Conceptual Design of the High Voltage Platform by Using the Aluminum Profile for Considering Dielectric Breakdown for the RAON ECRIS

2020 ◽  
Vol 76 (7) ◽  
pp. 654-657
Author(s):  
Jeongil Heo ◽  
Yonghwan Kim ◽  
Taeksu Shin
Keyword(s):  
Conceptual Design ◽  
High Voltage ◽  
Dielectric Breakdown ◽  
Aluminum Profile

scholarly journals Influencing Factors on the Dielectric Breakdown Strength in F-gas Free High-voltage Switchgear

2017 ◽  
Vol 4 (1) ◽  
pp. 52-55
Author(s):  
S. Gossmann ◽  
B. Lutz ◽  
P. G. Nikolic
Keyword(s):  
Experimental Data ◽  
Influencing Factors ◽  
High Voltage ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Inhomogeneous Field ◽  
European Regulation ◽  
Dielectric Breakdown Strength ◽  
Clean Air ◽  
Gas Pressures

After being in the focus of sciences' and industry's research and development activities for many years, the investigation of possible SF<sub>6</sub> gas-alternatives has been even more intensified after the revision of the European regulation on fluorinated gases in 2014. In this contribution the influencing factors on the dielectric breakdown of clean air are investigated for weak inhomogeneous field and gas pressures up to 10 bar. Modelling approaches and experimental data are compared.

scholarly journals High voltage subnanosecond dielectric breakdown

2002 ◽  
Author(s):  
J. Mankowski ◽  
L. Hatfield ◽  
M. Kristiansen ◽  
F.J. Agee ◽  
J.M. Lehr ◽  
...  
Keyword(s):  
High Voltage ◽  
Dielectric Breakdown

scholarly journals Impulse Breakdown Characteristics of Main Gap in the Presence of a Local Discharge

2019 ◽  
Vol 6 (2) ◽  
pp. 413-423
Author(s):  
Abderrahmane Settaouti
Keyword(s):  
Breakdown Voltage ◽  
Electric Discharge ◽  
High Voltage ◽  
Discharge Channel ◽  
Dielectric Breakdown ◽  
Metallic Electrode ◽  
Factors Affecting ◽  
Electrode Location ◽  
The Third ◽  
Breakdown Mechanism

The characteristics of impulse breakdown voltages and the influence of the position of third electrode in air gap are investigated experimentally to study the parameters influencing the breakdown voltage in the presence of metallic objects around the high voltage power apparatus with air insulation. Experimental results show that the factors affecting the breakdown voltage are the shape and the size of the grounded electrode, the third metallic electrode location and the gap length. A comparison between negative and positive polarities of the applied voltages indicates an important influence of the polarity in the dielectric breakdown mechanism. The possible mechanism by which the local electric discharge initiates the main dielectric breakdown seems to be the high electric field around the local discharge channel and the streamers protruding from its surface.

scholarly journals DIELECTRIC OIL`S TEST MACHINE WISH VOLTAGE RISE ELECTRONIC MODULE

2021 ◽  
pp. 103-108
Author(s):  
Igor Bogatirov ◽  
Helena Ponuzhdayeva ◽  
Denis Koliushko ◽  
Serhii Rudenko ◽  
Alexander Istomin
Keyword(s):  
High Voltage ◽  
Dielectric Breakdown ◽  
Sine Wave ◽  
Wave Form ◽  
Test Machine ◽  
Flow Sheet ◽  
Voltage Measurement ◽  
Voltage Step ◽  
Voltage Rise ◽  
Pulse Width Modulator

For test operations according to the liquid dielectric breakdown voltage measurement method we use high voltage machines that consist of high-voltage step-up transformer, voltage rise block, test cell with electrodes and so on. Described dielectric oil's test machine UIM – 90 with electromechanical voltage rise block. Cause of hard requirements in specification documents about voltage sine wave form on cell's electrodes, we performed field tests for UIM – 90 that help to evaluate the mains voltage impact on the test voltage distortion and measurement accuracy. Was discovered that during usage of electromechanical voltage rise block voltage steps disrupt sine wave’s form proportionally to step-up transformer’s transformation coefficient. Performed analysis of this block’s construction and established that usage of ЛАТР and mechanical voltage controller could lead to additional sine’s wave disruption. Decided to develop electronic voltage rise block which will allow to get rid of mains influence on test data. Created the algorithm of wave shaping from microcontroller, which generates voltage ramp to the amplifier representing pulse width modulator, then to the step-up transformers cascade. Proposed to use additional transformer for level matching of amplifier’s output voltage and main high voltage transformer’s input voltage. Presented flow sheet for UIM – 90 with electronic voltage step-up block and cascading start ofstep-up transformers. Provided voltage oscillograph trace and it spectrograph on the main transformer’s primary side, received due to the implementation of developed electronic voltage step-up block, prove that voltage sine wave form  doesn’t rely on mains quality. After upgraded UIM – 90 and it world analogues technical parameters analysis we could make a conclusion about it competitive capability on global level.

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