Download or read book Detection Recording and Analysis of Partial Discharge in Electrical Insulation Using Computer Methods written by Peter Anthony White and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection Recording and Analysis of Partial Discharges in Electrical Insulation Using Computer Methods written by P. A. White and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 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 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 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 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 Computer Vision and Information Technology written by K. V. Kale and published by I. K. International Pvt Ltd. This book was released on 2010 with total page 1061 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spread in 133 articles divided in 20 sections the present treatises broadly discusses: Part 1: Image Processing Part 2: Radar and Satellite Image Processing Part 3: Image Filtering Part 4: Content Based Image Retrieval Part 5: Color Image Processing and Video Processing Part 6: Medical Image Processing Part 7: Biometric Part 8: Network Part 9: Mobile Computing Part 10: Pattern Recognition Part 11: Pattern Classification Part 12: Genetic Algorithm Part 13: Data Warehousing and Mining Part 14: Embedded System Part 15: Wavelet Part 16: Signal Processing Part 17: Neural Network Part 18: Nanotechnology and Quantum Computing Part 19: Image Analysis Part 20: Human Computer Interaction

Download or read book Eeel Technical Accomplishments 1998 written by JoAnne M. Surette and published by DIANE Publishing. This book was released on 1999-09 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Electronics and Electrical Engineering Laboratory (EEEL), working in concert with other NIST Laboratories, is providing measurement and other generic technology critical to the competitiveness of the U.S. electronics industry and the U.S. electricity-equipment industry. This report summarizes selected technical accomplishments and describes activities conducted by the Lab in FY 1998. Also included are profiles of EEEL's organization, customer interactions, and long-term goals. Appendix includes crosswalk of EEEL programs and projects; EEEL FY1998 resources; EEEL FY1998 CRADAS; and EEEL organization chart.

Download or read book Publications of the National Institute of Standards and Technology Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1994 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modelling Simulation and Data Analysis in Acoustical Problems written by Claudio Guarnaccia and published by MDPI. This book was released on 2020-06-23 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling and simulation in acoustics is currently gaining importance. In fact, with the development and improvement of innovative computational techniques and with the growing need for predictive models, an impressive boost has been observed in several research and application areas, such as noise control, indoor acoustics, and industrial applications. This led us to the proposal of a special issue about “Modelling, Simulation and Data Analysis in Acoustical Problems”, as we believe in the importance of these topics in modern acoustics’ studies. In total, 81 papers were submitted and 33 of them were published, with an acceptance rate of 37.5%. According to the number of papers submitted, it can be affirmed that this is a trending topic in the scientific and academic community and this special issue will try to provide a future reference for the research that will be developed in coming years.

Download or read book Computer Aided Systems Theory EUROCAST 2017 written by Roberto Moreno-Díaz and published by Springer. This book was released on 2018-01-25 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set LNCS 10671 and 10672 constitutes the thoroughly refereed proceedings of the 16th International Conference on Computer Aided Systems Theory, EUROCAST 2017, held in Las Palmas de Gran Canaria, Spain, in February 2017. The 117 full papers presented were carefully reviewed and selected from 160 submissions. The papers are organized in topical sections on: pioneers and landmarks in the development of information and communication technologies; systems theory, socio-economic systems and applications; theory and applications of metaheuristic algorithms; stochastic models and applications to natural, social and technical systems; model-based system design, verification and simulation; applications of signal processing technology; algebraic and combinatorial methods in signal and pattern analysis; computer vision, deep learning and applications; computer and systems based methods and electronics technologies in medicine; intelligent transportation systems and smart mobility.

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 2019-10-31 with total page 1556 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 Conference Record of the IEEE International Symposium on Electrical Insulation written by and published by . This book was released on 1990 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection and Pattern Recognition of Partial Discharge in Electric Machine Coils with Pulsed Voltage Excitation written by Han Xiong and published by . This book was released on 2019 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: For over 80 years, partial discharges (PDs) have been monitored in traditional 50-/60-Hz medium- to high-voltage electric machines to detect and determine various types of defects in the insulation system. The PD pattern and changing trend revealed by the continuous monitoring have also been used as an indicator of insulation health condition. With the development of modern power electronics, an increasing amount of medium- to high-voltage electric machines are now driven by variable speed drives (VSDs) for higher efficiency and better control capability. The voltage excitation, instead of the traditional low-frequency sinusoidal voltage, becomes high-frequency pulsed voltages, or pulse-width-modulated (PWM) voltages. The short rise and fall times of the PWM voltages, or often referred to as the fast dV/dt, subject the insulation system to more severe electrical stresses. A prominent example is the reflected wave phenomenon when the reflected voltage at the machine terminals can reach up to twice the DC bus voltage, or even up to four times in extreme cases. Such overvoltages have been reported to cause premature winding insulation breakdown. The insulation condition monitoring using effective PD detection becomes vital in such applications using VSDs. The fast dV/dt, nevertheless, causes significant switching noise in the traditional electrical PD detectors such as the coupling capacitors, crippling their capabilities to effectively detect PD, especially for medium- to high-voltage machines. Even if PDs can be successfully measured, the traditional PD pattern recognition techniques for electric machines, such as phase-resolved analysis, are no longer applicable because such techniques focus on the phase information of the PD occurrence with respect to the AC voltage. For pulsed voltages, the voltage switching plays a far more significant role than the phase of the reference voltage. This work strives to tackle the challenges in the detection and pattern recognition of PDs in electric machine insulation systems with pulsed voltage excitations. First a PD detection platform has been established to effectively detect and quantify PD events with pulsed voltage excitations. This platform employs nine sensors catering to five different PD physical manifestations, including electrical current, electromagnetic wave, optical light emission, acoustic ultrasound emission, and chemical ozone emission. PDs have been successfully and accurately measured for three types of samples: twisted pairs made of magnet wires, hand-wound stator coils, and professionally fabricated medium-voltage form-wound coils. Further a PD data processing procedure dedicated for data collected under pulsed voltages has been matured. Various machine learning algorithms and signal processing techniques are employed to implement feature extraction and pattern recognition from the collected PD data. The pattern unveiled facilitates the classification of PD pulses from different sources and locations. Moreover, the PD characteristics and patterns are investigated with pulsed voltage excitations of different parameters such as dV/dt. The effects of pulsed voltages, when compared with power-line-frequency AC voltage excitation, are hence demonstrated. Preliminary lifetime tests are performed on the twisted pair samples. The impact of recurring PDs on the lifetime of the low-voltage electric machine insulation system is further discussed in this dissertation.

Download or read book Condition Monitoring of Composite Insulator Using PD Analysis written by Ida Ayu Dwi Giriantari and published by LAP Lambert Academic Publishing. This book was released on 2009-09 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written based on study that has been performed with the aim of investigating the use of the partial discharge (PD)measurement technique for use as an assessment tool of the composite insulator condition. A computer-based discharge analyser was utilised to study the phase-resolved PD patterns and their statistical distributions, and also PD scatter plots. The full PD impulse waveforms with their frequency spectra were also studied by using a high frequency current transformer (HF-CT) to be able to study a wide range of frequency components of the PD signals and to study the possibility of doing on-line PD measurement in service using such a method. The results of the computer discharge analyser have shown a quite good correlation to change of the insulator surface condition. It was also found when high frequency components appeared, surface deterioration could be expected to have occurred. The use of PD measurements in identifying artificial defects on composite insulators found that PD detection of such defects also gave an indication of location of hole type defects on the insulator.

Download or read book IMTC Proceedings written by and published by . This book was released on 1997 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: