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Transformer Vibration And Its Application To Condition Monitoring
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Book Synopsis Transformer Vibration and Its Application to Condition Monitoring by : Yuxing Wang
Download or read book Transformer Vibration and Its Application to Condition Monitoring written by Yuxing Wang and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The electrical power is an important part of daily life and a necessity for the development of modern industry. The dependency of a country's economic development on electrical power is growing rapidly. Consequently, planning, designing, constructing, and maintaining power delivery systems must keep pace with the escalating demand of such development. Power transformers are a key component of a power transmission system, and condition monitoring and failure diagnosis techniques are commonly required by transformer owners for reliability and maintenance purposes. Despite several decades of research into transformer vibration and condition monitoring techniques, state-of-the-art development in this area still falls short in the understanding of the mechanisms involved and in industry implementation. The objective of this thesis therefore is to investigate the vibration characteristics of a power transformer with and without structural damage and to develop a vibration-based transformer condition monitoring technique. It is hoped that this work could give a better understanding of transformer vibration and its application to condition monitoring. To that end, several aspects of transformer vibration are studied experimentally and numerically, including its excitation forces, modal characteristics, and vibration frequency responses. The finite element (FE) method is employed as the main approach for numerical analysis of the aforementioned aspects. The effect of the arrangement of ferromagnetic parts on the modelling of winding electromagnetic (EM) forces is discussed in detail with the purpose of improving its modelling accuracy. Special considerations, i.e., the anisotropic mechanical properties of core lamination, of transformer vibration modelling are summarised based on the traditional experimental modal analysis. Vibration features of a transformer with structural anomalies, especially with cases of winding failure, are investigated using a verified FE model. In addition, the frequency response function and its variations caused by structural anomalies are studied experimentally under both mechanical and electrical excitations. It is shown that a structural anomaly will produce shifts in the natural frequency and changes in the vibration response. The experimental results also demonstrate that the transformer mechanical resonance can be excited by internal electrical excitations, which enables operational modal analysis (OMA) and OMA-based online monitoring. An algorithm based on the time-domain NExt/ITD method is employed as an OMA technique to identify transformer modal parameters. The features of transformer vibration and operational conditions are considered in the proposed algorithm, which improves the identification accuracy in some cases. The identification method is also applied to the same transformer with core and winding anomalies. Results show that the OMA method is capable of identifying transformer modal parameters and thus can be utilised for online condition monitoring.
Book Synopsis Power Transformer Condition Monitoring and Diagnosis by : Ahmed Abu-Siada
Download or read book Power Transformer Condition Monitoring and Diagnosis written by Ahmed Abu-Siada and published by Energy Engineering. This book was released on 2018-01-31 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This must-read book on power transformer monitoring will incorporate current power transformer condition monitoring techniques from principles to practice. Each chapter will cover the fundamentals and theory of the topic, convey techniques to measure relevant parameters, and assess or interpret the results. The book will include factory acceptance tests, receiving end pre-commissioning tests, and commissioning tests. It will also include the limitations and challenges, and approaches to overcome these limitations.
Book Synopsis Recent Trends in the Condition Monitoring of Transformers by : Sivaji Chakravorti
Download or read book Recent Trends in the Condition Monitoring of Transformers written by Sivaji Chakravorti and published by Springer Science & Business Media. This book was released on 2013-10-21 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Vibration Characteristics of Power Transformers and Disk-type Windings by : Ming Jin
Download or read book Vibration Characteristics of Power Transformers and Disk-type Windings written by Ming Jin and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated] Power transformers are one of the key devices in the power industry. The reliability, quality, and economic cost of electrical power are affected by a transformer's health conditions. Most catastrophic failures of power transformers are caused by winding problems, which may lead to huge economic loss and serious environmental impact. Therefore, the faults of power transformers, especially winding faults, are of much concern and have been investigated extensively. This thesis focuses on a vibration-based condition monitoring method for power transformers. The advantages of this method lay in its on-line, non-invasive monitoring ability and real-time failure diagnosis. It uses vibration signals measured on the transformer tank to evaluate the health condition of the monitored transformer and to detect its potential failures. Successful evaluation and detection requires a clear understanding of the vibration characteristics of power transformers, in particular, the vibration features of different winding failure modes. The objective of this project is to provide some related experimental and theoretical information for improving existing vibration-based monitoring systems for power transformers. An integrated monitoring device, TranstethoscopeTM, is developed for use in the power industry. It has been installed on in-service power transformers for monitoring purposes. By analyzing monitoring data recorded from two different types of power transformers, it is found that the on-line vibration of transformers is highly dependent on the operating signals (input voltage and loading current). Therefore, a monitoring model for power transformers is established based on the System Identification Method. This model uses the transformer operating signals as the inputs and the on-line vibration of the transformer as the output to estimate the difference between the measured vibration and the predicted model output. This error is an indicator for evaluating the health condition of the transformer. From the practical application of this monitoring model to the two in-service power transformers, it is found that this model is more suitable for a power transformer with a relatively stable loading current, but its function is very limited on a transformer that bears frequent heavy loading impacts. Another shortcoming is that this model does not have a clear physical meaning and requires a large database for failure diagnosis.
Book Synopsis Proceedings of the 4th International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2019 by : Limin Jia
Download or read book Proceedings of the 4th International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2019 written by Limin Jia and published by Springer Nature. This book was released on 2020-04-07 with total page 869 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reflects the latest research trends, methods and experimental results in the field of electrical and information technologies for rail transportation, which covers abundant state-of-the-art research theories and ideas. As a vital field of research that is highly relevant to current developments in a number of technological domains, the subjects it covered include intelligent computing, information processing, Communication Technology, Automatic Control, etc. The objective of the proceedings is to provide a major interdisciplinary forum for researchers, engineers, academicians as well as industrial professionals to present the most innovative research and development in the field of rail transportation electrical and information technologies. Engineers and researchers in academia, industry, and the government will also explore an insight view of the solutions that combine ideas from multiple disciplines in this field. The volumes serve as an excellent reference work for researchers and graduate students working on rail transportation, electrical and information technologies.
Book Synopsis Condition Monitoring with Vibration Signals by : Hosameldin Ahmed
Download or read book Condition Monitoring with Vibration Signals written by Hosameldin Ahmed and published by John Wiley & Sons. This book was released on 2020-01-07 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an extensive, up-to-date treatment of techniques used for machine condition monitoring Clear and concise throughout, this accessible book is the first to be wholly devoted to the field of condition monitoring for rotating machines using vibration signals. It covers various feature extraction, feature selection, and classification methods as well as their applications to machine vibration datasets. It also presents new methods including machine learning and compressive sampling, which help to improve safety, reliability, and performance. Condition Monitoring with Vibration Signals: Compressive Sampling and Learning Algorithms for Rotating Machines starts by introducing readers to Vibration Analysis Techniques and Machine Condition Monitoring (MCM). It then offers readers sections covering: Rotating Machine Condition Monitoring using Learning Algorithms; Classification Algorithms; and New Fault Diagnosis Frameworks designed for MCM. Readers will learn signal processing in the time-frequency domain, methods for linear subspace learning, and the basic principles of the learning method Artificial Neural Network (ANN). They will also discover recent trends of deep learning in the field of machine condition monitoring, new feature learning frameworks based on compressive sampling, subspace learning techniques for machine condition monitoring, and much more. Covers the fundamental as well as the state-of-the-art approaches to machine condition monitoringguiding readers from the basics of rotating machines to the generation of knowledge using vibration signals Provides new methods, including machine learning and compressive sampling, which offer significant improvements in accuracy with reduced computational costs Features learning algorithms that can be used for fault diagnosis and prognosis Includes previously and recently developed dimensionality reduction techniques and classification algorithms Condition Monitoring with Vibration Signals: Compressive Sampling and Learning Algorithms for Rotating Machines is an excellent book for research students, postgraduate students, industrial practitioners, and researchers.
Book Synopsis Advances in Asset Management and Condition Monitoring by : Andrew Ball
Download or read book Advances in Asset Management and Condition Monitoring written by Andrew Ball and published by Springer Nature. This book was released on 2020-08-27 with total page 1566 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers select contributions from the 32nd International Congress and Exhibition on Condition Monitoring and Diagnostic Engineering Management (COMADEM 2019), held at the University of Huddersfield, UK in September 2019, and jointly organized by the University of Huddersfield and COMADEM International. The aim of the Congress was to promote awareness of the rapidly emerging interdisciplinary areas of condition monitoring and diagnostic engineering management. The contents discuss the latest tools and techniques in the multidisciplinary field of performance monitoring, root cause failure modes analysis, failure diagnosis, prognosis, and proactive management of industrial systems. There is a special focus on digitally enabled asset management and covers several topics such as condition monitoring, maintenance, structural health monitoring, non-destructive testing and other allied areas. Bringing together expert contributions from academia and industry, this book will be a valuable resource for those interested in latest condition monitoring and asset management techniques.
Download or read book Power and Energy written by Richard Kong and published by CRC Press. This book was released on 2015-05-06 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power and Energy contains 86 selected papers from the International Conference on Power and Energy (CPE 2014, Shanghai, China, 29-30 November 2014), and presents a wide range of topics:- Energy management, planning and policy-making- Energy technologies and environment- Energy prospects- Conventional and renewable power generation- Power system man
Book Synopsis Optical Sensing in Power Transformers by : Jun Jiang
Download or read book Optical Sensing in Power Transformers written by Jun Jiang and published by John Wiley & Sons. This book was released on 2020-12-02 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Handbook of Condition Monitoring by : B. K. N. Rao
Download or read book Handbook of Condition Monitoring written by B. K. N. Rao and published by Elsevier. This book was released on 1996 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardbound. The need to reduce costs has generated a greater interest in condition monitoring in recent years. The Handbook of Condition Monitoring gives an extensive description of available products and their usage making it a source of practical guidance supported by basic theory.This handbook has been designed to assist individuals within companies in the methods and devices used to monitor the condition of machinery and products.
Book Synopsis Condition Monitoring Using Computational Intelligence Methods by : Tshilidzi Marwala
Download or read book Condition Monitoring Using Computational Intelligence Methods written by Tshilidzi Marwala and published by Springer Science & Business Media. This book was released on 2012-01-23 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Condition Monitoring Using Computational Intelligence Methods promotes the various approaches gathered under the umbrella of computational intelligence to show how condition monitoring can be used to avoid equipment failures and lengthen its useful life, minimize downtime and reduce maintenance costs. The text introduces various signal-processing and pre-processing techniques, wavelets and principal component analysis, for example, together with their uses in condition monitoring and details the development of effective feature extraction techniques classified into frequency-, time-frequency- and time-domain analysis. Data generated by these techniques can then be used for condition classification employing tools such as: • fuzzy systems; rough and neuro-rough sets; neural and Bayesian networks;hidden Markov and Gaussian mixture models; and support vector machines.
Book Synopsis Transformer Ageing by : Tapan Kumar Saha
Download or read book Transformer Ageing written by Tapan Kumar Saha and published by John Wiley & Sons. This book was released on 2017-06-01 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: A one-stop guide to transformer ageing, presenting industrially relevant state-of-the-art diagnostic techniques backed by extensive research data Offers a comprehensive coverage of transformer ageing topics including insulation materials, condition monitoring and diagnostic techniques Features chapters on smart transformer monitoring frameworks, transformer life estimation and biodegradable oil Highlights industrially relevant techniques adopted in electricity utilities, backed by extensive research
Book Synopsis Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence by : W.H. Tang
Download or read book Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence written by W.H. Tang and published by Springer. This book was released on 2013-02-25 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, rapid changes and improvements have been witnessed in the field of transformer condition monitoring and assessment, especially with the advances in computational intelligence techniques. Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence applies a broad range of computational intelligence techniques to deal with practical transformer operation problems. The approaches introduced are presented in a concise and flowing manner, tackling complex transformer modelling problems and uncertainties occurring in transformer fault diagnosis. Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence covers both the fundamental theories and the most up-to-date research in this rapidly changing field. Many examples have been included that use real-world measurements and realistic operating scenarios of power transformers to fully illustrate the use of computational intelligence techniques for a variety of transformer modelling and fault diagnosis problems. Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence is a useful book for professional engineers and postgraduate students. It also provides a firm foundation for advanced undergraduate students in power engineering.
Book Synopsis Proceedings of MEACM 2020 by : Lifang Zheng
Download or read book Proceedings of MEACM 2020 written by Lifang Zheng and published by Springer Nature. This book was released on 2021-05-31 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the 4th International Conference on Mechanical Engineering and Applied Composite Materials (MEACM), held in Beijing, China on October 24-25, 2020. The conference brought together researchers from several countries and covered all major areas of mechanical engineering and applied composite materials, new applications and current trends. The topics covered include: structure and design, mechanical manufacturing and automation, robotics and mechatronics, mechanical behavior of nanomaterials, nanocomposites, and composite mechanics. Given its scope, the book offers a source of information and inspiration for researchers seeking to improve their work and gather new ideas for future developments.
Book Synopsis Transformer Condition Control by : Vasily Ya. Ushakov
Download or read book Transformer Condition Control written by Vasily Ya. Ushakov and published by Springer Nature. This book was released on 2021-09-01 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to one of the main problems of modern electrical power engineering—power transformer diagnostics. The first three chapters discuss the fundamentals: The first chapter presents the physical reasons for power transformers’ failures and the technical and economic consequences of disruption of the normal operation. The second chapter reviews the standard technologies for monitoring the state of the high-voltage transformers. The third chapter tells about monitoring the condition of transformer windings based on the pulse method. The fourth chapter presents the technologies for transformer windings condition controlled by means of nanosecond pulses. The stages of improving the pulsed method based on a short probing pulse of the nanosecond range, the results of experiments on identifying the radial and axial displacements of the winding, studies of the effect of the duration and shape of the probing pulse on the sensitivity of the diagnostic procedure, and the stages of developing a mathematical as well as physical model of a power transformer are consistently presented.
Book Synopsis Condition Monitoring and Control for Intelligent Manufacturing by : Lihui Wang
Download or read book Condition Monitoring and Control for Intelligent Manufacturing written by Lihui Wang and published by Springer Science & Business Media. This book was released on 2006-08-02 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Condition modelling and control is a technique used to enable decision-making in manufacturing processes of interest to researchers and practising engineering. Condition Monitoring and Control for Intelligent Manufacturing will be bought by researchers and graduate students in manufacturing and control and engineering, as well as practising engineers in industries such as automotive and packaging manufacturing.
Book Synopsis Soft Computing in Condition Monitoring and Diagnostics of Electrical and Mechanical Systems by : Hasmat Malik
Download or read book Soft Computing in Condition Monitoring and Diagnostics of Electrical and Mechanical Systems written by Hasmat Malik and published by Springer Nature. This book was released on 2020-01-17 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses a range of complex issues associated with condition monitoring (CM), fault diagnosis and detection (FDD) in smart buildings, wide area monitoring (WAM), wind energy conversion systems (WECSs), photovoltaic (PV) systems, structures, electrical systems, mechanical systems, smart grids, etc. The book’s goal is to develop and combine all advanced nonintrusive CMFD approaches on a common platform. To do so, it explores the main components of various systems used for CMFD purposes. The content is divided into three main parts, the first of which provides a brief introduction, before focusing on the state of the art and major research gaps in the area of CMFD. The second part covers the step-by-step implementation of novel soft computing applications in CMFD for electrical and mechanical systems. In the third and final part, the simulation codes for each chapter are included in an extensive appendix to support newcomers to the field.
