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jian qiu (Fudan University)08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationIn the future, the fast linear transformer driver (FLTD) will include a mass of gas switches. Normal triggering technology is hard to match the increase of switches through the expansion of external triggering system. Although some triggering sequences are conductive to generate better outputs, the control system is hard to realize. Actually in a certain range of the triggering sequences, the...Go to contribution page
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08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationThe Naval Surface Warfare Center, Dahlgren Division (NSWCDD) is developing a low duty factor High Voltage Power Supply (HVPS) optimized for power density and specific power. This HVPS employs state-of-the-art components and topologies that are highly optimized to the “burst mode” operation typical of high power directed energy systems. The reduced duty factor, thermal, and lifetime...Go to contribution page
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Jordan Chaparro (NSWC Dahlgren)08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationDirected energy applications exist in which pulsed power systems are required to operate repetitively with average power in excess of 100 kW for a short duration followed by a relatively long period of inactivity. The small duty-factor of such systems allows for size, weight, and power optimization of power electronic systems. This paper presents the development of a high power density, low...Go to contribution page
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08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationIn this paper, a CNT diode was tested at elevated temperatures to be used in high temperature RFID sensor. The diode was made from CNTs that were grown on a silicon-substrate that made up the cathode and an anode was positioned at a set distance away from the CNTs. A voltage was applied to the diode at a voltage level just below the diode’s turn on voltage. An external RF pulse is sent from an...Go to contribution page
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08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationPRIMA (Padova Research on ITER Megavolt Accelerator) is a large experimental facility under construction in Padova, Italy, aimed at the development and test of the full scale prototype of Neutral Beam Injectors (NBI), called MITICA, for ITER, the world’s largest experiment to prove the feasibility of fusion as a source of energy. MITICA is foreseen to accelerate a beam of 40 A of negative...Go to contribution page
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Dr Timothy Ziemba (Eagle Harbor Technologies, Inc.)08/07/2016, 13:30Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse AntennasPoster PresentationShort-pulse dielectric Two-Beam Accelerators (TBAs) have the advantage of producing high accelerating gradients near GV/m at significantly lower cost and complexity over traditional superconducting accelerators, which could significantly reduce the overall cost of accelerators for both scientific and industrial applications. One challenge is the development of a high voltage fast kicker system...Go to contribution page
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Mr Yang Fan (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University)08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationAs a device of power transmission and distribution, a power transformer is considered to be the heart of a power system, and its safe running is important. The rate of transformer failures caused by the winding deformation remains high, therefore the study on detecting the transformer winding deformation is of great significance to avoid unexpected accidents and improve the reliability of the...Go to contribution page
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Koviljka Stankovic (University of Belgrade)08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationThe influence of measurement uncertainty of type A and B as well as combined uncertainty during the measuring of fast pulses by using capacitive divider will be considered in the paper. A budget of measurement uncertainty will be formed for that purpose, the one that is characteristic for measuring fast pulses with a capacitive divider. Several types of capacitive dividers will be designed and...Go to contribution page
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Mr SUN Xiang (Electric Power Research Institute of State Grid Zhejiang Electric Power Corporation), Yiming ZHENG08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationDue to the influence of external environment and the error of measuring equipment, on-line oil chromatogram data contains obvious noise and the signal oscillates. The monitoring data is difficult to be directly applied on analysis of the equipment state. In this paper, a novel wavelet based de-noising method is proposed for preprocessing the on-line oil chromatography data. By analyzing the...Go to contribution page
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08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationDuring the transfer from monopolar ground return mode of HVDC to monopolar metallic return mode, Metallic Return Transfer Breaker (MRTB) will cut a large current and induce transient overvoltage on dc output and converter transformer. It is challenging to simulate this electromagnetic transient, because the arc procedure of MRTB is usually ignored in traditional simulation. In this paper, a...Go to contribution page
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Mr FAN ZHANG (Xi'an Jiaotong University), Yanjie Cui (Xi'an Jiaotong University)08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationAs one of the most important equipment in power system, the safe and stable operation of power transformer is of great importance and the condition maintenance and fault diagnosis can avoid breakdown of power transformer as well as save investment. Since 1980s, lots of method, such as Frequency Response Analysis, Low Voltage Impulse has been put into winding deformation detection. Among these...Go to contribution page
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08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster Presentation
In high voltage applications that require a resistive load or shunt, one must turn to non-traditional resistor construction techniques to satisfy electrical power absorption and load matching requirements, handle thermal loads, and resist distortion and destruction due to generated Lorentz forces. A readily available material that meets these requirements is 304L stainless steel. Pipes...
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Dr Alexey Mytnikov (Tomsk Polytechnical University)08/07/2016, 13:30High Voltage Design, Devices, Testing, and DiagnosticsPoster PresentationThis paper is devoted to further development of pulsed method for transformer winding diagnostics. Power transformers are key components of any electrical power systems. A big amount of the power transformer population all over the world being in service at the moment, have been reached an age of 30 – 40 years and more. Timely state control of transformer winding is necessary step to provide a...Go to contribution page
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