Influence of electrode configuration on the electric field distribution during transcutaneous spinal direct current stimulation of the cervical spine

2016 ◽  
Author(s):  
Sofia R. Fernandes ◽  
Ricardo Salvador ◽  
Cornelia Wenger ◽  
Mamede A. de Carvalho ◽  
Pedro C. Miranda
Keyword(s):  
Cervical Spine ◽  
Electric Field ◽  
Field Distribution ◽  
Direct Current ◽  
Electric Field Distribution ◽  
Electrode Configuration ◽  
Direct Current Stimulation ◽  
Stimulation Of

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.  

Insulation Optimization of ±1000kV DC Wall Bushing

2014 ◽  
Vol 1070-1072 ◽  
pp. 1016-1020
Author(s):  
Hong Wei Li ◽  
Zhi Yuan Pan ◽  
Jing Wang ◽  
Pan Ting Dong
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
High Voltage ◽  
Direct Current ◽  
Electric Field Distribution ◽  
Transmission System ◽  
Design And Development ◽  
Research Results ◽  
Insulation Materials ◽  
Construction Optimization

±UHV (Ultra-high voltage) DC (direct current) wall bushing is an important equipment of UHV DC transmission system. It plays a key role in the economic transfer, flexible allocation and safe usage of power. In this paper, the methods of improving the electric field distribution and insulation construction optimization are explored. The choice of insulation materials is discussed. Some calculations are made about how to optimize and design the capacitor core and how to optimize the parameters of grading rings. The research results would provide useful reference for further design and development of UHV DC wall bushings.

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