated failure of the high voltage equipment. This paper studies the effect of each acid individually on the liquid insulation using frequency domain spectroscopy. The frequency response of the fresh and acid contaminated mineral oil is studied from 10kHz to 1mHz. The results show dielectric frequency response depend on the type of acid. The frequency response of individual acid supplemented oil insulation gives information on the effective change of the electric characteristics of oil such as dielectric permittivity, impedance, capacitance, and dissipation factor with respect to acid type.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115234901","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
Effect of pulse voltage slew rate on the uniformity of polypropylene surface hydrophilic modification by nanosecond pulsed dielectric barrier discharge 脉冲电压转换率对纳秒脉冲介质阻挡放电聚丙烯表面亲水性改性均匀性的影响
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985297
Shuhao Li, Yanbo Ding, Yulei Zhao, Junxian Yu, Feng Liu, Z. Fang
{"title":"Effect of pulse voltage slew rate on the uniformity of polypropylene surface hydrophilic modification by nanosecond pulsed dielectric barrier discharge","authors":"Shuhao Li, Yanbo Ding, Yulei Zhao, Junxian Yu, Feng Liu, Z. Fang","doi":"10.1109/CEIDP55452.2022.9985297","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985297","url":null,"abstract":"To improve the hydrophilicity of polypropylene (PP) surface and the uniformity of the treatment effect, the nanosecond pulsed nitrogen dielectric barrier discharge (DBD) is used to process PP surface. The discharge characteristics of the DBD with different pulse rise times (from 50 ns to 500 ns) are investigated by electrical and optical diagnostic methods and the corresponding treatment effect and uniformity of the treated PP surfaces are characterized by measuring the value and radial distribution of the water contact angle (WCA) cross the PP surface. The results show that when the pulse rise time is 50 ns, not only the discharge become more uniform but also the emission spectral intensity is higher compared to other conditions. For hydrophilic modification effect, as the pulse rise time increases from 50 ns to 500 ns, the WCA average values changes from 47° to 55°. And for the uniformity of the PP surface treatment, the results show that the uniformity of the DBD-treated PP surface under 50 ns pulse rise time (3° variation). The faster pulse voltage slew rate enhances the reduced field in discharge space and promote the electron avalanche fusion, which leads to better discharge and treatment uniformities.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117112571","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
Enhancement on Temperature Stability of Piezoelectricity of P(VDF-TrFE) via Blending 共混增强P(VDF-TrFE)压电性温度稳定性的研究
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985290
Ji Xiaoyu, Liu Yongbin, Yuan Ni, Xi Baofeng, Gao Jinghui, Zhong Lisheng
{"title":"Enhancement on Temperature Stability of Piezoelectricity of P(VDF-TrFE) via Blending","authors":"Ji Xiaoyu, Liu Yongbin, Yuan Ni, Xi Baofeng, Gao Jinghui, Zhong Lisheng","doi":"10.1109/CEIDP55452.2022.9985290","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985290","url":null,"abstract":"In this paper, The main work is to prepare piezoelectric films via blending Poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) with four different mass ratios of ploy(methyl-methacrylate) (PMMA), thereby improving the temperature stability of piezoelectricity. First, through the Dynamic mechanical analysis (DMA) test, it can be seen that the compatibility of the two polymers is good, and the glass transition temperature is increased with the increase mass of PMMA. Then, the changes of various parameters of the piezoelectric film were analyzed by X-Ray Diffraction (XRD), Impedance analyzer, hysteresis loop and other related experiments. Finally, the vary of piezoelectric constant with temperature was measured after the blend film was polarized. The temperature stability of the piezoelectric constant is remarkably enhanced with PMMA though the dielectric constant and piezoelectric constant show slightly reduced, which should be ascribed to the rigid structure origin from spatial confinement effect.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123053167","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 Voltage Level on the Performance of Silicone Rubber in the Inclined Plane Tracking and Erosion Test 斜面跟踪冲蚀试验中电压水平对硅橡胶性能的影响
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985319
Basharat Mehmood, R. Ghunem, Ayman H. El-Hag, Mohammad K. Hassan, L. Al-Sulaiti, Ahmed A Abdala
{"title":"Effect of Voltage Level on the Performance of Silicone Rubber in the Inclined Plane Tracking and Erosion Test","authors":"Basharat Mehmood, R. Ghunem, Ayman H. El-Hag, Mohammad K. Hassan, L. Al-Sulaiti, Ahmed A Abdala","doi":"10.1109/CEIDP55452.2022.9985319","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985319","url":null,"abstract":"This paper investigates the effect of the test voltage level on the performance of silicone rubber in inclined plane tracking and erosion test. Silicone rubber composites, filled with either alumina tri-hydrate or ground silica to 30 wt% or 50 wt%, are tested in inclined plane tracking and erosion test under 2.5 kV, 3.5 kV, and 4.5 kV. The degradation patterns of the tested silicone rubber surfaces are found dependent on the test voltage level during the inclined plane tracking and erosion test, as the dry-band arcing on silicone rubber tends to form tracks under relatively mild test voltages and deep erosion under the critical test voltage. These findings confirm the importance of employing the critical voltage while evaluating the erosion resistance of silicone rubber in the inclined plane tracking and erosion test. In addition, the critical test voltage of silicone rubber is found dependent on the amount of filler added to the composite.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"17 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123609346","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
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