Corona

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A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph. (Wikipedia.org)






Conferences related to Corona

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2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)

The purpose of this conference is to provide a platform for researchers, scientists and engineers from all over the world to exchange ideas and discuss recent progress in electrical insulation, dielectric and practical applications. The focus of the conference is on dielectrics, its phenomena and applications in developing technologies such as nanotechnology, dielectric for superconductivity, dielectric discharges and others.

  • 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)

    The IEEE International Conference on Properties and Applications of Dielectric Materials (ICPADM) is devoted to dielectrics and electrical insulation research. It attracts experts from around the world, and particularly from the fast growing economies of the Pacific Region.


2012 IEEE International Conference on Condition Monitoring and Diagnosis (CMD)

Condition monitoring and diagnosis for power equipments and power systems,power plants, dielectric materials and their aging mechanisms, degradation assessment for power system, application of information and communication technologies for condition monitoring and diagnosis, tropical climate and other related issues including recycling, reuse and mitigation,strategic planning and management for condition monitoring and diagnosis.

  • 2008 International Conference on Condition Monitoring and Diagnosis (CMD)

    Condition Monitoring and Diagnosis for Power Plants Condition Monitoring and Diagnosis of HV Power Apparatus and Power System Electrical, Mechanical, Thermal and Chemical Failure Phenomena Dielectric Materials Aging and Failure Mechanism Advanced Sensing Technologies for Condition Monitoring and Diagnosis Application of Artificial Intelligence for Data Mining and Condition Assessment Applications of Information Technology for Asset Management Strategic Planning and Management for Condition Monitoring


2012 IEEE International Conference on Power System Technology - (POWERCON 2012)

The theme of this conference is Towards Smarter Resilient and Economic Power Systems . This is topical in the context of emerging trends of Smart Grids; resilience of electricity infrastructure to recent earthquakes, floods, nuclear-meltdown in the Asia-Pacifc region; and, trends towards Emission Trading Scheme and increased participation of private capital markets into electricity generation. A flavour of this theme in the context of New Zealand will be highlight to all our international participants.

  • 2010 International Conference on Power System Technology - (POWERCON 2010)

    distributed generation, renewables generation and its integration into power systems, UHV transmission, wide area interconnections, development of smart grid, energy storage, energy saving and emission reduction.

  • 2008 Joint International Conference on Power System Technology (POWERCON) and IEEE Power India Conference

    State-of-the-art lectures and tutorials by experts, and papers by practicing Engineers and Researchers will be presented in the areas of Power System Analysis , Computing and Economics, Modelling and Dynamic Performance, FACTS and HVDC, Restructured Energy Systems, Control and Operation, Communication and Control, Relaying and Protection, Energy Management System and Distribution Automation, Applications of Power Electronics and Power Quality, Distributed Generation & Renewable Energy Sources

  • 2006 International Conference on Power System Technology - (POWERCON 2006)


2012 International Conference on High Voltage Engineering and Application (ICHVE)

This conference can provide an excellent platform to share knowledge and experiences on high voltage engineering, and present the advices on the construction and maintenance of UHV transmission lines in China.

  • 2010 International Conference on High Voltage Engineering and Application (ICHVE)

    The current demands for a large amount of electrical energy are resulting in new strategies for developing high voltage power systems, transmission lines, substations, and appropriate equipment. In many countries, the new energy strategies require the planning and construction of UHV ac and dc transmission systems. The ICHVE 2010 will provide an excellent opportunity for high voltage engineering scientists, researchers, faculty, industrial representatives and students to share their state-of-the-art rese

  • 2008 International Conference on High Voltage Engineering and Application (ICHVE)

    We hope this conference can not only provide an excellent platform to share knowledge and experiences on high voltage engineering, but also present the advices on the construction of UHV transmission lines in China. Topics include but not restricted to areas from transients and EMC, new insulation materials, outdoor insulation, intelligent systems in HV system to measurement techniques, aging, condition monitoring, UHV technology and related areas about high voltage equipment.


2011 Conference on Lasers and Electro-Optics (CLEO)

CLEO, the Conference on Lasers and Electro-Optics, formerly known as CLEO/QELS, serves as the premier international forum for scientific and technical optics. The CLEO: 2011 Conference unites the fields of lasers and opto-electronics by bringing together all aspects of laser technology, from basic research to industry applications.


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Periodicals related to Corona

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Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.


Electrical Insulation Magazine, IEEE

The magazine covers theory, analysis, design (computer-aided design), and practical implementation of circuits, and the application of circuit theoretic techniques to systems and to signal processing. Content is written for the spectrum of activities from basic scientific theory to industrial applications.


Industry Applications, IEEE Transactions on

The development and application of electric systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; the encouragement of energy conservation; the creation of voluntary engineering standards and recommended practices.


Plasma Science, IEEE Transactions on

Plasma science and engineering, including: magnetofluid dynamics and thermionics; plasma dynamics; gaseous electronics and arc technology; controlled thermonuclear fusion; electron, ion, and plasma sources; space plasmas; high-current relativistic electron beams; laser-plasma interactions; diagnostics; plasma chemistry and colloidal and solid-state plasmas.


Power Delivery, IEEE Transactions on

Research, development, design, application, construction, the installation and operation of apparatus, equipment, structures, materials, and systems for the safe, reliable, and economic delivery and control of electric energy for general industrial, commercial, public, and domestic consumption.


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Xplore Articles related to Corona

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Behavior of water droplet on polymer material and the influence on discharge characteristics

N. Arise; H. Nishioka; Y. Okraku-Yienkyi; M. Otsubo; C. Honda 1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319), 1999

To clarify the influence of a water droplet on discharge characteristics, water droplet was put on the polymer and the current and voltage characteristics of corona discharge was investigated under the application of AC voltage, using two different types of electrode systems (plane with needle to plane, needle to plane). The behavior of the water droplet was also investigated by ...


Analysis of genome signature strength of SARS coronavirus using Self-Organizing Map neural network

Francis Thamburaj; Gopinath Ganapathy 2010 International Conference on Communication and Computational Intelligence (INCOCCI), 2010

The nucleotide usage patterns vary not only from organism to organism, but also between genes in the same genome. Each genome has its own characteristics. This unique identity, called genome signature, of a genome is multidimensional. One of the ways to probe into this area is to analyze the nucleotide sequence composition of the genome. In this paper, the nucleotide ...


IEEE standards for prognostics and health management

John W. Sheppard; Mark A. Kaufman; Timothy J. Wilmering 2008 IEEE AUTOTESTCON, 2008

Recently, operators of complex systems such as aircraft, power plants, and networks, have been emphasizing the need for online health monitoring for purposes of maximizing operational availability and safety. The discipline of prognostics and health management (PHM) is being formalized to address the information management and prediction requirements for addressing these needs. In this paper, we will explore how standards ...


Plasma-driven catalyst process for the decomposition of VOCs

Hyun-Ha Kirn; Seung-Min Oh; A. Ogata; S. Futamura Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting., 2004

This paper describes the decomposition of volatile organic compounds (VOCs), such as benzene, formic acid, oxylene, m-xylene, p-xylene, and toluene, using plasma-driven catalyst (PDC) reactor. The behaviors of different VOCs were compared in terms of decomposition efficiency, carbon balance, reaction kinetics, and CO2 selectivity. In contrast to the conventional reactors, the decomposition of VOCs using the PDC reactor showed no ...


Prediction of long-line radio-interference field from measurements on multiconductor short-line

S. Cristina; M. D'amore IEE Proceedings C - Generation, Transmission and Distribution, 1983

A general method for predicting the long-line radio-noise field from measurements made on short multiconductor test line is presented. The method uses the measured values of the corona current and magnetic field, and the computed transform operators. These operators are obtained by means of an algorithm, based on the lattice technique, which takes account of the radio- frequency corona current ...


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Educational Resources on Corona

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eLearning

Behavior of water droplet on polymer material and the influence on discharge characteristics

N. Arise; H. Nishioka; Y. Okraku-Yienkyi; M. Otsubo; C. Honda 1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319), 1999

To clarify the influence of a water droplet on discharge characteristics, water droplet was put on the polymer and the current and voltage characteristics of corona discharge was investigated under the application of AC voltage, using two different types of electrode systems (plane with needle to plane, needle to plane). The behavior of the water droplet was also investigated by ...


Analysis of genome signature strength of SARS coronavirus using Self-Organizing Map neural network

Francis Thamburaj; Gopinath Ganapathy 2010 International Conference on Communication and Computational Intelligence (INCOCCI), 2010

The nucleotide usage patterns vary not only from organism to organism, but also between genes in the same genome. Each genome has its own characteristics. This unique identity, called genome signature, of a genome is multidimensional. One of the ways to probe into this area is to analyze the nucleotide sequence composition of the genome. In this paper, the nucleotide ...


IEEE standards for prognostics and health management

John W. Sheppard; Mark A. Kaufman; Timothy J. Wilmering 2008 IEEE AUTOTESTCON, 2008

Recently, operators of complex systems such as aircraft, power plants, and networks, have been emphasizing the need for online health monitoring for purposes of maximizing operational availability and safety. The discipline of prognostics and health management (PHM) is being formalized to address the information management and prediction requirements for addressing these needs. In this paper, we will explore how standards ...


Plasma-driven catalyst process for the decomposition of VOCs

Hyun-Ha Kirn; Seung-Min Oh; A. Ogata; S. Futamura Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting., 2004

This paper describes the decomposition of volatile organic compounds (VOCs), such as benzene, formic acid, oxylene, m-xylene, p-xylene, and toluene, using plasma-driven catalyst (PDC) reactor. The behaviors of different VOCs were compared in terms of decomposition efficiency, carbon balance, reaction kinetics, and CO2 selectivity. In contrast to the conventional reactors, the decomposition of VOCs using the PDC reactor showed no ...


Prediction of long-line radio-interference field from measurements on multiconductor short-line

S. Cristina; M. D'amore IEE Proceedings C - Generation, Transmission and Distribution, 1983

A general method for predicting the long-line radio-noise field from measurements made on short multiconductor test line is presented. The method uses the measured values of the corona current and magnetic field, and the computed transform operators. These operators are obtained by means of an algorithm, based on the lattice technique, which takes account of the radio- frequency corona current ...


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IEEE.tv Videos

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IEEE-USA E-Books

  • Solar Image Processing and Analysis

    This chapter contains sections titled: Automatic Extraction of Filaments Solar Flare Detection Solar Corona Mass Ejection Detection References

  • Description of Stator Items

    This chapter contains sections titled: Cleanliness of Bore Air/Gas Ducts Clogged/Unclogged Iron Oxide Deposits Hardware Condition High-Voltage Bushings Stand-Off Insulators Bushing Vents Greasing/Red Oxide Deposits on Core Bolts and Spring Washers Space Heaters Fan-Baffle Support Studs Heat Exchanger Cleanliness and Leaks Hydrogen Desiccant/Dryer Core-Compression (ldquo;Bellyrdquo;) Belts Bearing Insulation (at Pedestal or Babbitt) Coil Cleanliness (including water cooled windings) Blocking Condition Ties Between Coils Ties to Surge-Rings Surge-Ring Insulation Condition Surge-Rings Support Assembly Additional End-Winding Support Hardware RTDs and TCs Wiring Hardware Asphalt Bleeding/Soft Spots Tape Separation/Girth Cracking Insulation Galling/Necking Beyond Slot Insulation Bulging into Air Ducts Insulation Condition Circumferential Bus Insulation Corona Activity Wedges Condition Wedges Slipping Out Fillers Slipping Out Bars Bottomed in Slot Laminations Bent/Broken in Bore Laminations Bulging into Air Ducts Terminal Box Current Transformer (CT) Condition Bushing-Well Insulators and H2 Sealant Condition End-Winding Expansion-Bearing-Bolts Condition (Round-Rotor Mach ines) This chapter contains sections titled: References

  • Applications to Lightning Surge Protection Studies

    This chapter reviews representative applications of the finite-difference time domain method (FDTD) method to lightning electromagnetic pulse and surge simulations. The applications reviewed include lightning electromagnetic fields at close and far distances, lightning surges on overhead power transmission line (TL) conductors and towers, lightning surges on overhead distribution and telecommunication lines, the lightning electromagnetic environment in power substations, and lightning surges in wind-turbine- generator towers. It also includes lightning surges in photovoltaic arrays, the lightning electromagnetic environment in electric vehicles, the lightning electromagnetic environment in airborne vehicles, lightning surges and electromagnetic environment in buildings, and surges on grounding electrodes. When an overhead ground wire of a TL is struck by lightning, corona discharge will occur on this wire. Corona discharge around the ground wire reduces its characteristic impedance and increases the coupling between the ground wire and phase conductors.

  • Methods of HighPower Electromagnetics

    High-power electromagnetics (HPE) treats the common characteristics of those areas of electromagnetics that require consideration of nonlinear processes in the generation or coupling of the HPE fields. Predictions of HPE processes normally require simultaneous solution of Maxwell's equations and equations governing the behavior of the air or other gas in breakdown conditions. That breakdown is in response to the local fields in the air, and can be enhanced by geometry. Common sources of these high fields include lightning, electromagnetic pulse and related phenomena, high-power microwave sources, and other discharges, including electrostatic discharge (ESD). The discharges may take the form of a corona or a long spark. They may be enhanced by local ionizing conditions, like those caused by a nuclear explosion or within a thundercloud. This paper will review the basic concepts and applications of HPE and present some examples.

  • Fundamentals

    This chapter contains sections titled: Introduction U.S. and International Standards Insulation Systems and Service Life UL Standards for Insulation Systems Material Aging and Breakdown Partial Discharge (Corona) Space Charges Radiation Dipole Moment and Polarization Material Selection Steps Temperature Index of Dielectric Materials Standard Tests for Dielectric Materials SI System for Metric Practice (ASTM E 380)

  • Becoming Real

    This chapter contains sections titled: Automatic Speech Recognition Takes Off, Making Things Real, Speaking to Your Personal Computer, The Wildfire Effect, Why Don't You Just Tell Me?, Controlling Errors, Corona and Altech, Nuance and SpeechWorks, The Art of Speech Design, Inviting Computers to Dinner, Products and Solutions, How May I Help You?

  • Modeling Electron Impact Ionization

    Electron impact ionization is the mainstay for plasma-based flow control actuators because it actuates in less than microseconds and the electrode configuration can be made nonintrusive to oncoming stream. In addition, when the actuator is not needed, unlike most mechanical flow control devices, it will not be parasitic and degrade performance of aerospace vehicles. The space charges induce an additional electric field potential that makes it different from the corona discharge. This chapter presents the best physics-based, multifluid model for the electron impact ionization. The physics for electron impact ionization is well known through the luminary contributions by Townsend, the ionization is evolving from the electrons collision, secondary emission, and avalanche. The secondary emission from cathode arises as controlling mechanism for all electron impact ionization. A high concentration of positive charges over an electrode creates an extremely high electrical field potential, which is comparable to the magnitude in a nuclei.

  • Introduction

    This chapter contains sections titled: Electric Charge and Discharge Electric and Magnetic Fields and Electromagnetics Dielectric and Electrical Insulation Electrical Breakdown Corona, Streamer and Aurora Capacitance and Capacitor References

  • Field Dependent behavior of Air and Other Gaseous Dielectrics

    This chapter contains sections titled: Fundamentals of Field Assisted Generation of Charge Carriers Breakdown of Atmospheric Air in Uniform and Weakly Nonuniform Fields Breakdown in Extremely Nonuniform Fields and Corona Electric Arcs and Their Characteristics Properties of Sulphurhexafluoride, SF6 Gas and Its Application in Electrical Installations References

  • Experimental Investigation on Unipolar Ion Flows

    The amount of available experimental data concerning corona originated space- charge flows is large; however, there is a persistent need for exploring the still overlooked or underestimated supplementary performances. These can emerge from special ion-flow field structures and can be monitored while changing pivotal geometrical parameters one at a time. Owing to the informative character of some individual sources, a demanding experimental strategy has been adopted for making the investigation on unipolar ion flows as complete as possible. A number of sources have been categorized, in this chapter, in function of the injection system and methodically monitored. Therefore, a suspended electrode becomes a V-shaped wire, a two-conductor bundle, an inclined rod, a partially sheathed wire, a pointed-pole sphere and a straight wedge. A 3D generalization of the experimentally discovered performances is given in light of the deep connection between the acknowledged general character of the homeomorphism and the notion of invariance.



Standards related to Corona

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IEEE Guide for Making Corona (Partial Discharge) Measurements on Electronics Transformers

This guide covers the detection of corona (partial discharge) and the measurement of its magnitude in electronics transformers. Test conditions, test apparatus, and test requirements are included.


IEEE Guide for Partial Discharge Measurement in Power Switchgear

Provide a guide for the measurement of partial discharges on all types of power system switchgear rated 1000 volts and above. The guide will include specific methods of test circuit/specimen calibration to ensure accurate,repeatable measurements may be made for the wide range of apparatus size, insulation types and apparatus capacitance.


IEEE Standard Definitions of Terms Relating to Corona and Field Effects of Overhead Power Lines

The document defines terms related to the areas of corona and the electromagnetic environment of overhead power lines. Its scope is to define the most widely used terms specific to or associated with overhead power-line corona and fields. This includes terms used in electric and magnetic fields, ions, radio frequency propagation, electromagnetic signals and noise, audible noise, coupled voltages and ...



Jobs related to Corona

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