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}
Pub Date : 2025-06-17DOI: 10.1109/MEI.2025.11039225
The 100th International Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) is taking place in Manchester, United Kingdom, from Sunday, 14th to 17th of September 2025. The CEIDP was established within the Division of Engineering and Industrial Research, National Academy of Sciences – National Research Council in 1920 in nearby Manhattan, NY, and continues to provide opportunity for specialists from around the world to meet and exchange their expertise, annually, now under sponsorship from the IEEE Dielectrics and Electrical Insulation Society. The goal of this annual Conference is to bring together researchers in all disciplines from industry, universities, government, and other laboratories to discuss the latest results and developments in the area of electrical insulation and dielectric phenomena. The CEIDP is aimed at fostering free discussion of scientific and technical topics but conference participants are expected to avoid any commercialization of their research activities or research results.
{"title":"Bulletin Board: IEEE CEIDP 2025 Updates","authors":"","doi":"10.1109/MEI.2025.11039225","DOIUrl":"https://doi.org/10.1109/MEI.2025.11039225","url":null,"abstract":"The 100th International Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) is taking place in Manchester, United Kingdom, from Sunday, 14th to 17th of September 2025. The CEIDP was established within the Division of Engineering and Industrial Research, National Academy of Sciences – National Research Council in 1920 in nearby Manhattan, NY, and continues to provide opportunity for specialists from around the world to meet and exchange their expertise, annually, now under sponsorship from the IEEE Dielectrics and Electrical Insulation Society. The goal of this annual Conference is to bring together researchers in all disciplines from industry, universities, government, and other laboratories to discuss the latest results and developments in the area of electrical insulation and dielectric phenomena. The CEIDP is aimed at fostering free discussion of scientific and technical topics but conference participants are expected to avoid any commercialization of their research activities or research results.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 4","pages":"55-55"},"PeriodicalIF":2.6,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11039225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308281","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 : 2025-06-03DOI: 10.1109/MEI.2025.11023184
Sombel Diaham;Gilbert Teyssèdre;Petru Notingher
The Thematic School on Dielectrics at its cruising speed.
电介质主题学派在其巡航速度。
{"title":"Report on the 3rd Thematic School on Dielectrics 2024","authors":"Sombel Diaham;Gilbert Teyssèdre;Petru Notingher","doi":"10.1109/MEI.2025.11023184","DOIUrl":"https://doi.org/10.1109/MEI.2025.11023184","url":null,"abstract":"The Thematic School on Dielectrics at its cruising speed.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 3","pages":"27-33"},"PeriodicalIF":2.6,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11023184","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206003","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 : 2025-06-03DOI: 10.1109/MEI.2025.11023209
Yoshimichi Ohki
The News from Japan in the last issue [1] mentioned that “Cross-linked polyethylene (XLPE) possesses irreversible covalent cross-linked bonds, and because of the three-dimensional mesh structure, it cannot be melted or dissolved, making material recycling difficult. Therefore, XLPE is, at this point, unsuitable for a greener society.” The article further mentioned, “ENEOS NUC Corporation, Kawasaki, Japan, has developed, as a countermeasure to the above, XLPE with reversible cross-links that can convert back to the uncross-linked state by introducing a new cross-linker with a dynamic covalent bond.”
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