Download or read book Partial Discharge Detection and Monitoring in Palm Oil written by Almawla Ahmed and published by LAP Lambert Academic Publishing. This book was released on 2015-06-09 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-voltage transformer is the most critical and expensive component in a power system network in order to ensure the stability of the system. Partial discharge (PD) detection is a technique widely used for high voltage equipment insulation condition monitoring and assessment. PD phenomenon causes gradual deterioration of the insulating materials, sometimes over a period of several years, leading perhaps to eventual failure. Detecting PD in power transformers is vital both in industries and utilities to avoid damage of high-voltage equipment. The objectives for this work are: To detect and analysis the PD activity using acoustic sensor (piezoelectric sensor) and capacitive sensor in natural palm-oil and to compare the sensitivity of the two sensors. The capacitive sensor and PZT sensors were immersed in palm oil tank fitted with two steel electrodes which were connected to range of high voltage (0-15KV) from high voltage source, the detecting signal that gained by the acoustic and electric sensors would pass through high pass filter to eliminate the noise range below 100-KHz then it is connected to the oscilloscope by wiring connections means.

Download or read book Intelligent Partial Discharge Diagnosis for Condition Monitoring written by Yu Han and published by LAP Lambert Academic Publishing. This book was released on 2011-09 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports on research into intelligent partial discharge (PD) diagnosis for turbogenerator condition monitoring (CM). PD activities occurring in generator stator windings and modern techniques for PD CM are introduced. Research is focused on graphical classification methods, especially for small-size, and incomplete PD database. The research work begins with study on feature extraction methods on different PD patterns, and automated pattern recognition methods involving conventional classifiers and neural networks. Laboratory tests are made to observe PD activities and produce PD database containing typical PD types on industrial model bars. A Hybrid Clustering Method (HCM) and an advanced Self-Organizing Map (SOM) are presented to provide graphical classification results where the relationship of new PD samples and historical samples can be visualized. The work confirms that the graphical classification methods can be used individually or combined with other methods to provide reliable diagnostic information.

Download or read book Innovative Computing Vol 1 Emerging Topics in Artificial Intelligence written by Jason C. Hung and published by Springer Nature. This book was released on 2023-06-02 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select peer-reviewed proceedings of the 6th International Conference on Innovative Computing (IC 2023). The contents focus on communication networks, business intelligence and knowledge management, web intelligence, and fields related to the development of information technology. The chapters include contributions on various topics such as databases and data mining, networking and communications, web and Internet of Things, embedded systems, soft computing, social network analysis, security and privacy, optical communication, and ubiquitous/pervasive computing. This volume will serve as a comprehensive overview of the latest advances in information technology for those working as researchers in both academia and industry.

Download or read book Science Abstracts written by and published by . This book was released on 1993 with total page 2332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theses on any subject submitted by the academic libraries in the UK and Ireland.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book India Power written by and published by . This book was released on 2006 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Transformers written by and published by Reclamation Bureau. This book was released on 2005 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: On cover: Reclamation, Managing Water in the West. Describes how transformers work, how they are maintained, and how to test and evaluate their condition.

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1982 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Insulating Liquids written by and published by ASTM International. This book was released on 1994 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alternative Liquid Dielectrics for High Voltage Transformer Insulation Systems written by U. Mohan Rao and published by John Wiley & Sons. This book was released on 2021-12-01 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference and guide on the usage of the alternative dielectric fluids for transformer insulation systems Liquid-filled transformers are one of the most important and expensive components involved in the transmission and distribution of power to industrial and domestic loads. Although petroleum-based insulating oils have been used in transformers for decades, recent environmental concerns, health and safety considerations, and various technical factors have increased the need for new alternative and biodegradable liquids. Alternative Liquid Dielectrics for High Voltage Transformer Insulation Systems is an up-to-date reference and guide on natural and synthetic ester-based biodegradable insulating liquids. Covering the operational behavior, performance analysis, and maintenance of transformers filled with biodegradable insulating liquids, this comprehensive resource helps researchers and utility engineers expand their knowledge of the benefits, challenges, and application of ester-filled transformers. In-depth chapters written by experienced researchers addresses critical topics including transformer condition monitoring, high voltage insulation testing, biodegradable insulating material processing and evaluation, and more. A unique and significant contribution to existing literature on the subject, this authoritative volume: • Covers condition monitoring, diagnostic testing, applications, maintenance, and in-service experiences • Explores current challenges and future prospects of ester-filled transformers • Discusses significant research progress and identifies the topics in need of further emphasis • Compares the differences and similarities between mineral oils and ester liquids • Includes in-depth behavioral observations and performance analysis of ester-based insulating liquids Alternative Liquid Dielectrics for High Voltage Transformer Insulation Systems: Performance Analysis and Applications is a must-have reference for utility engineers, electrical power utilities, transformer owners, manufacturers, and researchers.

Download or read book Engineering Dielectric Liquid Applications written by Issouf Fofana, Ph.D. ing. Chairholder and published by MDPI. This book was released on 2018-12-11 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Engineering Dielectric Liquid Applications" that was published in Energies

Download or read book Piezoelectric Transducers and Applications written by Antonio Arnau and published by Springer Science & Business Media. This book was released on 2004 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Piezoelectric Transducers and Applications provides a guide for graduate students and researchers to the current state of the art of this complex and multidisciplinary area. The book fills an urgent need for a unified source of information on piezoelectric devices and their astounding variety of existing and emerging applications. Some of the chapters focus more on the basic concepts of the different disciplines involved and are presented in a didactic manner. Others go deeper into the complex aspects of specific fields of research, thus reaching the technical level of a scientific paper. Among other topics resonant sensors, especially bulk acoustic wave thickness shear mode resonators, chemical and bio-sensors, as well as broadband ultrasonic systems are treated in-depth.

Download or read book Standard Methods for the Examination of Water and Wastewater written by American Public Health Association and published by . This book was released on 1981 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thomas Register of American Manufacturers and Thomas Register Catalog File written by and published by . This book was released on 1997 with total page 2010 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1970-71 includes manufacturers catalogs.

Download or read book Polarimetric Synthetic Aperture Radar written by Irena Hajnsek and published by Springer Nature. This book was released on 2021-03-24 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book focuses on the practical application of electromagnetic polarimetry principles in Earth remote sensing with an educational purpose. In the last decade, the operations from fully polarimetric synthetic aperture radar such as the Japanese ALOS/PalSAR, the Canadian Radarsat-2 and the German TerraSAR-X and their easy data access for scientific use have developed further the research and data applications at L,C and X band. As a consequence, the wider distribution of polarimetric data sets across the remote sensing community boosted activity and development in polarimetric SAR applications, also in view of future missions. Numerous experiments with real data from spaceborne platforms are shown, with the aim of giving an up-to-date and complete treatment of the unique benefits of fully polarimetric synthetic aperture radar data in five different domains: forest, agriculture, cryosphere, urban and oceans.