Conferences related to Dielectric Liquids

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2023 Annual International Conference of the IEEE Engineering in Medicine & Biology Conference (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.


2020 IEEE International Power Modulator and High Voltage Conference (IPMHVC)

This conference provides an exchange of technical topics in the fields of Solid State Modulators and Switches, Breakdown and Insulation, Compact Pulsed Power Systems, High Voltage Design, High Power Microwaves, Biological Applications, Analytical Methods and Modeling, and Accelerators.


2020 IEEE International Solid- State Circuits Conference - (ISSCC)

ISSCC is the foremost global forum for solid-state circuits and systems-on-a-chip. The Conference offers 5 days of technical papers and educational events related to integrated circuits, including analog, digital, data converters, memory, RF, communications, imagers, medical and MEMS ICs.


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Periodicals related to Dielectric Liquids

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


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.


Display Technology, Journal of

This publication covers the theory, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, device design, materials, electronics, physics and reliabilityaspects of displays and the application of displays.


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.


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Most published Xplore authors for Dielectric Liquids

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Xplore Articles related to Dielectric Liquids

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Effect of electrical conductivity on the ion mobility in dielectric liquids

2017 IEEE 19th International Conference on Dielectric Liquids (ICDL), 2017

Conduction process in dielectric liquids has been studied for many years because of its importance in understanding the process of dielectric breakdown. As a key parameter in conduction process, ion mobility has been measured by various methods. The reversal polarity method has been widely used to accurately measure the ion mobility in the dielectric liquids. In this paper, the effect ...


Dielectric liquids for subsea high voltage equipment

2017 IEEE 19th International Conference on Dielectric Liquids (ICDL), 2017

Pressure compensated high voltage power devices filled with a dielectric liquid are being developed for supplying electrical power to subsea factories extracting oil and gas from deep sea reservoirs. The dielectric breakdown behavior of a liquid improves at high pressure so the thermal properties will determine the reliability of the power device and the size of the pressure compensated enclosure. ...


Simulations of hydrodynamic flows during streamer propagation in dielectric liquids

Proceedings of 1999 IEEE 13th International Conference on Dielectric Liquids (ICDL'99) (Cat. No.99CH36213), 1999

Presents the results of a computation of gas-dynamic flows accompanying different stages of the electric breakdown in dielectric liquids. The expansion of a rectilinear channel in the plane and cylindrical cases was considered under conditions leading to self-similar flow. The inner structure of the liquid-"plasma" transition layer was investigated. The computations were carried out of flows with shock waves that ...


Measurement of hole mobility in dielectric liquids

Proceedings of 1993 IEEE 11th International Conference on Conduction and Breakdown in Dielectric Liquids (ICDL '93), 1993

Breakdown phenomena of dielectric liquids for a needle/plane electrode have been investigated. It was found that the hole greatly influenced the breakdown of dielectric liquids. The authors report hole production and measurement of hole mobility in dielectric liquids. The electron and hole were injected from a NESA glass electrode into cyclohexane under KrF excimer laser irradiation. The NESA was coated ...


Modelling and experimental research of the non-stationary processes of conduction and space charge accumulation in dielectric liquids

Proceedings of 1999 IEEE 13th International Conference on Dielectric Liquids (ICDL'99) (Cat. No.99CH36213), 1999

The non-stationary processes of conduction and space charge accumulation in dielectric liquids are characterised by the current-time dependencies, by maximum in the curves of the voltage-current characteristics, recorded for different time intervals, by maxima in the curves of the reversal currents and by non-linear distribution of the electric field in the interelectrode spaces. The nature and purity of the dielectric ...


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Educational Resources on Dielectric Liquids

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IEEE-USA E-Books

  • Effect of electrical conductivity on the ion mobility in dielectric liquids

    Conduction process in dielectric liquids has been studied for many years because of its importance in understanding the process of dielectric breakdown. As a key parameter in conduction process, ion mobility has been measured by various methods. The reversal polarity method has been widely used to accurately measure the ion mobility in the dielectric liquids. In this paper, the effect of electrical conductivity of dielectric liquids on the ion mobility measured by the reversal polarity method is studied via the ion drift model based on the Poisson's Equation. The observed results indicate that ion mobility of dielectric liquids with high conductivity decrease with the increasing of the applied electric field. On the contrary, the ion mobility of those with the low conductivity nearly keeps constant. It is revealed that in dielectric liquids with high conductivity, it is easier to cause electric field distortion at the low voltage side, making the TOF (Time of Flight) value inaccurate and leading to a larger value of ion mobility than the actual one. Therefore, when measuring the ion mobility of nonpolar dielectric liquids, the distortion influence should be considered carefully. And the effect of the different conductivity on the ion mobility should be taken into account.

  • Dielectric liquids for subsea high voltage equipment

    Pressure compensated high voltage power devices filled with a dielectric liquid are being developed for supplying electrical power to subsea factories extracting oil and gas from deep sea reservoirs. The dielectric breakdown behavior of a liquid improves at high pressure so the thermal properties will determine the reliability of the power device and the size of the pressure compensated enclosure. The selection of a suitable dielectric liquid is therefore critical. In this article, the appropriate Figures of Merit are established to compare the thermal performance of dielectric liquids for subsea use. Four different commercially available dielectric liquids (a natural ester, a synthetic ester, a mineral transformer oil, and an isoparaffinic liquid) are evaluated using a thermal network model representing natural convection circulation in an electrical power device at 300 bar. The isoparaffinic liquid performs best, closely followed by mineral oil.

  • Simulations of hydrodynamic flows during streamer propagation in dielectric liquids

    Presents the results of a computation of gas-dynamic flows accompanying different stages of the electric breakdown in dielectric liquids. The expansion of a rectilinear channel in the plane and cylindrical cases was considered under conditions leading to self-similar flow. The inner structure of the liquid-"plasma" transition layer was investigated. The computations were carried out of flows with shock waves that are generated during the propagation of the tip of a single streamer and during the growth of a branched streamer structure. Different regimes of the streamer growth in viscous dielectric liquids were considered.

  • Measurement of hole mobility in dielectric liquids

    Breakdown phenomena of dielectric liquids for a needle/plane electrode have been investigated. It was found that the hole greatly influenced the breakdown of dielectric liquids. The authors report hole production and measurement of hole mobility in dielectric liquids. The electron and hole were injected from a NESA glass electrode into cyclohexane under KrF excimer laser irradiation. The NESA was coated with ITO (indium tin oxide). An analysis of electron and hole mobility is presented.

  • Modelling and experimental research of the non-stationary processes of conduction and space charge accumulation in dielectric liquids

    The non-stationary processes of conduction and space charge accumulation in dielectric liquids are characterised by the current-time dependencies, by maximum in the curves of the voltage-current characteristics, recorded for different time intervals, by maxima in the curves of the reversal currents and by non-linear distribution of the electric field in the interelectrode spaces. The nature and purity of the dielectric liquids and conditions on the electrode-liquid contacts determine the features of all these dependencies, where the electrochemical reactions can occur. For description of the current- time characteristic the physical and mathematical model of conduction of dielectric liquids can be used. This model supposes that the dielectric liquid contains a small amount of electrolytic impurities and represents homogeneous medium with constant permittivity. Analysis of the numerical modelling shows that for time in an interval longer than the chemical relaxation time, the charging current does not change in time. Nevertheless, as it follows from experimental data, the current in dielectric liquid can be dropped for a long much longer than the chemical. This process is sufficiently complicated and it needs further investigation. For description of the current, as a function of time in the quasi-steady-state range the developed model based on the attenuated memory principle [2] is proposed.

  • Thermal aging and degradation of thin films of natural ester dielectric liquids

    This work reports on an experimental study of the aging behavior of thin films of different classes of natural ester dielectric liquids. Thin film samples of three different natural ester liquids were prepared for the investigations and the aging experiments were performed in a medium of dry air at different temperatures (23°C and 65°C) and durations (up to around 100 days). The degradation of the samples was then evaluated in terms of changes in the dynamic viscosity of the liquid. Further analyses were also performed on the aged liquids through visual inspection, Infrared (IR) spectroscopy analysis and Oxidative Induction Time (OIT) measurements. Results show that the aging behaviors of natural ester dielectric liquids may greatly vary depending on the base chemistry of the liquid. Based on these results, it is suggested that natural ester dielectric liquids be classified into different categories considering their oleic acid content.

  • Modeling of dielectric liquids with low conductivity

    Analyzing of ionic mediums conductivity to explain an appearing of charge density was made by previous authors. Other papers give according methods, programs and results. There is a large difference between dielectric liquids (with low conductivity), quasi-neutral plasma and other mediums with strong ionic conductivity. Charge density in dielectric liquids has an important role for a conductivity process in such systems. Thanks to the fact that the charge density is different to zero, differential equation system (Poisons-Nernst- Plank system) describing such mediums is not linear. There is no exact analytical solution for such mediums. Therefore we will solve this system by computational methods. These algorithms are based on a finite difference method. Main programpsilas features are multi-components flow modeling and impulse voltage modeling. There are two kinds of source terms in equations: on electrodes and in the volume (dissociation and recombination). Results returned by the program have a shape identity with experimental results. Exact results verification by experiments is the aim of our future activity.

  • Relationship between molecular orientation and conductivity of dielectric liquids dissolving restrained water

    The state of water clusters dissolved in dielectric liquids has been studied using an IR spectrum method. Especially, the effect of water clusters on electrical conductivity is measured together with temperature dependence. In this experiment, dielectric liquids, such as nitrobenzene, benzonitrile and methylbenzoate, which are connected to an electron acceptor base, are used. From the results, it is found that the electrical conductivity of liquids increases linearly with temperature in the case of dry liquids, while in the case of liquids dissolved in water, the temperature dependence of the electrical conductivity decreases gradually with increasing water. The activation energy of liquids is inversely proportional to the amount of water. Furthermore at high temperature, the electrical conductivity does not tend to increase with dissolved water. According to the IR spectrum analysis, the large water cluster is broken by thermal energy at high temperature, while the small water cluster remains over 100/spl deg/C. Finally, it is suggested that small water clusters may not contribute to conduction at high temperature.

  • Electrophysical characteristics and testing of dielectric liquids

    The authors review work devoted to investigation of charging, discharging and reversal currents in dielectric liquids. From analysis of well-known experimental results the classification of current-time and voltage-current characteristics are obtained. In addition to the dc characteristics, ac experimental results are used for testing of technical dielectric liquids.

  • Partial discharge inception voltage measurements in dielectric liquids

    A test procedure is proposed for the measurement of the partial discharge inception voltage (PDIV) in dielectric liquids. The antecedent IEC point-to- sphere test cell arrangement is replaced with that of a point-to-plane. A dual ultrawide-narrow bandwidth PD detection system is employed, which permits to distinguish the PD pulse-burst discharges that occur in liquid dielectrics from the normal PD discharges that characterize stable voids occluded within solid-liquid insulating systems.



Standards related to Dielectric Liquids

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IEEE Guide for Test Methods and Procedures to Evaluate the Electrical Performance of Insulators in Freezing Conditions

The guide specifies procedures for testing equipment when external insulation of the test object is subjected to combinations of contamination, ice, snow, or cold fog. The methods are applicable only to tests on equipment with a rated voltage above 1 kV.The guide specifies procedures for testing equipment when external insulation of the test object is subjected to combinations of contamination, ...


Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

This standard describes methods for performing tests specified in IEEE Std C57.12.00TM and other standards applicable to liquid-immersed distribution, power, and regulating transformers. It is intended for use as a basis for performance and proper testing of such transformers. This standard applies to all liquid-immersed transformers, except instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty ...



Jobs related to Dielectric Liquids

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