Power Transformer Online Monitoring Using Electromagnetic Waves
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Power Transformer Online Monitoring Using Electromagnetic Waves
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Author : Gevork B. Gharehpetian
language : en
Publisher: Academic Press
Release Date : 2023-02-09
Power Transformer Online Monitoring Using Electromagnetic Waves written by Gevork B. Gharehpetian and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-02-09 with Technology & Engineering categories.
Power Transformer Online Monitoring using Electromagnetic Waves explores how to use electromagnetic wave technology and remote monitoring systems to predict and localize costly mechanical defects and partial discharge challenges in high voltage transformer windings. This innovative approach brings several potential benefits compared with conventional techniques such as frequency response analysis, including impermeability to ambient noise, and online implementation capability. This book reviews both fundamental and state-of-the-art information about all key aspects of condition monitoring using electromagnetic waves. It addresses the simulation of power transformers in CST environment while also explaining the theoretical background of boundary conditions used. Chapters review how to achieve practical online implementation, reliable diagnosis, asset management and remnant life estimation. Partial discharge detection is also discussed. - Discusses the advantages and disadvantages of the electromagnetic wave method in comparison with classical monitoring methods - Explores how to design and implement power transformer monitoring systems using electromagnetic waves - Investigates partial discharge detection and localization in addition to the partial discharge emission effects on defect detection
Measurement Of Partial Discharges In Power Transformers Using Electromagnetic Signals
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Author : Sebastian Coenen
language : en
Publisher: BoD – Books on Demand
Release Date : 2012-08-17
Measurement Of Partial Discharges In Power Transformers Using Electromagnetic Signals written by Sebastian Coenen and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-17 with Technology & Engineering categories.
Partial discharges within power transformers emit electromagnetic waves. The current thesis aims to provide fundamental knowledge about measuring and interpretation of the electromagnetic signals. Investigations in laboratory are confirmed by several case studies. The applicability using electromagnetic signals for partial discharge measurements on transformer in the field is demonstrated under real test conditions.
Calibration Methods For Reproducible And Comparable Electromagnetic Partial Discharge Measurements In Power Transformers
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Author : Martin Siegel
language : en
Publisher: BoD – Books on Demand
Release Date : 2020-11-20
Calibration Methods For Reproducible And Comparable Electromagnetic Partial Discharge Measurements In Power Transformers written by Martin Siegel and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-20 with Technology & Engineering categories.
The reliability of electrical energy networks depends on the quality and availability of their electrical equipment, e.g., power transformers. Local failures inside their insulation can lead to breakdowns resulting in high outage and penalty costs. To prevent these destructive events, power transformers are tested for partial discharge (PD) activity in a routine test before shipment. Furthermore, PD activity can be evaluated as a diagnostic measurement on-site (on-line or off-line) or be constantly monitored during service using the ultra-high frequency (UHF) method. In this thesis, a calibration procedure is proposed for the UHF method used in power transformers, which is lacking so far. The calibration process is required to ensure both reproducibility and comparability of UHF measurements. Only a calibrated UHF measurement procedure can be deemed reliable and eventually be introduced to supplement in (site-)acceptance tests of power transformers. The proposed calibration method considers two factors: The influence of the UHF sensors' sensitivity and that of the UHF instrument characteristics, including accessories like cables, pre-amplifier, etc. The UHF instruments' influence is corrected by using a defined and invariable test signal as a reference for all recording devices comparable to the calibration method used in IEC 60270 for electrical PD measurement. The sensitivity of the UHF sensor is addressed by a characterization of UHF sensors using the antenna factor (AF) measured in a special reproducible setup, i.e., a GTEM cell. In this thesis, a self-built GTEM cell is presented, which is oil-filled to address the environmental conditions inside a transformer where the sensor will be used. With such a cell, influences on the AF of UHF sensors are investigated, and it is shown that sensor sensitivities measured in an air-filled cell can be corrected to the oil environment. A practical evaluation of the proposed calibration procedure is performed in a laboratory setup on a distribution transformer with different UHF instruments and sensors using artificial PD signals and real high voltage driven PD sources. Finally, this thesis identifies future research topics, which may be needed to improve the proposed UHF calibration procedure for power transformers and the UHF method in general.
Power Transformer Diagnostics Monitoring And Design Features
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Author : Issouf Fofana, Ph.D. ing. Chairholder
language : en
Publisher: MDPI
Release Date : 2019-01-09
Power Transformer Diagnostics Monitoring And Design Features written by Issouf Fofana, Ph.D. ing. Chairholder and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-09 with Computers categories.
This book is a printed edition of the Special Issue "Power Transformer Diagnostics, Monitoring and Design Features" that was published in Energies
Electromagnetic Transients In Transformer And Rotating Machine Windings
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Author : Su, Charles Q.
language : en
Publisher: IGI Global
Release Date : 2012-07-31
Electromagnetic Transients In Transformer And Rotating Machine Windings written by Su, Charles Q. and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-31 with Technology & Engineering categories.
"This book explores relevant theoretical frameworks, the latest empirical research findings, and industry-approved techniques in this field of electromagnetic transient phenomena"--Provided by publisher.
Optical Sensing In Power Transformers
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Author : Jun Jiang
language : en
Publisher: John Wiley & Sons
Release Date : 2020-12-02
Optical Sensing In Power Transformers written by Jun Jiang and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-02 with Technology & Engineering categories.
A cutting-edge, advanced level, exploration of optical sensing application in power transformers Optical Sensing in Power Transformers is filled with the critical information and knowledge on the optical techniques applied in power transformers, which are important and expensive components in the electric power system. Effective monitoring of systems has proven to decrease the transformer lifecycle cost and increase a high level of availability and reliability. It is commonly held that optical sensing techniques will play an increasingly significant role in online monitoring of power transformers. In this comprehensive text, the authors—noted experts on the topic—present a scholarly review of the various cutting-edge optical principles and methodologies adopted for online monitoring of power transformers. Grounded in the authors' extensive research, the book examines optical techniques and high-voltage equipment testing and provides the foundation for further application, prototype, and manufacturing. The book explores the principles, installation, operation, condition detection, monitoring, and fault diagnosis of power transformers. This important text: Provides a current exploration of optical sensing application in power transformers Examines the critical balance and pros and cons of cost and quality of various optical condition monitoring techniques Presents a wide selection of techniques with appropriate technical background Extends the vision of condition monitoring testing and analysis Treats condition monitoring testing and analysis tools together in a coherent framework Written for researchers, technical research and development personnel, manufacturers, and frontline engineers, Optical Sensing in Power Transformers offers an up-to-date review of the most recent developments of optical sensing application in power transformers.
Digitalization Of Electrical Power Engineering
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Author : Vasily Ya. Ushakov
language : en
Publisher: Springer Nature
Release Date : 2025-08-19
Digitalization Of Electrical Power Engineering written by Vasily Ya. Ushakov and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-08-19 with Technology & Engineering categories.
This book aims to provide readers with practical knowledge of the fundamentals of the “digital transition” concept, tools for designing and managing the operation of smart grids and substations, and critical issues in modernizing the energy sector. The inevitable transformation of the electric power industry is moving toward digitalization, which has taken the form of the concept of "Intelligent (smart) grids" (sometimes called "Digital Transition"). This has required coordinated work not only from the energy industry, but also from other stakeholders (government agencies, private firms, utilities, scientific and educational institutions, etc.) to solve numerous problems that arise during the transition to this advanced technology. It is obvious that the development of new components of energy systems, such as smart meters, monitoring and geolocation equipment, new disaster recovery systems, and energy storage systems, should be supplemented by the creation of the necessary communication infrastructure, modernization of existing network components, implementation of relevant regulations, training of highly qualified personnel. The book covers all the main tasks and ways to solve them for the implementation of this technology. It summarizes materials from numerous monographs, scientific articles, and conference reports discussing these issues.
Electromagnetic Analysis And Condition Monitoring Of Synchronous Generators
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Author : Hossein Ehya
language : en
Publisher: John Wiley & Sons
Release Date : 2022-12-06
Electromagnetic Analysis And Condition Monitoring Of Synchronous Generators written by Hossein Ehya and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-06 with Technology & Engineering categories.
Electromagnetic Analysis and Condition Monitoring of Synchronous Generators Discover an insightful and complete overview of electromagnetic analysis and fault diagnosis in large synchronous generators In Electromagnetic Analysis and Condition Monitoring of Synchronous Generators, a team of distinguished engineers delivers a comprehensive review of the electromagnetic analysis and fault diagnosis of synchronous generators. Beginning with an introduction to several types of synchronous machine structures, the authors move on to the most common faults found in synchronous generators and their impacts on performance. The book includes coverage of different modeling tools, including the finite element method, winding function, and magnetic equivalent circuit, as well as various types of health monitoring systems focusing on the magnetic field, voltage, current, shaft flux, and vibration. Finally, Electromagnetic Analysis and Condition Monitoring of Synchronous Generators covers signal processing tools that can help identify hidden patterns caused by faults and machine learning tools enabling automated condition monitoring. The book also includes: A thorough introduction to condition monitoring in electric machines and its importance to synchronous generators Comprehensive explorations of the classification of synchronous generators, including armature arrangement, machine construction, and applications Practical discussions of different types of electrical and mechanical faults in synchronous generators, including short circuit faults, eccentricity faults, misalignment, core-related faults, and broken damper bar faults In-depth examinations of the modeling of healthy and faulty synchronous generators, including analytical and numerical methods Perfect for engineers working in electrical machine analysis, maintenance, and fault detection, Electromagnetic Analysis and Condition Monitoring of Synchronous Generators is also an indispensable resource for professors and students in electrical power engineering.
Foundations And Frontiers In Computer Communication And Electrical Engineering
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Author : Aritra Acharyya
language : en
Publisher: CRC Press
Release Date : 2016-05-05
Foundations And Frontiers In Computer Communication And Electrical Engineering written by Aritra Acharyya and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-05 with Computers categories.
The 3rd International Conference on Foundations and Frontiers in Computer, Communication and Electrical Engineering is a notable event which brings together academia, researchers, engineers and students in the fields of Electronics and Communication, Computer and Electrical Engineering making the conference a perfect platform to share experience, f
Recent Trends In The Condition Monitoring Of Transformers
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Author : Sivaji Chakravorti
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-10-21
Recent Trends In The Condition Monitoring Of Transformers written by Sivaji Chakravorti and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-21 with Business & Economics categories.
Recent Trends in the Condition Monitoring of Transformers reflects the current interest in replacing traditional techniques used in power transformer condition monitoring with non-invasive measures such as polarization/depolarization current measurement, recovery voltage measurement, frequency domain spectroscopy and frequency response analysis. The book stresses the importance of scrutinizing the condition of transformer insulation which may fail under present day conditions of intensive use with the resulting degradation of dielectric properties causing functional failure of the transformer. The text shows the reader how to overcome the key challenges facing today’s maintenance policies, namely: The selection of appropriate techniques for dealing with each type of failure process accounting for the needs of plant owners, plant users and wider society; and Cost-efficiency and durability of effect. Many of the failure-management methods presented rely on the fact that most failures give warning when they are imminent. These potential failures give rise to identifiable physical conditions and the novel approaches described detect them so that action can be taken to avoid degeneration into full-blown functional failure. This “on-condition” maintenance means that equipment can be left in service as long as a specified set of performance standards continue to be met, avoiding the costly downtime imposed by routine and perhaps unnecessary maintenance but without risking equally expensive failure. Recent Trends in the Condition Monitoring of Transformers will be of considerable interest to both academic researchers in power systems and to engineers working in the power generation and distribution industry showing how new and more efficient methods of fault diagnosis and condition management can increase transformer efficiency and cut costs.