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

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Feasibility evaluation of DC extruded cable with conductor operating temperature of 90°C 导体工作温度为90℃的直流挤压电缆的可行性评价
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985355
Tao Zhu, Xiao Gu, Haiyong Long
{"title":"Feasibility evaluation of DC extruded cable with conductor operating temperature of 90°C","authors":"Tao Zhu, Xiao Gu, Haiyong Long","doi":"10.1109/CEIDP55452.2022.9985355","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985355","url":null,"abstract":"In recent years, flexible DC transmission technology has developed rapidly. In China, the rated voltage of extruded HVDC project has raised to 400kV since Dec. 9th, 2021. In order to improve transmission power more effectively and obtain higher economic benefits, the increase of voltage level and maximum conductor operating temperature will be future development trend. In this paper, the construction of ±535kV DC cable with maximum conductor operating temperature of 90 °c is introduced. The current carrying capacity of DC extruded cable is approximately calculated. The qualification process and the results of HVDC system are present. The volume resistivity parameters are obtained by testing the cable insulation slice samples under different field strengths and temperatures.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"21 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":"115667395","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
Degradation of a FR-EPDM Cable Removed from a Nuclear Power Plant 核电厂拆除的FR-EPDM电缆的劣化
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985247
Y. Ohki, N. Hirai, K. Sato, Y. Tanaka
{"title":"Degradation of a FR-EPDM Cable Removed from a Nuclear Power Plant","authors":"Y. Ohki, N. Hirai, K. Sato, Y. Tanaka","doi":"10.1109/CEIDP55452.2022.9985247","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985247","url":null,"abstract":"To evaluate the degradation degree of the flame-retardant ethylene-propylene-diene rubber (FR-EPDM) insulation of a control cable removed from a nuclear power plant operated for 23 years, the leakage current of the cable was compared with those of new and degraded cables with the same insulation, using the current integration method. As a result, it has become clear that the aging of electrical insulation should not be a concern as long as cables of the same type are used under similar environmental conditions to the removed one.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"94 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":"127489395","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: 2
Tree Growth in Epoxy Resin Under Unipolar and Bipolar Square-Wave Voltages 单极和双极方波电压下环氧树脂中的树木生长
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985261
Faisal Aldawsari, Fang Liu, H. McDonald, S. Rowland
{"title":"Tree Growth in Epoxy Resin Under Unipolar and Bipolar Square-Wave Voltages","authors":"Faisal Aldawsari, Fang Liu, H. McDonald, S. Rowland","doi":"10.1109/CEIDP55452.2022.9985261","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985261","url":null,"abstract":"The influence of DC bias on electrical tree growth under 13 kV square-wave voltages at 50 Hz in epoxy resin is investigated. Tree growth is captured in a needle-plane configuration using a CCD camera and digital microscope. Tree growth is accelerated under positive unipolar square waves in comparison with a bipolar square waves and negative square waves. Tree growth under positive and negative unipolar square wave voltages can be described as a three-stage process, while under bipolar square wave voltages tree growth follows a five-stage process. Reverse tree growth is observed before breakdown only under bipolar square waves. No reverse tree growth was seen under unipolar square waves of either polarity. Damage was observed at the bottom of the plane surface of epoxy where the reverse tree channels initiated.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"51 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":"125473773","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
Space Charge Research on Epoxy Resin Under Low Temperature and Large Thermal Gradient 低温大热梯度下环氧树脂的空间电荷研究
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985316
Jiaxi Chen, Bingjie Wang, Z. Lv, Kai Wu
{"title":"Space Charge Research on Epoxy Resin Under Low Temperature and Large Thermal Gradient","authors":"Jiaxi Chen, Bingjie Wang, Z. Lv, Kai Wu","doi":"10.1109/CEIDP55452.2022.9985316","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985316","url":null,"abstract":"The study of space charge characteristics of insulating materials under large thermal gradients is of great significance for the design of superconductive pipelines. In this work, we improve the pulsed electro-acoustic system to research the space charge characteristics of epoxy resin under a great thermal gradient of $- 150 ^{circ}text{C} sim 20 ^{circ}text{C}$. The removal of the impact by thermal gradient is completed by interpolation method using a theoretical approximation. At various voltages and different polarities, the polarization and depolarization processes reveal the low injection of electrodes and the low mobility of carriers at low temperatures. The comparison of space charge results between room temperature and thermal gradient shows that a large number of bipolar carriers may be hidden in the sample at room temperature.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"16 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":"115249013","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
Mechanical Properties Of Epoxy-Bonded Continuously Transposed Conductors(CTCs) at High Temperature and its Influence on Mechanical Strength of Windings 环氧键合连续转置导体(ctc)高温力学性能及其对绕组机械强度的影响
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985276
Xiaoyu Zhu, J. Zhan, Lingfeng Jin, Zhi Yang, Suning Liang, Fan Zhang, S. Ji
{"title":"Mechanical Properties Of Epoxy-Bonded Continuously Transposed Conductors(CTCs) at High Temperature and its Influence on Mechanical Strength of Windings","authors":"Xiaoyu Zhu, J. Zhan, Lingfeng Jin, Zhi Yang, Suning Liang, Fan Zhang, S. Ji","doi":"10.1109/CEIDP55452.2022.9985276","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985276","url":null,"abstract":"Epoxy-bonded continuously transposed conductors (CTCs) can enhance windings’ short circuit strength due to the bunch of conductors are bonded by epoxy coating. However, the coating’s bonding strength decrease with the increasing temperature and consequently reduce the mechanical strength of CTCs. This paper analyzes the change of CTCs mechanical strength with temperature. The tensile test explored the elastic modulus and yield strength of copper conductor. The adhesive strength of self-adhesive paint was investigated by adhesive test. The bending strength of CTCs was investigated by three-point bending test. We calculated the elastic modulus of self-adhesive paint by finite element model. Based on the existing winding critical load calculation equations, we calculate the elastic modulus and moment of inertia of CTCs at different temperatures. And we calculate the winding critical load equation with the influence of temperature. The research content has certain significance for improving the short-circuit withstand capacity of transformer.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"38 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":"122427428","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
3D Reconstruction of TiO2/Epoxy Nanocomposite for Evaluation of Agglomerate Disruption Effect TiO2/环氧纳米复合材料的三维重建及其团聚破坏效果评价
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985330
Kazuma Tagawa, M. Kurimoto, T. Sawada, S. Yoshida, T. Umemoto, T. Mabuchi, H. Muto
{"title":"3D Reconstruction of TiO2/Epoxy Nanocomposite for Evaluation of Agglomerate Disruption Effect","authors":"Kazuma Tagawa, M. Kurimoto, T. Sawada, S. Yoshida, T. Umemoto, T. Mabuchi, H. Muto","doi":"10.1109/CEIDP55452.2022.9985330","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985330","url":null,"abstract":"Controlling the dispersion states of nanoparticles is important for polymer nanocomposites because the breakdown strength depends on the size of the nanoparticle’s agglomerate. In general, most agglomerates are disrupted by dispersion processes such as homogenizer and sonication. However, the disruption effect has not been quantified for evaluating the particle size distribution in 3D. This paper describes a quantification method of the homogenizer disruption effect on the agglomerates of TiO2/epoxy nanocomposites using 3D reconstructed models based on FIB-SEM images.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"14 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":"129460244","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
Time Delay Estimation Algorithm of Partial Discharge Ultrasound Signal Based on Wavelet Transform Image Convolution 基于小波变换图像卷积的局部放电超声信号时延估计算法
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985289
Y. Li, Q. Ma, Bin Wang, Ming Dong, Lemeng Zhang, Jun Peng
{"title":"Time Delay Estimation Algorithm of Partial Discharge Ultrasound Signal Based on Wavelet Transform Image Convolution","authors":"Y. Li, Q. Ma, Bin Wang, Ming Dong, Lemeng Zhang, Jun Peng","doi":"10.1109/CEIDP55452.2022.9985289","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985289","url":null,"abstract":"In order to explore the time delay estimation methods under low signal-to-noise ratios (SNRs), this paper proposes a method based on the wavelet transform image convolution. First, by applying the wavelet transform to the acquired signal, the time-frequency graphs are analyzed. Then convolve the image to find the time shift corresponding to the maximum value. The time shift product with the sampling interval equals to the estimated value of time delay. For the purpose of verifying the applicability, the simulated PD signals are constructed, and compare the proposed method with two traditional methods–the threshold method and the generalized cross-correlation method. Simulation results show that prediction accuracy increased by 40% under low SNRs, and greatly reduce the mean absolute deviation of time delay. Finally, Experimental results validated the feasibility of the proposed methods. The location distance error is limited to 0. 15m.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"1 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":"124214016","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
Electric Field and Temperature Characteristics of Accumulated Charge Amount in Several Polymeric Insulating Materials Using Q(t) Method and Quantum Chemical Calculation 基于Q(t)法和量子化学计算的几种聚合物绝缘材料中累积电荷量的电场和温度特性
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985349
H. Uehara, T. Okamoto, Y. Sekii, S. Iwata, T. Takada
{"title":"Electric Field and Temperature Characteristics of Accumulated Charge Amount in Several Polymeric Insulating Materials Using Q(t) Method and Quantum Chemical Calculation","authors":"H. Uehara, T. Okamoto, Y. Sekii, S. Iwata, T. Takada","doi":"10.1109/CEIDP55452.2022.9985349","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985349","url":null,"abstract":"In this study, the Q(t) method is used to evaluate the accumulated charge characteristics of several polymeric insulating materials with respect to the electric field and temperature. The accumulated charge characteristics obtained using the Q(t) method are analyzed in terms of their molecular structures and energy levels obtained through quantum chemical calculations. The results show that the deep trap depth formed by the constituent monomers hinders the migration of holes and electrons and suppresses charge accumulation inside the polymeric insulating material. Additionally, many conjugated double bonds form a strong planar structure with the $pi$ bonds, which restricts intramolecular motion due to the bending and rotation of the bonds, and thus exhibits excellent heat resistance.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"14 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":"123445042","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
Round Robin Tests of Electron Irradiated Polymers via Pulsed Electroacoustic Measurements 通过脉冲电声测量的电子辐照聚合物的循环测试
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985304
Z. Gibson, J. R. Dennison, V. Griseri
{"title":"Round Robin Tests of Electron Irradiated Polymers via Pulsed Electroacoustic Measurements","authors":"Z. Gibson, J. R. Dennison, V. Griseri","doi":"10.1109/CEIDP55452.2022.9985304","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985304","url":null,"abstract":"Charge accumulation and migration can be studied using the pulsed electroacoustic (PEA) method to directly measure internal charge distributions in dielectric materials. This study aims to compare measurements using PEA systems constructed in labs at Utah State University and Université Paul Sabatier to establish confidence in comparing PEA results between different PEA systems. While there is good agreement in data measured for pristine samples with DC bias applied and no charge embedded, there are discrepancies in the data when measuring irradiated samples with embedded charge. The overall characteristics of charge distributions measured with both systems is clearly the same, but there are small differences observed in the distance scaling and larger differences in the magnitude of the charge measured.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"7 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":"126272537","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
Estimation Accuracy of Electric Field in Cable-Insulating Wall Based on Space Charge Measurement 基于空间电荷测量的电缆绝缘壁电场估计精度
2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985342
N. Fuse, S. Morita, S. Miyazaki, T. Takahashi, N. Hozumi
{"title":"Estimation Accuracy of Electric Field in Cable-Insulating Wall Based on Space Charge Measurement","authors":"N. Fuse, S. Morita, S. Miyazaki, T. Takahashi, N. Hozumi","doi":"10.1109/CEIDP55452.2022.9985342","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985342","url":null,"abstract":"A method to evaluate the accuracy of space-charge measurements by estimating the electric field distribution in the insulating walls of cables is proposed in this work. Time-domain deconvolution is used to derive the stable and fully automatic processing techniques necessary to manipulate the large data required to perform the statistical analysis. The evaluation method optimizes the deconvolution parameters and analyzes the space charge waveform, which is usually only used as a reference waveform. The proposed method was validated by analyzing pulse electroacoustic waveforms obtained from a 66 kV-class extruded cable under dc voltage application. The impulse response of the observation system was optimized to provide a 95.4% confidence interval of 0.8% ± 24.1% for the waveforms, which were observed under application of a dc voltage of 30 kV. Similar estimation accuracy was confirmed for waveforms measured under application of 45 kV. Therefore, the accuracy estimated using the reference waveform can be applied to waveforms observed at high voltages that can induce both space-charge accumulation and field distortion.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"51 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":"126283939","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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