Download or read book Partial Discharge Detection and Diagnostics Using Double sided Measurement written by Jichao Chen and published by . This book was released on 2014 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial discharge detection and diagnostics have always been the major concerns of power cable quality evaluation. Based on the review of published literatures and the systems currently available on market, this ME thesis has proposed a new mathematical algorithm for double-sided PD measurement, which removes earth noise from the collected PD signals and localises the PD sources. This developed algorithm generally is comprised of wavelet de-noising, time domain reflectometry, time-of-arrival estimation and very low frequency cable testing criteria. It has been implemented on LabVIEW platform. PD signals are acquired by USB-5133 and then process through the algorithm. This system has a graphical user interface which is able to give users results of the de-noised signals from two cable ends and readings about the PD source location. This system has been tested at both signal and medium voltage levels. Signal level tests give results as expected that it has the minimum errors when the PDs occur near the centre of the cable and vice versa. It performs well for the PD signals with signal-to-noise ratio no less than 9.70 dB. Medium voltage level tests do not give sufficient results due to radiation phenomenon between two cable ends. However, by analysing the waveforms, it partially verifies the integrity of the developed system.
Download or read book Practical Partial Discharge Measurement on Electrical Equipment written by Greg C. Stone and published by John Wiley & Sons. This book was released on 2023-08-28 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical Partial Discharge Measurement on Electrical Equipment Accessible reference dealing with (partial discharge) PD measurement in all types of high voltage equipment using modern digital PD detectors Practical Partial Discharge Measurement on Electrical Equipment is a timely update in the field of partial discharges (PD), covering both holistic concepts and specific modern applications in one volume. The first half of the book educates the reader on what PD is and the general principles of how it is measured and interpreted. The second half of the book is similar to a handbook, with a chapter devoted to PD measurements in each type of high voltage (HV) equipment. These chapters contain specific information of the insulation system design, causes of PD in that equipment, off-line and on-line measurement methods, interpretation methods, and relevant standards. The work is authored by four well-known experts in the field of PD measurement who have published hundreds of technical papers on the subject and performed thousands of PD measurements on all the different types of HV equipment covered in the book. The authors have also had relationships with PD detector manufacturers, giving them key insights into test instruments and practical measurements. Sample topics covered in the work include: Physics of PD, discharge phenomena (contact sparking and vibration sparking), and an introduction to PD measurement (electrical, optical, acoustic, and chemical) Electrical PD detection (types of sensors), RF PD detection (antenna, TEV), and PD instrumentation and display Off-line and on-line PD measurements, general principles of PD interpretation, and laboratory PD testing of lumped test objects PD in different types of HV equipment (power cables, power transformers, air insulated metal-clad switchgear, rotating machines, gas-insulated switchgear, and more) For HV equipment OEMs, users of HV equipment, or employees of companies that provide PD testing services to clients, Practical Partial Discharge Measurement on Electrical Equipment is an essential reference to help understand general concepts about the topic and receive expert guidance during specific practical applications.
Download or read book Partial Discharges PD written by Norasage Pattanadech and published by John Wiley & Sons. This book was released on 2023-07-31 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: PARTIAL DISCHARGES (PD) — DETECTION, IDENTIFICATION AND LOCALIZATION Explore state-of-the-art partial discharge measurement techniques In Partial Discharges (PD) — Detection, Identification and Localization, a team of distinguished electrical engineers delivers a comprehensive treatment of the behavior, modeling, measurement, monitoring, localization, and evaluation of partial discharges. It includes coverage of all major advancements in the field that have occurred over the last few decades. It also discusses partial discharge phenomena, detection methods, and strategies for analyzing and processing collected data. Mechanisms of insulation failure are explored, as is the denoising of partial discharge measurement data and the localization of partial discharge in large, high-voltage equipment. Non-electric principles and procedures are discussed, and the book offers a variety of tables, figures, and photographs to illustrate the concepts discussed within. Partial Discharges(PD) also provides: A thorough introduction to the physical behavior of partial discharges, including their causes and classification Comprehensive modeling of partial discharge behavior, including classical and dipole discharges Practical discussions of the measurement of partial discharges, including the electrical method, partial discharge decoupling, and pre- and post-processing of partial discharges In-depth examinations of the monitoring of partial discharge behavior, including methods and realization Perfect for electrical engineers engaged in electrical power engineering, Partial Discharges (PD) will also earn a place in the libraries of research and development specialists employed in the manufacturing, quality testing and operation of electrical systems.
Download or read book Partial Discharge Detection in High voltage Equipment written by F. H. Kreuger and published by Butterworth-Heinemann. This book was released on 1989 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of current knowledge of electrical discharges that do not completely bridge the electrodes. Discharge detection, since 1945 and the use of new high voltage dielectrics, has grown into an indispensable tool for the evaluation of modern insulation. Topics covered include the behavior, detection and measurement of discharges, the choice of detection method and procedure, the location of discharges, and discharge detection in practice. Acidic paper. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Partial Discharge Diagnostics in Medium Voltage Cables written by Faisal Peer Mohamed and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the high voltage cables installed in the United Kingdom for power transmission and distribution are approaching the end of their designed life. This is likely to lead to an increased prevalence of circuit faults resulting directly from insulation degradation and breakdown due to ageing. This will lead to customer interruption and regulatory penalties. A program for the wholesale replacement of vast cable networks is impracticable, not economically viable and most likely unnecessary. A more pragmatic and affordable approach to extending the life time of these ageing assets, incorporating targeted cable replacement, may be achieved through the use ofcondition based maintenance strategies utilizing online partial discharge monitoring technologies. Partial discharges (PD) are the early symptoms of insulation degradation that can ultimately lead to complete breakdown of the insulation system.Presented in this thesis are novel contributions to the area of online PD diagnostics for underground medium voltage cables. The work encompasses various issues with installation of PD sensors in cable networks, data acquisition procedures and signal processing techniques for post processing of PD data. A novel approach of using power frequency current transformer for detecting PD is proposed. This approach is validated using laboratory tests and on-site trials using the PD monitoring hardware developed. PD source location using double ended method is widely accepted due to theaccuracy in discharge site location compare to single ended approach. However, this method is not widely used due to its complex system design, time synchronization and communication requirement between measurement units at both ends of the cable network. In this thesis, double ended PD source location system using a novel time based triggering logic is implemented in field programmable gate arrays with GPS. System design, laboratory results and on-site trials are presented. Denoising of PD signals using second generation wavelet transform are comparatively faster than classical wavelet based techniques. This second generation wavelet transform using kurtosis based thresholding is developed and tested using synthetic and on-site data. A PD signal interpretation algorithm is applied to analyse the data acquired from the 11kV PILC cable network from 33/11kV substation using the system developed.
Download or read book Selected Papers from 2018 IEEE International Conference on High Voltage Engineering ICHVE 2018 written by Issouf Fofana and published by MDPI. This book was released on 2021-03-04 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2018 IEEE International Conference on High Voltage Engineering (ICHVE 2018) was held on 10–13 September 2018 in Athens, Greece, organized by the National Technical University of Athens, Greece, and endorsed by the IEEE Dielectrics and Electrical Insulation Society. This conference has attracted a great deal of attention from international researchers in the field of high voltage engineering. This conference provided not only an excellent platform to share knowledge and experiences on high voltage engineering, but also the opportunity to present the latest achievements and different emerging challenges in power engineering, including topics related to ultra-high voltage, smart grids, and new insulation materials and their dielectric properties.
Download or read book Proceedings of the 21st International Symposium on High Voltage Engineering written by Bálint Németh and published by Springer Nature. This book was released on 2019-11-27 with total page 1569 pages. Available in PDF, EPUB and Kindle. Book excerpt: High voltage engineering is extremely important for the reliable design, safe manufacture and operation of electric devices, equipment and electric power systems. The 21st International Symposium on High Voltage Engineering, organized by the 90 years old Budapest School of High Voltage Engineering, provides an excellent forum to present results, advances and discussions among engineers, researchers and scientists, and share ideas, knowledge and expertise on high voltage engineering. The proceedings of the conference presents the state of the art technology of the field. The content is simultaneously aiming to help practicing engineers to be able to implement based on the papers and researchers to link and further develop ideas.
Download or read book Enhanced Diagnostic Procedures for Partial Discharge Measurement in Rotating Machines written by Simon Ashford Higgins and published by . This book was released on 1992 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of a Fast Computer Based Partial Discharge Diagnostic System written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial discharges cause progressive deterioration of insulating materials working in high voltage conditions and may lead ultimately to insulator failure. Experimental findings indicate that deterioration increases with the number of discharges and is consequently proportional to the magnitude and frequency of the applied voltage. In order to obtain a better understanding of the mechanisms of deterioration produced by partial discharges, instrumentation capable of individual pulse resolution is required. A new computer-based partial discharge detection system was designed and constructed to conduct long duration tests on sample capacitors. This system is capable of recording large number of pulses without dead time and producing valuable information related to amplitude, polarity, and charge content of the discharges. The operation of the system is automatic and no human supervision is required during the testing stage. Ceramic capacitors were tested at high voltage in long duration tests. The obtained results indicated that the charge content of partial discharges shift towards high levels of charge as the level of deterioration in the capacitor increases. Oliva, Jose R. and Karady, G. G. and Domitz, Stan Unspecified Center CAPACITORS; COMPUTER TECHNIQUES; DETERIORATION; ELECTRIC DISCHARGES; ELECTRICAL FAULTS; FAILURE ANALYSIS; INSULATION; INSULATORS; CERAMICS; ELECTRIC POTENTIAL; HIGH VOLTAGES; POLARITY...
Download or read book Journal of Research of the National Institute of Standards and Technology written by and published by . This book was released on 1997 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports NIST research and development in the physical and engineering sciences in which the Institute is active. These include physics, chemistry, engineering, mathematics, and computer sciences. Emphasis on measurement methodology and the basic technology underlying standardization.
Download or read book Proceedings of IEEE International Conference on Dielectric Liquids ICDL written by and published by . This book was released on 2005 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Partial Discharge Measurement as Diagnostic Tool for Power Cable Systems written by Bolarin Sikiru Oyegoke and published by . This book was released on 2001 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a PC based Partial Discharge Detection and Measurement System written by Alper Taşcı and published by . This book was released on 2002 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Partial Discharges in Electrical Power Apparatus written by Dieter König and published by . This book was released on 1993 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Voltage Test and Measuring Techniques written by Wolfgang Hauschild and published by Springer. This book was released on 2018-09-22 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of this book incorporates the recent remarkable changes in electric power generation, transmission and distribution. The consequences of the latest development to High Voltage (HV) test and measuring techniques result in new chapters on Partial Discharge measurements, Measurements of Dielectric Properties, and some new thoughts on the Shannon Theorem and Impuls current measurements. This standard reference of the international high-voltage community combines high voltage engineering with HV testing techniques and HV measuring methods. Based on long-term experience gained by the authors the book reflects the state of the art as well as the future trends in testing and diagnostics of HV equipment. It ensures a reliable generation, transmission and distribution of electrical energy. The book is intended not only for experts but also for students in electrical engineering and high-voltage engineering.
Download or read book Gaseous Dielectrics IX written by Loucas G. Christophorou and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gaseous Dielectrics IX covers recent advances and developments in a wide range of basic, applied, and industrial areas of gaseous dielectrics.
Download or read book Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials written by and published by . This book was released on 1991 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
