2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献_第6页

Effect of Thermo-oxidative Aging on Space Charge Characteristics and Physicochemical Properties of XLPE/Al2O3 Nanocomposites for HVDC Cables 热氧化老化对XLPE/Al2O3纳米复合材料空间电荷特性和物理化学性能的影响

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705477

Dao-Sheng Chen, Youxiang Yan, Zijun Xu, Yiwei Long, Wangbin Luo, Jianying Li

{"title":"Effect of Thermo-oxidative Aging on Space Charge Characteristics and Physicochemical Properties of XLPE/Al2O3 Nanocomposites for HVDC Cables","authors":"Dao-Sheng Chen, Youxiang Yan, Zijun Xu, Yiwei Long, Wangbin Luo, Jianying Li","doi":"10.1109/CEIDP50766.2021.9705477","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705477","url":null,"abstract":"Cross-linked polyethylene (XLPE) nanocomposites show the potential to be insulating materials for high-voltage direct current (HVDC) cables because of their improved electrical properties. However, the role of nanoparticles on the thermal aging properties of cable insulation is still unclear. In this paper, the influence of thermo-oxidative aging on the space charge characteristics and physicochemical properties of pure XLPE and XLPE/Al2O3 nanocomposites were comparatively investigated. Space charge accumulation characteristics, crystallinity and carbonyl index were tested by pulse electroacoustic method (PEA) system, X-ray diffraction (XRD) and Fourier-transform infrared (FTIR), respectively. It was found that appropriate number of nanoparticles can improve the crystallinity of XLPE, reduce the low-molecular impurities containing carbonyl groups generated and also has an excellent effect on limiting the injection of homo-charges during the aging process. Compared with pure XLPE, XLPE/Al2O3-A with appropriate number of nanoparticles still has excellent space charge distribution and physicochemical properties when aged for 672 hours. The dispersive interface region between nanoparticles and matrix may be the reason for the anti-thermal aging ability exhibited by the nanocomposites.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"8 1","pages":"395-398"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75500092","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

Rapid Screening of Amorphous Fluorinated Polymer Electret Based on Machine Learning 基于机器学习的非晶态氟化聚合物驻极体快速筛选

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705390

Z. Mao, Y. Zhang, K. Suzuki, C. Chen, S. Ong, Y. Suzuki

{"title":"Rapid Screening of Amorphous Fluorinated Polymer Electret Based on Machine Learning","authors":"Z. Mao, Y. Zhang, K. Suzuki, C. Chen, S. Ong, Y. Suzuki","doi":"10.1109/CEIDP50766.2021.9705390","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705390","url":null,"abstract":"In the present study, a rapid screening method of amorphous fluorinated polymer based on graph network is investigated for development of a novel electret material with high charging performance. Solid-state ionization potential (IP) of amorphous polymer is chosen as the index of charge stability, and determined by the density functional theory (DFT) in conjunction with polarizable continuum model (PCM). Surface charge density of CYTOP (Cyclic Transparent Optical Polymer) polymer with different end groups are measured both for positive and negative charging. The order of solid-state IP estimated with the present PCM/DFT is in quantitative accordance with the order of experimental data, indicating the present simulation gives appropriate quantitative estimation on the charge trapping performance of CYTOP electrets. In order to significantly reduce the heavy computational cost required by PCM/DFT and to develop a rapid screening method toward optimization of the end group for better charging performance, MatErial Graph Network (MEGNet) model is also employed for predicting the solid-state IP based on molecular structures.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"31 1","pages":"667-670"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78087913","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

Insulation Characteristics of Overhead Insulated Line Affected by Line Galloping 线路振荡对架空绝缘线路绝缘特性的影响

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705416

Zhihui Wang, Yong Liu, Hao-xiong Wang, T. Han, Y. Gao, B. Du

引用次数: 0

Partial discharges characteristics during load transients in an HVDC model cable 高压直流模型电缆负载瞬变过程中的局部放电特性

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705411

P. Romano, G. Rizzo, A. Imburgia, G. Ala, R. Candela, S. F. Bononi, M. Albertini

{"title":"Partial discharges characteristics during load transients in an HVDC model cable","authors":"P. Romano, G. Rizzo, A. Imburgia, G. Ala, R. Candela, S. F. Bononi, M. Albertini","doi":"10.1109/CEIDP50766.2021.9705411","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705411","url":null,"abstract":"The occurrence of Partial Discharges (PD) in HVAC cables is widespread considered as one of the most important concerns for the stability of the insulation. To date, the role of PD in the ageing and definitive fault of HVDC cables has been poorly investigated. This is mainly due to some practical difficulties in the performing of the measurements. Compared to the PDs occurring under AC stress, the higher inception voltages and the lower repetition rates, obtainable under DC voltage, make the exclusion of the measurement noise more difficult. This paper is focused on the study of the characteristics of the PDs occurring in an artificial defect located in proximity of the outer dielectric’ surface of an HVDC model cable. The main purpose of this research is to evaluate the PD characteristics during load transients in the proposed experimental setup. The investigation on the PD activity in an artificially defected HVDC model cable has been experimentally performed on a segment of cable 6 m long jointed and heated up by means of a current transformer. The PD activity has been measured by means of an antenna sensor during all the duration of the experiment. After a period during which no PD are detected, a PD repetition rate increasing over time has been found, attributable to the rising of the electric field intensity in proximity of the outer dielectric surface.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"75 1","pages":"631-634"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73531022","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

High Power Ultrasonic Testing Method for Agglomeration of Nanoparticles in Nanocomposite Dielectrics 纳米复合介质中纳米颗粒团聚的高功率超声检测方法

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705457

Wei Fang, Li Cheng, Hanqing Wang, Lijun Yang, R. Liao

{"title":"High Power Ultrasonic Testing Method for Agglomeration of Nanoparticles in Nanocomposite Dielectrics","authors":"Wei Fang, Li Cheng, Hanqing Wang, Lijun Yang, R. Liao","doi":"10.1109/CEIDP50766.2021.9705457","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705457","url":null,"abstract":"The high surface per unit volume of nanoparticles leads to strong attractive interaction between particles producing high agglomeration tendency [1]-[2]. The agglomeration of nano particles in the polymer will reduce the overall modification effect of the material. When the degree of agglomeration is severe, it may even cause serious deterioration of the mechanical and electrical properties of materials [3]. Electron microscope imaging is the main method to detect the dispersion of nano fillers in solid dielectrics, but this method is easily limited by the detection range, so the evaluation of the overall dispersion of materials still needs to be further explored. In this paper, according to the mechanical constitutive relationship in nanocomposite dielectrics, we first theoretically analyzed the feasibility of nonlinear acoustic detection method. Then the samples with different dispersion degree were prepared by adjusting the dispersion factors, and the feasibility of the detection method was verified by scanning electron microscope (SEM), broadband dielectric spectroscopy (BDS) and nonlinear ultrasonic test results. Finally, we use this method to detect functionally graded materials (FGM), and realize the nonlinear acoustic imaging of FGM, which provides a new way for the dispersion detection of nano materials like nanocomposite dielectric and FGM.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"69 1","pages":"347-351"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86416968","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

Development of Nano Alumina/Micro ATH Filled Silicone Elastomers for High Voltage Insulation Applications 高压绝缘用纳米氧化铝/微ATH填充有机硅弹性体的研制

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705378

P. Ashitha, S. Akhil

引用次数: 0

Experimental study of epoxy surface discharge under different frequencies 不同频率下环氧树脂表面放电的实验研究

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705381

T. Luo, W. Zhao, M. Niasar

引用次数: 1

Effect of the Aging Status on Ionization of Oil Immersed Paper 老化状态对油浸纸电离的影响

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705409

Shuangzan Ren, Jingfeng Wu, Hao Wu, Dongxin Hao, Yang Wu, Lu Gao, Z. Lv, Kai Wu

引用次数: 0

Experimental Study on the Effect of Surface Contamination on the Function of Thyristor Voltage Monitoring Board 表面污染对晶闸管电压监测板功能影响的实验研究

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705384

Zichen Liu, Yongsheng Xu, F. Yin, Bin Cao, H. Mei, Fuzeng Zhang, Yi Jiang, Liming Wang

引用次数: 0

Alternative Approach to Optical Detection of Partial Discharges in Air 空气中局部放电光学检测的替代方法

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705350

O. Šefl, R. Prochazka, R. Haller, G. Monkman

引用次数: 2