Pub Date : 2026-02-03DOI: 10.1109/TDEI.2025.3639843
Ondřej Šefl;Raphael Färber;Christian M. Franck
Presents corrections to the paper, Corrections to “On the Frequency Dependence of the PDIV in Twisted Pair Magnet Wire Analogy in Dry Air”.
对“干燥空气中双绞线磁线类比中PDIV的频率依赖性问题”进行了修正。
{"title":"Corrections to “On the Frequency Dependence of the PDIV in Twisted Pair Magnet Wire Analogy in Dry Air”","authors":"Ondřej Šefl;Raphael Färber;Christian M. Franck","doi":"10.1109/TDEI.2025.3639843","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3639843","url":null,"abstract":"Presents corrections to the paper, Corrections to “On the Frequency Dependence of the PDIV in Twisted Pair Magnet Wire Analogy in Dry Air”.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"33 1","pages":"780-780"},"PeriodicalIF":3.1,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11371455","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1109/TDEI.2026.3651919
{"title":"IEEE Transactions on Dielectrics and Electrical Insulation Information for Authors","authors":"","doi":"10.1109/TDEI.2026.3651919","DOIUrl":"https://doi.org/10.1109/TDEI.2026.3651919","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"33 1","pages":"C4-C4"},"PeriodicalIF":3.1,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11371486","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-03DOI: 10.1109/TDEI.2026.3651925
{"title":"IEEE Dielectrics and Electrical Insulation Society Information","authors":"","doi":"10.1109/TDEI.2026.3651925","DOIUrl":"https://doi.org/10.1109/TDEI.2026.3651925","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"33 1","pages":"C3-C3"},"PeriodicalIF":3.1,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11371483","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-06DOI: 10.1109/TDEI.2026.3651211
{"title":"2025 Index IEEE Transactions on Dielectrics and Electrical Insulation","authors":"","doi":"10.1109/TDEI.2026.3651211","DOIUrl":"https://doi.org/10.1109/TDEI.2026.3651211","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 6","pages":"3780-3886"},"PeriodicalIF":3.1,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11333921","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-25DOI: 10.1109/TDEI.2025.3634191
{"title":"IEEE Transactions on Dielectrics and Electrical Insulation Information for Authors","authors":"","doi":"10.1109/TDEI.2025.3634191","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3634191","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 6","pages":"C4-C4"},"PeriodicalIF":3.1,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11315173","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-25DOI: 10.1109/TDEI.2025.3640804
Michael Wübbenhorst
{"title":"Letter of Appreciation","authors":"Michael Wübbenhorst","doi":"10.1109/TDEI.2025.3640804","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3640804","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 6","pages":"3775-3779"},"PeriodicalIF":3.1,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11315174","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-25DOI: 10.1109/TDEI.2025.3634189
{"title":"IEEE Dielectrics and Electrical Insulation Society Information","authors":"","doi":"10.1109/TDEI.2025.3634189","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3634189","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 6","pages":"C3-C3"},"PeriodicalIF":3.1,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11315177","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-22DOI: 10.1109/TDEI.2025.3647375
Koki Juni;Masahiro Sato;Takahiro Umemoto;Akiko Kumada;Kunihiko Hidaka;Takanori Yasuoka;Yoshikazu Hoshina;Motoharu Shiiki
In direct current gas-insulated switchgear (dc-GIS), surface charge accumulation on insulating spacers is a significant challenge. Accumulated charges due to high dc electric fields distort the electric fields and decrease the flashover voltage. With surface charge measurements and numerical simulations, it is revealed that multiple factors, such as electric field strength and temperature, affect the charging profile. The objective of this article is to investigate the charge accumulation characteristics of insulating spacers with different shapes through experiments and calculations and to elucidate the charging mechanism. Surface charge distributions on downsized cone-type and disk-type model spacers under a simulated dc-GIS environment are measured and compared. Additionally, simulations considering the spacer bulk and insulating gas are conducted. Based on the measurements and simulations, the dominant charge supply sources and charge transport paths responsible for the charging phenomena are discussed. The results show that the surface charge distribution profiles of the two types of spacers differ in terms of charge quantity, charging area, and time variations. These results indicate that the charges injected from the electrode are predominantly transported through the spacer bulk in cone-type spacers and through the spacer surface in disk-type spacers. The dominant charge transport path and the intensive charge accumulation are greatly influenced by the initial electric field distribution, determined by the spacer geometry.
{"title":"Effect of Spacer Geometry on Surface Charge Accumulation on DC-GIS Insulating Spacer","authors":"Koki Juni;Masahiro Sato;Takahiro Umemoto;Akiko Kumada;Kunihiko Hidaka;Takanori Yasuoka;Yoshikazu Hoshina;Motoharu Shiiki","doi":"10.1109/TDEI.2025.3647375","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3647375","url":null,"abstract":"In direct current gas-insulated switchgear (dc-GIS), surface charge accumulation on insulating spacers is a significant challenge. Accumulated charges due to high dc electric fields distort the electric fields and decrease the flashover voltage. With surface charge measurements and numerical simulations, it is revealed that multiple factors, such as electric field strength and temperature, affect the charging profile. The objective of this article is to investigate the charge accumulation characteristics of insulating spacers with different shapes through experiments and calculations and to elucidate the charging mechanism. Surface charge distributions on downsized cone-type and disk-type model spacers under a simulated dc-GIS environment are measured and compared. Additionally, simulations considering the spacer bulk and insulating gas are conducted. Based on the measurements and simulations, the dominant charge supply sources and charge transport paths responsible for the charging phenomena are discussed. The results show that the surface charge distribution profiles of the two types of spacers differ in terms of charge quantity, charging area, and time variations. These results indicate that the charges injected from the electrode are predominantly transported through the spacer bulk in cone-type spacers and through the spacer surface in disk-type spacers. The dominant charge transport path and the intensive charge accumulation are greatly influenced by the initial electric field distribution, determined by the spacer geometry.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"33 1","pages":"732-741"},"PeriodicalIF":3.1,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102987","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}
Pub Date : 2025-10-23DOI: 10.1109/TDEI.2025.3623573
Marek Florkowski;Maciej Kuniewski;Paweł Mikrut
Interpretation of dielectric losses is critical for high-voltage insulation reliability and long-term endurance. Electrical insulation in various sectors, such as power grids and transportation electrification, is exposed to high voltages (HVs) containing harmonics due to ubiquitous power electronic-based conversions, nonlinear elements, and transients. This letter highlights the contribution of partial discharge (PD)-related power losses. In particular, it presents a methodology for the quantitative extraction of PD-related power losses caused by HV harmonics, as well as the role of the phase angle in either amplifying or attenuating these components. The investigation is performed on a polyethylene specimen, typical for HV insulation. The results clearly indicate the influence of the harmonic phase angle on the quantitative contribution to PD power losses. The presented methodology can be useful both in the design of HV insulation systems and for diagnostic purposes.
{"title":"Effect of Phase Angle of High-Voltage Harmonics on PD Power Losses","authors":"Marek Florkowski;Maciej Kuniewski;Paweł Mikrut","doi":"10.1109/TDEI.2025.3623573","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3623573","url":null,"abstract":"Interpretation of dielectric losses is critical for high-voltage insulation reliability and long-term endurance. Electrical insulation in various sectors, such as power grids and transportation electrification, is exposed to high voltages (HVs) containing harmonics due to ubiquitous power electronic-based conversions, nonlinear elements, and transients. This letter highlights the contribution of partial discharge (PD)-related power losses. In particular, it presents a methodology for the quantitative extraction of PD-related power losses caused by HV harmonics, as well as the role of the phase angle in either amplifying or attenuating these components. The investigation is performed on a polyethylene specimen, typical for HV insulation. The results clearly indicate the influence of the harmonic phase angle on the quantitative contribution to PD power losses. The presented methodology can be useful both in the design of HV insulation systems and for diagnostic purposes.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 6","pages":"3768-3771"},"PeriodicalIF":3.1,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824292","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}
Pub Date : 2025-10-20DOI: 10.1109/TDEI.2025.3623574
Ryotaro Ozaki;Takahiro Mihara;Kazunori Kadowaki
The electric-field dependence of the effective mobility in low-density polyethylene (LDPE) is experimentally investigated under high electric fields. The spatial profiles of space charge and internal electric field are measured using the pulsed electroacoustic (PEA) method. Combining these measurements with current density provides the spatial profile of the effective mobility in the sample. The effective mobility decreases exponentially with increasing the electric field, revealing negative electric-field-dependent mobility behavior.
{"title":"Experimental Evaluation of Spatial Distribution of Electric-Field-Dependent Mobility in LDPE","authors":"Ryotaro Ozaki;Takahiro Mihara;Kazunori Kadowaki","doi":"10.1109/TDEI.2025.3623574","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3623574","url":null,"abstract":"The electric-field dependence of the effective mobility in low-density polyethylene (LDPE) is experimentally investigated under high electric fields. The spatial profiles of space charge and internal electric field are measured using the pulsed electroacoustic (PEA) method. Combining these measurements with current density provides the spatial profile of the effective mobility in the sample. The effective mobility decreases exponentially with increasing the electric field, revealing negative electric-field-dependent mobility behavior.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 6","pages":"3772-3774"},"PeriodicalIF":3.1,"publicationDate":"2025-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145824294","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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