scholarly journals PASSWORD BASED ELECTRIC LOAD SWITCHING GEAR FOR THE SAFETY OF LINEMAN

2019 ◽  
Vol 1 (1) ◽  
pp. 48-55
Author(s):  
Blessed Olalekan OYEBOLA
Keyword(s):  
High Voltage ◽  
Human Life ◽  
Electrical Power ◽  
Electrical Circuit ◽  
Power Installation ◽  
Electric Load ◽  
High Current ◽  
Switching System ◽  
Current Switching

Safety of human life is of a paramount importance. In high current switching system, switch gear protects electrical circuit. However there is need to provide confidence to working engineers during installation work on high voltage installations. To prevent accidental switching on of switch gear by unauthorized workforce, this paper proposed a more life secured switching password-enabled device that strengthen working confidence and inactivate unauthorized person from hazardous switching of electrical power installation without the notice of field working engineers.

13-kV, 20-A 4H-SiC PiN Diodes for Power System Applications

2014 ◽  
Vol 778-780 ◽  
pp. 855-858 ◽  
Author(s):  
Dai Okamoto ◽  
Yasunori Tanaka ◽  
Tomonori Mizushima ◽  
Mitsuru Yoshikawa ◽  
Hiroyuki Fujisawa ◽  
...  
Keyword(s):  
Power System ◽  
High Voltage ◽  
Light Emission ◽  
Voltage Drop ◽  
High Current ◽  
Forward Voltage ◽  
Pin Diodes ◽  
Current Switching ◽  
Forward Voltage Drop

We successfully fabricated 13-kV, 20-A, 8 mm × 8 mm, drift-free 4H-SiC PiN diodes. The fabricated diodes exhibited breakdown voltages that exceeded 13 kV, a forward voltage drop of 4.9–5.3 V, and an on-resistance (RonAactive) of 12 mW·cm2. The blocking yield at 10 kV on a 3-in wafer exceeded 90%. We investigated failed devices using Candela defect maps and light-emission images and found that a few devices failed because of large defects on the chip. We also demonstrated that the fabricated diodes can be used in conducting high-voltage and high-current switching tests.

scholarly journals Analysis of Electric Field and Current Density for Different Electrode Configuration of XLPE Insulation

2018 ◽  
Vol 7 (3.36) ◽  
pp. 127 ◽  
Author(s):  
Nishanthi Sunthrasakaran ◽  
Nor Akmal Mohd Jamail ◽  
Qamarul Ezani Kamarudin ◽  
Sujeetha Gunabalan
Keyword(s):  
Electric Field ◽  
Power System ◽  
Field Distribution ◽  
High Voltage ◽  
Current Density ◽  
Electric Field Distribution ◽  
Electrical Power ◽  
High Electric Field ◽  
Electrode Configuration ◽  
Maximum Electric Field

The most important aspect influencing the circumstance and characteristics of electrical discharges is the distribution of electric field in the gap of electrodes. The study of discharge performance requires details on the variation of maximum electric field around the electrode. In electrical power system, the insulation of high voltage power system usually subjected with high electric field. The high electric field causes the degradation performance of insulation and electrical breakdown start to occur. Generally, the standard sphere gaps widely used for protective device in electrical power equipment. This project is study about the electric field distribution and current density for different electrode configuration with XLPE barrier. Hence, the different electrode configuration influences the electric field distribution. This project mainly involves the simulation in order to evaluate the maximum electric field for different electrode configuration. Finite Element Method (FEM) software has been used in this project to perform the simulation. This project also discusses the breakdown characteristics of the XLPE. The accurate evaluation of electric field distribution and maximum electric field is an essential for the determination of discharge behavior of high voltage apparatus and components. The degree of uniformity is very low for pointed rod-plane when compared to other two electrode configurations. The non- uniform electric distribution creates electrical stress within the surface of dielectric barrier. As a conclusion, when the gap distance between the electrodes increase the electric field decrease.  

Mode competition in a high-current high-voltage Gyro-BWO experiment

1995 ◽  
Author(s):  
Thomas A. Spencer ◽  
Ralph A. N. Peredo ◽  
Moe J. Arman ◽  
Kyle J. Hendricks ◽  
Kirk E. Hackett ◽  
...  
Keyword(s):  
High Voltage ◽  
Mode Competition ◽  
High Current

High voltage, high current stabilized power supplies

1962 ◽  
Vol 39 (2) ◽  
pp. 99-99
Author(s):  
Electronic Machine Co Ltd.
Keyword(s):  
High Voltage ◽  
Power Supplies ◽  
High Current

High current composite superconductor electrical power lead

1993 ◽  
Vol 209 (1-3) ◽  
pp. 291-294 ◽  
Author(s):  
G.O. Zimmerman ◽  
Y.Z. Negm ◽  
M.Z. Tahar ◽  
S. Buczkowski ◽  
R.E. Powers ◽  
...  
Keyword(s):  
Electrical Power ◽  
High Current ◽  
Composite Superconductor
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