N.C. Jesus , B.D. Bonatto , R. Torquato , J.R. Cogo , L.M. Duarte , A.M. Laurentino , G.R. Santos
{"title":"在真空断路器开关和浪涌保护器应用过程中变压器故障分析的测量和模拟","authors":"N.C. Jesus , B.D. Bonatto , R. Torquato , J.R. Cogo , L.M. Duarte , A.M. Laurentino , G.R. Santos","doi":"10.1016/j.epsr.2025.112313","DOIUrl":null,"url":null,"abstract":"<div><div>This paper presents the results and expertise achieved during the monitoring and initial root cause diagnosis of systemic failures in dry-type transformers, which occurred during energization switching of vacuum circuit breakers (pre-strikes). Measurement results obtained during the fault investigation were utilized to effectively confirm the root cause and evaluate the performance of surge protectors. Measurements from 34.5 kV installations without any protection will be presented, as well as real cases involving the application of RC-type surge suppressors and, more recently, a practical application using only surge capacitors. A historical qualitative comparison was conducted, considering results from various measurements in industrial electrical systems. Simulation results, derived from the implementation of a vacuum circuit breaker model in the system using the electromagnetic transients program ATP, will also be presented.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112313"},"PeriodicalIF":4.2000,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Measurements and simulations in the analysis of transformer failures during vacuum circuit breaker switching and surge protector applications\",\"authors\":\"N.C. Jesus , B.D. Bonatto , R. Torquato , J.R. Cogo , L.M. Duarte , A.M. Laurentino , G.R. Santos\",\"doi\":\"10.1016/j.epsr.2025.112313\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This paper presents the results and expertise achieved during the monitoring and initial root cause diagnosis of systemic failures in dry-type transformers, which occurred during energization switching of vacuum circuit breakers (pre-strikes). Measurement results obtained during the fault investigation were utilized to effectively confirm the root cause and evaluate the performance of surge protectors. Measurements from 34.5 kV installations without any protection will be presented, as well as real cases involving the application of RC-type surge suppressors and, more recently, a practical application using only surge capacitors. A historical qualitative comparison was conducted, considering results from various measurements in industrial electrical systems. Simulation results, derived from the implementation of a vacuum circuit breaker model in the system using the electromagnetic transients program ATP, will also be presented.</div></div>\",\"PeriodicalId\":50547,\"journal\":{\"name\":\"Electric Power Systems Research\",\"volume\":\"251 \",\"pages\":\"Article 112313\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2025-10-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electric Power Systems Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0378779625009009\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electric Power Systems Research","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378779625009009","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Measurements and simulations in the analysis of transformer failures during vacuum circuit breaker switching and surge protector applications
This paper presents the results and expertise achieved during the monitoring and initial root cause diagnosis of systemic failures in dry-type transformers, which occurred during energization switching of vacuum circuit breakers (pre-strikes). Measurement results obtained during the fault investigation were utilized to effectively confirm the root cause and evaluate the performance of surge protectors. Measurements from 34.5 kV installations without any protection will be presented, as well as real cases involving the application of RC-type surge suppressors and, more recently, a practical application using only surge capacitors. A historical qualitative comparison was conducted, considering results from various measurements in industrial electrical systems. Simulation results, derived from the implementation of a vacuum circuit breaker model in the system using the electromagnetic transients program ATP, will also be presented.
期刊介绍:
Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview.
• Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation.
• Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design.
• Substation work: equipment design, protection and control systems.
• Distribution techniques, equipment development, and smart grids.
• The utilization area from energy efficiency to distributed load levelling techniques.
• Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.