2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献_第6页

3D Frequency Domain Reflectometry Digital Twin of an Electrical Cable: A First Glance 三维频域反射计数字孪生电缆:第一眼

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985387

Mychal P. Spencer, A. Sriraman, Bill Glass, L. Fifield

{"title":"3D Frequency Domain Reflectometry Digital Twin of an Electrical Cable: A First Glance","authors":"Mychal P. Spencer, A. Sriraman, Bill Glass, L. Fifield","doi":"10.1109/CEIDP55452.2022.9985387","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985387","url":null,"abstract":"Electrical cables within nuclear power plants (NPPs) are critical components required for power, control, and instrumentation systems which may be exposed to stressors, such as elevated temperatures and gamma radiation. Such stressors can lead to a reduction in the remaining useful life of electrical cables, jeopardizing the safety of NPP systems. To evaluate the effect of stressors on the degradation of electrical cables, electrical reflectometry methods are commonly employed. Frequency domain reflectometry (FDR) is a non-destructive electrical reflectometry method that uses transmission line theory to detect degradation or impedance changes within electrical cables. However, in most cases FDR is only applied to de-energized cables, limiting the application in NPPs as the cable system must be taken offline. In this work, we explore the development of an FDR digital twin to predict the degradation of an electrical cable exposed to elevated temperature, which is expected to reduce the need for offline FDR. A 3-conductor low-voltage electrical cable was selected for evaluation of the digital twin. The fully three-dimensional digital twin was developed in COMSOL using the radio frequency module. A cable length of 30-m and frequency bandwidth of 400 MHz was selected to mimic real-world application of FDR. Over a 1-m region, the permittivity of the insulation was varied by up to 20% to model thermal degradation. The results demonstrate accurate detection of the insulation damage region, supporting further investigation of the FDR digital twin using real-world data and machine learning for predictive damage estimation or remaining lifetime.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"34 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":"116593022","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 Influence of Short-Width SiC Pulses on the Partial Discharge Inception Voltage of Turn-Turn Insulation 短宽SiC脉冲对匝匝绝缘局部放电起始电压的影响

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985315

A. Rumi, A. Cavallini

引用次数: 0

Analysis of Temperature Rise Characteristics and Current Carrying Capacity of Overhead Conductor 架空导线温升特性及载流能力分析

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985343

Xi Yang, Shenglong Zhu, Shaorui Qin, Xuhai Zhan, Lijuan Zhu

引用次数: 0

An integrated physics-based framework to predict insulation degradation under low and high-voltage electric field 基于物理的综合框架预测在低压和高压电场下的绝缘退化

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985273

M. Yazdani, R. Hebner, Wenping Zhao, C. Lents

引用次数: 0

Electrostatic Lubricant Filter Design Study 静电润滑油过滤器设计研究

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985356

Shabaz Khan, N. Dyrstad-Cincotta, Junior Nasah, Ajit Bhat, James Rickson, M. Mann

引用次数: 0

Design of a Cable System for a High-Power Density MVDC Aircraft Electric Power System 高功率密度MVDC飞机电力系统电缆系统设计

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985375

Arian Azizi, Mona Ghassemi, Jane Lehr

{"title":"Design of a Cable System for a High-Power Density MVDC Aircraft Electric Power System","authors":"Arian Azizi, Mona Ghassemi, Jane Lehr","doi":"10.1109/CEIDP55452.2022.9985375","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985375","url":null,"abstract":"Electric power systems (EPS) for the future generation of electrified aircraft such as more electric aircraft (MEA) and all electric aircraft (AEA) are required to be high power delivery and low system mass. Due to the limited heat transfer by convection at the cruising altitude of a wide-body aircraft, designing cables for high power delivery and low system mass electric power systems (EPSs) based on typical standards e.g., IEC 60502 faces challenges such as thermal limits of the typical insulation systems. To design a low system mass cable system, aluminum should be used as the conductor and the overall diameter of the cable should be decreased. The former increases the joule losses of the cable, and the latter reduces heat transfer by radiation and convection, both resulting in exceeding the cable’s maximum permissible temperature. In this paper, a multi-layer insulation system for a ±5kV cable is designed for aircraft applications. The designed multi-layer insulation system experiences higher thermal conductivity and contains high-temperature materials such as AlN, PI, and PFA to compensate for the overall heat transfer reduction caused by decreasing the cable’s overall diameter. The designed multi-layer cable has a smaller thickness and a lower mass compared to insulation systems designed based on IEC 60502 standard. To determine the electric field and temperature field distributions across the designed insulation system a coupled study in COMSOL Multiphysics has been conducted. The main purpose of this study is to compare the designed multi-layer cable system’s overall diameter and mass to the cables designed based on IEC 60502 standard. Moreover, the obtained electric field distribution across the designed insulation shows that the designed insulation system is electrically safe.","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":"132571556","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

In situ Measurement of Capacitors under High Hydrostatic Pressure 高静水压力下电容器的现场测量

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985248

M. Bekker, P. Pieterse, D. Uhrlandt

引用次数: 0

An Investigation of Mechanical Properties and Breakdown Strength of Polypropylene/Ultra-High Molecular Weight Polyethylene Nanocomposites 聚丙烯/超高分子量聚乙烯纳米复合材料力学性能及击穿强度研究

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985254

Phichet Ketsamee, T. Andritsch, A. Vaughan

{"title":"An Investigation of Mechanical Properties and Breakdown Strength of Polypropylene/Ultra-High Molecular Weight Polyethylene Nanocomposites","authors":"Phichet Ketsamee, T. Andritsch, A. Vaughan","doi":"10.1109/CEIDP55452.2022.9985254","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985254","url":null,"abstract":"This work studies the effects of surface-modified magnesium oxide (MgO) nanofiller on the mechanical properties and AC breakdown strength of polypropylene (PP) and ultra-high molecular weight polyethylene (UHMWPE) composites. The inclusion of nanoparticles results in improved interfacial interactions as a consequence of the transition from separate crystallization to co-crystallization. Thus, nano-MgO enhances the breakdown strength of PP/UHMWPE by acting as a compatibilizer between the PP/UHMWPE. UHMWPE decreases Young’s modulus and ultimate tensile strength while increasing elongation at yield point in the PP matrix. PP/UHMWPE has increased elasticity due to weak interfacial adhesion. The addition of nano-MgO, however, promotes stronger bonding between PP and UHMWPE phases, providing stiffer composites than those without MgO. There are no apparent differences between PP/UHMWPE and PP/UHMWPE/MgO regarding ultimate tensile strength. It is obvious that the dielectric breakdown strength and elastic enhancement are significantly influenced by the interfacial adhesion between the polymers.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"6 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":"133590764","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 System Characterization of High Frequency High Voltage Transformers 高频高压变压器绝缘系统特性研究

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985332

F. Guastavino, S. Galbiati, B. Massa, E. Torello

引用次数: 0

Investigation on AC Dielectric and Breakdown Properties of Fluorinert Liquid-Impregnated Insulation Paper 含氟液体浸渍绝缘纸的交流介电和击穿性能研究

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI: 10.1109/CEIDP55452.2022.9985322

Lejia Song, Liming Wang, F. Yin

{"title":"Investigation on AC Dielectric and Breakdown Properties of Fluorinert Liquid-Impregnated Insulation Paper","authors":"Lejia Song, Liming Wang, F. Yin","doi":"10.1109/CEIDP55452.2022.9985322","DOIUrl":"https://doi.org/10.1109/CEIDP55452.2022.9985322","url":null,"abstract":"With the expanding scale of UHV transmission projects, the lack of high-performance insulation combinations has threatened the safe operation of the power system. Phase-change material with suitable thermal stability and insulation characteristics is gradually being applied to high-voltage power electronic devices as refrigerants. Oil-paper insulation technology has been extensively studied, but no systematic compatibility tests are focusing on refrigerants and insulation materials. In this paper, Perfluoro-compound (FC-72) and Perfluoroheptano (EC74) were selected to study the compatibility with insulating paper at room temperature. By carrying out power-frequency breakdown voltage test, dielectric loss characteristics test, and SEM detection, electrical characteristic curves at different stages and temperatures, surface and profile microscopy images of two electronic fluoride liquid-impregnated insulating paper were obtained. Whether from the macro or micro perspectives, it can be proved that compatibility of FC-72 with insulating paper were significantly better than FC-74, and it also helps to improve the electrical resistance and aging resistance of insulating paper, which means FC-72 can be used as an alternative to excellent insulating oil for transformers.","PeriodicalId":374945,"journal":{"name":"2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"53 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":"127099491","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