Abstract
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.
Highlights
In wide field of high voltage applications, the understanding of electric field and current density are very important be-cause the analysis of electric field provides crucial roles for the evolution of design and analysis of high voltage equipment
Finite Element Method (FEM) software used to simulate the model for electric field and current density to analyze the region of maximum electric field, Emax
The result obtained for sphere-sphere electrode configuration from FEM software
Summary
In wide field of high voltage applications, the understanding of electric field and current density are very important be-cause the analysis of electric field provides crucial roles for the evolution of design and analysis of high voltage equipment. Different configurations of electrode will be used in this research to observe the variation of the electric field and current density which usually impact the insulation part. Different electrode configurations such as rod-plane, plane-plane, pointed electrode- plane as testing objects will be used to determine the electric field and current density which influence the XLPE This project con-sists of experimental set up and software simulation. Greater gap is applied give less chances to breakdown and this will provide more safety condition on the overhead transmission line
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