Prof.
George Chen
(University of Southampton)
06/07/2016, 10:00
Dielectrics, Insulation, and Breakdown
Oral Presentation
Solid dielectrics have been widely used as insulation in power industry and often experience degradation/aging under hostile operation conditions. Their designed lifetime may be compromised. Therefore, it is important to identify the status of the insulation. Traditionally, the lifetime of solid dielectrics has been estimated using the inverse power law without the knowledge of detailed...
10.
Two-dimensional numerical modeling of electric field and correlation to breakdown – Area scaling
Enis Tuncer
(Texas Instruments Inc.)
06/07/2016, 10:30
Dielectrics, Insulation, and Breakdown
Oral Presentation
An attempt was performed to illustrate dielectric breakdown and volume/area scaling in non-uniform fields. Actual scanning electron microscopy image of electrode surfaces were used (after digitization) with an effective medium approach, where the material assumed was an representation of a composite. The digitized outline uploaded to a finite element numerical solver. Electric field calculated...
Dr
Tomohiro Furusato
(Nagasaki University)
06/07/2016, 11:00
Dielectrics, Insulation, and Breakdown
Oral Presentation
Recently, a pulsed power switch using supercritical fluids has been investigated due to its high insulation strength and excellent extinguishing properties [1], [2]. The supercritical fluid switch is expected as an alternating medium of SF6. But, little is known about the energy consumption characteristics, which is unignorable effect on the efficiency of switching devices. This study deals...
Mona Ghassemi
(INGIVRE\UQAC)
06/07/2016, 11:15
Dielectrics, Insulation, and Breakdown
Oral Presentation
Four separate FRP hot-stick flashover incidents have occurred in Canada during live-line working under steady-state system conditions at the peak of the voltage negative half-cycle during cold and freezing conditions. The incidents were reported at 500-kV AC line voltage working stress (95-96 kV/m) in 1997 and 2002 in Manitoba, and at 230-kV AC line voltage working stress (71 kV/m) twice in...
Aric Pearson
(University of Missouri)
06/07/2016, 11:30
Accelerators, Beams, and Repetitive Pulsed Power
Oral Presentation
A new type of metamaterial has been developed at the University of Missouri for use in pulsed power and high power microwave systems. These materials also have direct applications in dielectric-loaded components and nonlinear transmission lines. We present a double-positive metamaterial that incorporates high permeability, high resistivity nickel-zinc ferrite powers into a dielectric matrix....
Mrs
Chengyan Ren
(Institute of Electrical Engineering, Chinese Academy of Sciences)
06/07/2016, 11:45
Plasmas, Discharges, and Electromagnetic Phenomena
Oral Presentation
Pulsed discharge in water has been widely used in seismic prospecting. The spark source used in the sea or on the land has formed series of products, which is based on the pulsed discharge in expansive water domain, such as in the sea or in the deep well. But the traditional spark source is not applicable in some places short of water, especially in the mountain region. Therefore the...
