{"title":"A Machine Learning Based Hybrid Algorithm for Partial Discharge Localization in Power Transformers","authors":"Dorsay Kashani-Gharavi;Reza Faraji-Dana;Hassan Reza Mirzaei","doi":"10.1109/TEMC.2024.3482432","DOIUrl":"10.1109/TEMC.2024.3482432","url":null,"abstract":"Locating partial discharges (PDs) in power transformers is crucial for preventing catastrophic damage. In this article, we first present a theoretical framework that proves the feasibility of determining a PD current uniquely by recording the tangential electromagnetic fields on its surrounding surface. This proof provides the analytical background required for the PD localization inverse problem by employing a machine learning approach. Three ML methods are combined in three steps of the proposed algorithm to achieve an accurate, yet near real-time identification of high-risk PDs. The effectiveness of the proposed method is demonstrated through simulations and experimental results, highlighting its potential for enhancing the reliability and safety of power transformers.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"67 1","pages":"295-304"},"PeriodicalIF":2.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ye Han, Jiajun Chen, Tao Fu, Quan Xue, Wenquan Che
{"title":"Frequency Selective Absorbers Based on Aramid-Paper Honeycomb Structures","authors":"Ye Han, Jiajun Chen, Tao Fu, Quan Xue, Wenquan Che","doi":"10.1109/temc.2024.3477634","DOIUrl":"https://doi.org/10.1109/temc.2024.3477634","url":null,"abstract":"","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"134 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"IEEE Transactions on Electromagnetic Compatibility Information for Authors","authors":"","doi":"10.1109/TEMC.2024.3462071","DOIUrl":"https://doi.org/10.1109/TEMC.2024.3462071","url":null,"abstract":"","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"66 5","pages":"C3-C3"},"PeriodicalIF":2.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10737010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Active Suppression of Transient Crosstalk Disturbances in Transmission Line Networks","authors":"Brahim El Mokhtari;Charles Jullien;Pierre Bonnet","doi":"10.1109/TEMC.2024.3481632","DOIUrl":"10.1109/TEMC.2024.3481632","url":null,"abstract":"Crosstalk phenomena cause major electromagnetic compatibility and signal integrity issues. For this reason, many studies have been carried out in an attempt to mitigate them. Solutions have been proposed, but the complexity of their implementation and the additional costs involved sometimes make them difficult to apply in practice. In this article, we propose a novel active suppression of known transient crosstalk disturbances for linear systems. A classical configuration with a power line disturbing a data line is numerically studied. The idea is to find a temporal signal, including all the system imperfection's, to cancel the resulting crosstalk. Different ways to generate this correction signal are explored. Crosstalk attenuation levels around 60 dB are reported. Applications to signal integrity are also presented as well as the possibility of virtual crosstalk measurements. The effectiveness and the high versatility in the implementation of the proposed process offer an alternative to conventional shielding or cable segregation solutions.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"66 6","pages":"1900-1908"},"PeriodicalIF":2.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Double Layer Pixelate Checkerboard Optimization for Ultrawideband Radar Absorber With Light Weight and Optical Transparency","authors":"Hanyu Shan, Tao Jiang","doi":"10.1109/temc.2024.3478772","DOIUrl":"https://doi.org/10.1109/temc.2024.3478772","url":null,"abstract":"","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"17 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correlated Lightning Electric Field and High-Speed Video Observations of Recoil Leaders Recorded in Rzeszow, Poland","authors":"Grzegorz Karnas;Grzegorz Maslowski","doi":"10.1109/TEMC.2024.3477622","DOIUrl":"10.1109/TEMC.2024.3477622","url":null,"abstract":"From an electromagnetic compatibility perspective, it is desirable to study all stages of lightning channel development and the corresponding electromagnetic fields. The sequence of lightning electric field signatures of K-changes was recorded by the Lightning Observatory in Rzeszow during the same intracloud (IC) lightning flash and was partially seen by a high-speed video camera. Two of those K-changes corresponding to visible recoil leaders were characterized in detail. Their microsecond scale E-field waveforms revealed an initial burst of submicrosecond impulses followed by a relatively slower and very regular oscillatory-like signature, which is not common for such type of lightning phenomena. The frequency of the oscillations estimated using power spectrum density analysis was about 1.43 MHz for both recoil leaders. A malfunction of the registration system was excluded because other K-changes within this IC lightning flash did not reveal such oscillatory features. Time domain comparison of E-field and high-speed video registrations suggested that discussed E-field signatures of recoil leaders occurred just after their attachment to existing positive leader channels. Such well-pronounced and regular oscillatory-like E-field lightning signatures state a considerable treat to electronics in ground structures and flying objects.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"67 1","pages":"217-226"},"PeriodicalIF":2.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142487431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alex Matthee;Niek Moonen;Ilman Sulaeman;Frank Leferink
{"title":"Transient Response of Generator- and Inverter-Based Microgrids to Rapid Load Changes","authors":"Alex Matthee;Niek Moonen;Ilman Sulaeman;Frank Leferink","doi":"10.1109/TEMC.2024.3435732","DOIUrl":"10.1109/TEMC.2024.3435732","url":null,"abstract":"Electromagnetic compatibility (EMC) challenges arise in generator and inverter-based power supplies due to the presence of inrush currents and rapid load changes among other electromagnetic interference sources. Inrush currents and rapid load variations have shown to cause EMC issues in the form of poor power quality. In this article, the fundamental principle of elements containing the energy are discussed where energy of rotational inertia is compared to electrical energy stored in capacitors and inductors. The investigated microgrids which include a mobile generator (rotational energy) powered military ground vehicle and an off-grid inverter (electrical energy) are measured and analyzed with respect to rapid load changes. This will identify challenges and inherent difference between generator based inverter based microgrids, as well as the benefits of each with respect to different load characteristics. This lays a foundation of determining the optimum between the quality of supply and the quality of demand, where inertia is a key factor in stability. The primary conclusion drawn from the measurement and analysis underscores the significance of load rising edge and amplitude in resulting instability due to transient load fluctuations. Measurements from real world applications show \u0000<inline-formula><tex-math>$pm$</tex-math></inline-formula>\u000012–13% voltage deviations for a generator based system and up to 20% for a inverter based system on a rapid load change event.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"66 5","pages":"1646-1654"},"PeriodicalIF":2.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142448456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}