IEEE Transactions on Dielectrics and Electrical Insulation最新文献_第6页

Characteristics of Charge Accumulation at the Interface of Double-Layer XLPE Under DC Voltage

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-24 DOI: 10.1109/TDEI.2024.3486274

Yao Qin;Yi Ge;Juntao Zhao;Yifei He;Zepeng Lv;Kai Wu;Yong Zhao;Yumei Zhou

{"title":"Characteristics of Charge Accumulation at the Interface of Double-Layer XLPE Under DC Voltage","authors":"Yao Qin;Yi Ge;Juntao Zhao;Yifei He;Zepeng Lv;Kai Wu;Yong Zhao;Yumei Zhou","doi":"10.1109/TDEI.2024.3486274","DOIUrl":"https://doi.org/10.1109/TDEI.2024.3486274","url":null,"abstract":"The factory joint is a critical component within high-voltage direct current (HVdc) submarine cable transmission systems, profoundly impacting the stability of equipment operation through its insulation interface performance. However, the characteristics of space charge accumulation at the interface of double-layer cross-linked polyethylene (XLPE) insulation in factory joints, arising from variations in the fabrication process, remain largely unexplored. Therefore, this article investigates the effects of the degree of cross-linking and contact tightness on space charge accumulation characteristics within the double-layer XLPE interface. Experimental findings indicate that the degree of cross-linking alters the carrier mobility of XLPE and the polarity of charges accumulated at the interface of the double-layer sample. In addition, the contact tightness of the double-layer sample can affect the amount of charges accumulated at the interface. Then, based on the simplified bipolar carrier transport model, the key parameters of the simulation are optimized using the particle swarm optimization (PSO) algorithm, and the values of the interface barriers are obtained. Finally, the behavior of interface charge accumulation is successfully explained in terms of the differences in the mobilities and the interface barriers for positive and negative charges. This study offers valuable guidance for the utilization and maintenance of HVdc cable factory joints.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 2","pages":"707-716"},"PeriodicalIF":2.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A Review of Methods and Applications for Improving Electric Driving Performance of Dielectric Elastomer

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-24 DOI: 10.1109/TDEI.2024.3486271

Libin Yang;Mengyuan Hao;Kai Yang;Di Lan;Xuefeng Zhang;Xiangyu Tian;Zhengdong Wang

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An Ultrasonic Phased Array Method for Detecting the Internal Defects in Composite Insulators by Using the Concave Probe

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-16 DOI: 10.1109/TDEI.2024.3481364

Zhouyiao Zou;Haian Qiu;Zhenhua Wang;Zhenpeng Liu;Cuizhe Kuang

引用次数: 0

Self-Healing of Water Tree Damage of Double-Shell Microcapsules/XLPE Insulation Composite Material Insulation

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-11 DOI: 10.1109/TDEI.2024.3479128

Bo Zhu;Yaqi Zhu;Weiqiang Fu;Hao Sun;Shengkun He

{"title":"Self-Healing of Water Tree Damage of Double-Shell Microcapsules/XLPE Insulation Composite Material Insulation","authors":"Bo Zhu;Yaqi Zhu;Weiqiang Fu;Hao Sun;Shengkun He","doi":"10.1109/TDEI.2024.3479128","DOIUrl":"https://doi.org/10.1109/TDEI.2024.3479128","url":null,"abstract":"In order to solve the problem of insulation performance degradation caused by water tree aging of cross-linked polyethylene (XLPE), a self-healing method of XLPE material based on microcapsule system was proposed. The repair material of water tree damage needs to react with water under the action of catalyst. In order to ensure the accuracy and timeliness of self-repair of water tree damage, a microcapsule sample with double-shell structure was designed. The results show that the double-shell microcapsules increase the crystallinity of the material and enhance the structural compactness of the material, thereby inhibiting the migration of carriers. When the microcapsule doping amount is 1.0 wt.%, the insulation performance of the material is enhanced. When the double-shell microcapsules are broken under the action of an electric field, the repair material enters the water tree under capillary action and reacts with the residual water in the water tree. The generated organic matter fills the water tree cavity and repairs the water tree damage area, thereby realizing the water tree self-healing of the composite material. The technology improves the performance analysis of self-healing materials and has a good research prospect in practical applications.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 1","pages":"512-521"},"PeriodicalIF":2.9,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IEEE Dielectrics and Electrical Insulation Society Information 电气和电子工程师学会电介质和电气绝缘协会信息

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-11 DOI: 10.1109/TDEI.2024.3465315

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IEEE Transactions on Dielectrics and Electrical Insulation Publication Information 电气和电子工程师学会《电介质与电气绝缘》杂志出版信息

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-11 DOI: 10.1109/TDEI.2024.3465309

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Editorial Electrets and Related Phenomena 编辑电子管及相关现象

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-11 DOI: 10.1109/TDEI.2024.3463108

Dimitry Rychkov;Martin Kaltenbrunner;Reinhard Schwödiauer;Simona Bauer-Gogonea

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Breakdown Characteristics and Damage Mechanism of Typical Defects in Oil-Paper Insulation Under HEMP

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-11 DOI: 10.1109/TDEI.2024.3479129

Feng Qin;Simeng Li;Wei Chen;Zhitong Cui;Xin Nie;Wei Wu

{"title":"Breakdown Characteristics and Damage Mechanism of Typical Defects in Oil-Paper Insulation Under HEMP","authors":"Feng Qin;Simeng Li;Wei Chen;Zhitong Cui;Xin Nie;Wei Wu","doi":"10.1109/TDEI.2024.3479129","DOIUrl":"https://doi.org/10.1109/TDEI.2024.3479129","url":null,"abstract":"High-altitude electromagnetic pulses (HEMPs) can couple with power transmission and distribution lines, creating a nanosecond-level HEMP conductive environment that can degrade the insulation performance and even cause breakdown of distribution transformers, posing a threat to the safe operation of power systems. In this article, based on the main vulnerable parts identified in HEMP effect tests on distribution transformers, a typical defect model of oil-paper insulation was constructed, and an experimental platform was set up to study the breakdown characteristics of oil-paper insulation under HEMP. The process of charge accumulation was analyzed using finite element simulation, revealing the damage mechanism of oil-paper insulation under HEMP and other nanosecond pulses. The results show that the breakdown characteristics of oil-paper insulation under HEMP have a significant polarity effect, which is related to the accumulation of charges at the interface of oil-paper insulation. The accumulation of charges at the interface of oil-paper insulation is comparable to the nanosecond rise time of the HEMP waveform, resulting in a certain balance relationship in the location of breakdown points. Under negative-polarity HEMP, needle-plate defect structures have a higher proportion of breakdown at the trailing edge of the waveform, indicating that the energy provided within the rise time of the HEMP waveform is slightly insufficient.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 2","pages":"1046-1055"},"PeriodicalIF":2.9,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IEEE Transactions on Dielectrics and Electrical Insulation Information for Authors IEEE Transactions on Dielectrics and Electrical Insulation 给作者的信息

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-11 DOI: 10.1109/TDEI.2024.3465313

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Influence of Sample Surface Oil on the Accuracy of Space Charge Measurement in Oil-Paper

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-10-10 DOI: 10.1109/TDEI.2024.3478131

Yuntong Ma;Zepeng Lv;Xinyue Zhang;Yining Zhang;Kai Wu;Yonghong Cheng

{"title":"Influence of Sample Surface Oil on the Accuracy of Space Charge Measurement in Oil-Paper","authors":"Yuntong Ma;Zepeng Lv;Xinyue Zhang;Yining Zhang;Kai Wu;Yonghong Cheng","doi":"10.1109/TDEI.2024.3478131","DOIUrl":"https://doi.org/10.1109/TDEI.2024.3478131","url":null,"abstract":"Space charge in oil-paper under dc electric field is a significant factor for the development of converter transformer. The space charge in oil-paper is usually measured by a pulsed electroacoustic (PEA) method. But, its accuracy is not good that the surface charge amount at electrode cannot match the bulk charge-induced charge. In this article, space charge distributions in oil-paper samples with and without surface oil are measured and analyzed. The amount of bulk charge in the sample without surface oil is larger than that in the sample with surface oil. In the sample with surface oil, the amount of surface charge at lower electrode has a distinct error that it is much higher than the bulk charge-induced charge. The space charge-induced charge at lower electrode is calculated and compared with the measured surface charge. It is found that surface oil on the sample can greatly influence the amount of surface charge at electrodes. In the sample without surface oil, the measured surface charge at lower electrode has similar amount with the bulk charge-induced charge. In the sample with surface oil, the quantity of the measured surface charge is much higher than that of the induced charge. Besides, the bulk charge amount is less in the sample with surface oil. It indicates that the space charge injected from upper electrode to surface oil interferes the development of surface charge at electrodes during voltage application. During voltage removal, the charges in the surface oil induce more charges at lower electrode. Therefore, it is suggested to remove surface oil on oil-paper samples for an accurate space charge measurement.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 1","pages":"624-626"},"PeriodicalIF":2.9,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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