IEEE Transactions on Dielectrics and Electrical Insulation最新文献

IEEE Transactions on Dielectrics and Electrical Insulation Information for Authors IEEE介电学与电绝缘资讯汇刊

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-10-01 DOI: 10.1109/TDEI.2025.3612607

引用次数: 0

IEEE Dielectrics and Electrical Insulation Society Information 电介质和电气绝缘协会信息

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-09-30 DOI: 10.1109/TDEI.2025.3612605

引用次数: 0

Electric Field-Dependent XY Equivalent Structure Modeling of Oil-Paper Insulation Systems in Power Transformers: Improvement and Verification 电力变压器中油纸绝缘系统的电场相关XY等效结构建模：改进与验证

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-08-20 DOI: 10.1109/TDEI.2025.3600558

Guochao Qian;Xize Dai;Shilin Shi;Qian Zeng;Weiju Dai;Jian Hao

{"title":"Electric Field-Dependent XY Equivalent Structure Modeling of Oil-Paper Insulation Systems in Power Transformers: Improvement and Verification","authors":"Guochao Qian;Xize Dai;Shilin Shi;Qian Zeng;Weiju Dai;Jian Hao","doi":"10.1109/TDEI.2025.3600558","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3600558","url":null,"abstract":"XY equivalent structure model plays a crucial role in characterizing insulation states of oil-paper insulation system (OPIS) in power transformers based on frequency-domain spectroscopy (FDS). However, the conventional modeling method of OPIS only considers simplified calculation of complex permittivity for insulating mineral oil (IMO) under low field. This could cause large deviations and cannot meet high-field reality. Therefore, this article develops a new XY equivalent structure model to characterize the insulation dielectric performance of OPIS, including IMO and oil-impregnated paperboard (OIP), based on high-field FDS. First, the modeling processes of the XY model of OPIS are investigated as a function of the electric field. Then, the complex permittivity behaviors of IMO, OIP, and OPIS subject to diverse electric fields are discussed, respectively. Subsequently, according to high-field dielectric behaviors, a new calculation approach of complex permittivity of IMO is proposed, introducing two field-related parameters and an electric field enhancement factor <inline-formula> <tex-math>$tau $ </tex-math></inline-formula>(E). Finally, the effectiveness of the new field-dependent XY model for OPIS is validated using the high-field complex permittivity of IMO. Compared with the traditional model, this work can accurately characterize field-dependent dielectric behaviors of OPIS in power transformers. This article will provide a solid foundation for health management and prognostics of OPIS in power transformers.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 5","pages":"2986-2994"},"PeriodicalIF":3.1,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190144","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}

引用次数: 0

Superhydrophobic Coating for Performance Enhancement of Polymeric Outdoor Insulators Used in HVDC Systems 提高高压直流系统用聚合物室外绝缘子性能的超疏水涂层

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-08-08 DOI: 10.1109/TDEI.2025.3596950

M-Ramez Halloum;B. Subba Reddy

{"title":"Superhydrophobic Coating for Performance Enhancement of Polymeric Outdoor Insulators Used in HVDC Systems","authors":"M-Ramez Halloum;B. Subba Reddy","doi":"10.1109/TDEI.2025.3596950","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3596950","url":null,"abstract":"Polymeric outdoor insulators in HVdc systems encounter additional challenges beyond the typical environmental and electrical stresses seen in HVac systems, such as increased pollution accumulation, surface charge accumulation, more severe discharges, and a higher failure rate. This study presents the development of a superhydrophobic coating made from polydimethylsiloxane (PDMS) and hydrophobic nano silica (SiO2) for polymeric outdoor insulators, achieving excellent water-repellency and self-cleaning properties. Experimental evaluations under various conditions—dry, clean fog, clean rain, salt fog, and salt rain—demonstrated significant performance improvements: for example, under salt rain conditions, the flashover voltage increased by 97.3% (from 22.16 to 43.72 kV), while the leakage current (LC) reduced from 32.2 mA to 193 <inline-formula> <tex-math>$mu $ </tex-math></inline-formula>A. Simulation and experimental results demonstrate the superior performance of the superhydrophobic insulators, ensuring more stable and reliable operation of composite insulators in HVdc systems.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 5","pages":"2551-2558"},"PeriodicalIF":3.1,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190284","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}

引用次数: 0

Simulation and Modeling of Prompt Electrical Tree Formation During Dielectric Breakdown in Space-Charged Dielectrics 空间带电介质中介电击穿时迅速电树形成的仿真与建模

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-08-07 DOI: 10.1109/TDEI.2025.3550102

Thomas Montano;Carolyn Chun;Kathryn Sturge;Noah Hoppis;Ariana Shearin;Timothy Koeth

{"title":"Simulation and Modeling of Prompt Electrical Tree Formation During Dielectric Breakdown in Space-Charged Dielectrics","authors":"Thomas Montano;Carolyn Chun;Kathryn Sturge;Noah Hoppis;Ariana Shearin;Timothy Koeth","doi":"10.1109/TDEI.2025.3550102","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3550102","url":null,"abstract":"Electrical treeing is a principal degradation mechanism in polymeric dielectric material bombarded with charged particles. Such bombardment occurs when the material is exposed to space radiation environments. Treeing occurs during the rapid evacuation of charges that are embedded in the material and often culminates in catastrophic equipment failure. This article outlines the development and validation of a novel simulation model to depict electrical tree discharge within a dielectric polymethyl methacrylate block, but this model provides predictive power for any similar dielectric material. Dielectric materials have advantageous insulating properties and are crucial for aerospace applications, but the possibility of discharge failure due to electrical treeing poses a substantial risk to in-flight equipment. It jeopardizes expensive equipment, mission objectives, and the safety of any on-board crew. This article utilizes insights from novel imaging techniques that reveal characteristics of electrical treeing, such as the speed and development of the erosion wavefront and the speed at which the detrapped charge evacuates the material. A geometric model and an RLC model are proposed to model this observed behavior, and a stochastic model for the development of the Lichtenberg figure (LF) that incorporates these insights is presented and compared with the experimental results, validating the model with an <inline-formula> <tex-math>${R}^{{2}}$ </tex-math></inline-formula> value of 0.93 and highlighting areas for future development.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 5","pages":"2577-2585"},"PeriodicalIF":3.1,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189983","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}

引用次数: 0

IEEE Transactions on Dielectrics and Electrical Insulation Information for Authors IEEE介电学与电绝缘资讯汇刊

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-07-30 DOI: 10.1109/TDEI.2025.3588636

引用次数: 0

Call for Papers: Special Issue on Electrets and Related Phenomena 征文：驻极体及相关现象特刊

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-07-30 DOI: 10.1109/TDEI.2025.3589035

引用次数: 0

Call for Papers: Special Issue on Liquid Dielectrics 征文：液体介电学专题

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-07-30 DOI: 10.1109/TDEI.2025.3589036

引用次数: 0

IEEE Dielectrics and Electrical Insulation Society Information 电介质和电气绝缘协会信息

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-07-30 DOI: 10.1109/TDEI.2025.3588640

引用次数: 0

IEEE Transactions on Dielectrics and Electrical Insulation Publication Information IEEE电介质与电绝缘学报

IF 3.1 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-07-30 DOI: 10.1109/TDEI.2025.3588642

引用次数: 0