Pub Date : 2025-06-17DOI: 10.1109/MEI.2025.11039229
Arijeet Roy Chowdhury;Abhay Singh Gour
This article studies the effects (experimental studies and theoretical estimation) on high-temperature-superconducting cable operation of change of cryogen from liquid nitrogen to liquid hydrogen.
本文研究了液氮变液氢对高温超导电缆运行的影响（实验研究和理论估计）。
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Pub Date : 2025-06-17DOI: 10.1109/MEI.2025.11039204
Zepeng Lv
Aluminum electrolytic capacitors (AEC), with their notable advantages of having a low cost and high capacitance, have widespread application in numerous fields such as power circuits, signal processing circuits, automotive electronics, and industrial control [1]–[4]. However, because of the low conductivity and poor temperature and humidity stability of traditional cathode materials, AEC face significant challenges in achieving breakthroughs in performance, such as high-frequency response (>30 kHz), high-temperature resistance (>150°C), and high-humidity tolerance (>90% relative humidity [RH]) [1]. These limitations severely restrict their potential applications in fields such as new energy vehicles, rail transportation, aerospace, and marine engineering (Figure 1).
{"title":"Stories from China","authors":"Zepeng Lv","doi":"10.1109/MEI.2025.11039204","DOIUrl":"https://doi.org/10.1109/MEI.2025.11039204","url":null,"abstract":"Aluminum electrolytic capacitors (AEC), with their notable advantages of having a low cost and high capacitance, have widespread application in numerous fields such as power circuits, signal processing circuits, automotive electronics, and industrial control [1]–[4]. However, because of the low conductivity and poor temperature and humidity stability of traditional cathode materials, AEC face significant challenges in achieving breakthroughs in performance, such as high-frequency response (>30 kHz), high-temperature resistance (>150°C), and high-humidity tolerance (>90% relative humidity [RH]) [1]. These limitations severely restrict their potential applications in fields such as new energy vehicles, rail transportation, aerospace, and marine engineering (Figure 1).","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 4","pages":"43-45"},"PeriodicalIF":2.6,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11039204","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2025-06-17DOI: 10.1109/MEI.2025.11039234
If you are excited to work together in a team of experts and help shape the content of IEEE Electrical Insulation Magazine (EIM), you may want to apply for a position on the Editorial Board. DEIS is now looking for two new board members, starting January 1, 2026.
{"title":"Bulletin Board: IEEE Electrical Insulation Magazine Is Looking for Two New Board Members","authors":"","doi":"10.1109/MEI.2025.11039234","DOIUrl":"https://doi.org/10.1109/MEI.2025.11039234","url":null,"abstract":"If you are excited to work together in a team of experts and help shape the content of IEEE Electrical Insulation Magazine (EIM), you may want to apply for a position on the Editorial Board. DEIS is now looking for two new board members, starting January 1, 2026.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 4","pages":"54-54"},"PeriodicalIF":2.6,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11039234","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2025-06-17DOI: 10.1109/MEI.2025.11039203
H. Craig Miller
This article gives the history of the International Symposia on Discharges and Electrical Insulation in Vacuum (ISDEIV). The author describes details of individual symposia and comments on the changes in the symposia.
{"title":"History of the International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)—60 Years So Far","authors":"H. Craig Miller","doi":"10.1109/MEI.2025.11039203","DOIUrl":"https://doi.org/10.1109/MEI.2025.11039203","url":null,"abstract":"This article gives the history of the International Symposia on Discharges and Electrical Insulation in Vacuum (ISDEIV). The author describes details of individual symposia and comments on the changes in the symposia.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 4","pages":"31-38"},"PeriodicalIF":2.6,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2025-06-17DOI: 10.1109/MEI.2025.11039232
Simon Rowland, professor of electrical materials at the University of Manchester, UK, is the recipient of the 2025 IEEE DEIS Eric O. Forster Memorial Award. The award recognizes “outstanding contributions and sustained leadership in the advancement of the field of dielectrics and electrical insulation.” The award is named in honor of Eric Forster, who was a prolific volunteer for the IEEE DEIS during its early years and who created many of the DEIS conferences the IEEE Dielectrics and Electrical Insulation Society now organizes. The Forster Award is only presented in odd-numbered years to carefully selected colleagues. Rowland received his BSc degree in 1980 from the University of East Anglia in Norwich and his PhD degree in 1984 from Chelsea College, The University of London. In his academic career, he was appointed a senior lecturer in 2003 and a professor in 2009 at the University of Manchester. Prof. Rowland was head of the Electrical and Electronic Engineering School at Manchester from 2015 to 2019. Before his academic career, he worked as a research engineer at STC in 1980–1981 and 1984–1989; in several engineering and management positions at BICC, a cable manufacturer, from 1989 until 1999; and in senior management at CCS, a part of Corning Inc., beginning 1999.
Simon Rowland，英国曼彻斯特大学电子材料教授，获得2025年IEEE DEIS Eric O. Forster纪念奖。该奖项旨在表彰“在电介质和电绝缘领域的杰出贡献和持续领导”。该奖项是为了纪念埃里克·福斯特而命名的，他在IEEE DEIS早期是一位多产的志愿者，他创建了许多由IEEE介电和电气绝缘协会组织的DEIS会议。福斯特奖只在奇数年颁发给精心挑选的同事。他于1980年在诺里奇的东安格利亚大学获得理学士学位，并于1984年在伦敦大学切尔西学院获得博士学位。在学术生涯中，他于2003年被任命为曼彻斯特大学高级讲师，2009年被任命为教授。罗兰教授于2015年至2019年担任曼彻斯特大学电气与电子工程学院院长。在从事学术工作之前，他曾于1980-1981年和1984-1989年在STC担任研究工程师；1989年至1999年，在电缆制造商BICC担任多个工程和管理职位；1999年开始在康宁公司旗下的CCS公司担任高级管理职务。
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Pub Date : 2025-06-17DOI: 10.1109/MEI.2025.11039199
Deepak Kanumuri
When I began my PhD in high voltage and insulation engineering at IIT Guwahati, I was driven by a desire to contribute something meaningful to the energy sector, something that could help make future power systems more sustainable and more resilient. This was rooted in a question that drives much of my research: How can we create eco-friendly, high-performance alternatives to traditional insulating oils in transformers, especially for high-voltage direct current (HVDC) systems?
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Pub Date : 2025-06-17DOI: 10.1109/MEI.2025.11039197
Mathieu Lachance;Udo Ranninger;Stefan Hoek
This article summarizes how the apparent charge is calculated during partial discharge measurements according to IEG 60270.
本文总结了根据IEG 60270进行局部放电测量时如何计算表观电荷。
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Pub Date : 2025-06-17DOI: 10.1109/MEI.2025.11039228
Yoshimichi Ohki
The role of power facilities in delivering electricity, which supports our modern society, from power plants to consumers is becoming increasingly important. There are many different types of electric power equipment. Among them, switchgear receives high-voltage electricity and converts it into a voltage suitable for distribution to various systems. As a result, switchgear is used in many harsh environments, including in factories that handle corrosive gases and in facilities located in areas prone to salt damage. As shown in Figure 1, switchgear is composed of many pieces of equipment, such as transformers, circuit breakers, instrument transformers, and circuit conductors. Polymeric insulating materials such as polyester resin and epoxy resin are used in many components [1].
{"title":"News from Japan","authors":"Yoshimichi Ohki","doi":"10.1109/MEI.2025.11039228","DOIUrl":"https://doi.org/10.1109/MEI.2025.11039228","url":null,"abstract":"The role of power facilities in delivering electricity, which supports our modern society, from power plants to consumers is becoming increasingly important. There are many different types of electric power equipment. Among them, switchgear receives high-voltage electricity and converts it into a voltage suitable for distribution to various systems. As a result, switchgear is used in many harsh environments, including in factories that handle corrosive gases and in facilities located in areas prone to salt damage. As shown in Figure 1, switchgear is composed of many pieces of equipment, such as transformers, circuit breakers, instrument transformers, and circuit conductors. Polymeric insulating materials such as polyester resin and epoxy resin are used in many components [1].","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 4","pages":"39-42"},"PeriodicalIF":2.6,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11039228","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2025-06-17DOI: 10.1109/MEI.2025.11039238
Tony Lujia Chen
This issue features three articles, the first of which is Lachance, Ranninger, and Hoek's article titled “Apparent Charge Measurements According to IEC 60270. How Is It Done?” It provides a comprehensive explanation of apparent charge measurement in partial discharge (PD) testing in accordance with IEC 60270. The article outlines the theoretical basis of PD, the challenges of accurate charge quantification, and the practical implications of quasi-integration and calibration. It also discusses the influence of test object size and distributed impedance on measurement accuracy. This detailed study may be of significant interest to engineers working in high-voltage insulation diagnostics and condition monitoring of electrical assets.
{"title":"From the Editor","authors":"Tony Lujia Chen","doi":"10.1109/MEI.2025.11039238","DOIUrl":"https://doi.org/10.1109/MEI.2025.11039238","url":null,"abstract":"This issue features three articles, the first of which is Lachance, Ranninger, and Hoek's article titled “Apparent Charge Measurements According to IEC 60270. How Is It Done?” It provides a comprehensive explanation of apparent charge measurement in partial discharge (PD) testing in accordance with IEC 60270. The article outlines the theoretical basis of PD, the challenges of accurate charge quantification, and the practical implications of quasi-integration and calibration. It also discusses the influence of test object size and distributed impedance on measurement accuracy. This detailed study may be of significant interest to engineers working in high-voltage insulation diagnostics and condition monitoring of electrical assets.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 4","pages":"4-4"},"PeriodicalIF":2.6,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11039238","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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