scholarly journals Electric Field and Potential Distribution of Porcelain Insulator using FEM Method

Author(s):  
B Mallikarjuna ◽  
K N Ravi ◽  
V Muralidhara ◽  
N Vasudev

The porcelain insulators are investigated with the high voltage transmission line in outdoor condition. The MATLAB finite element simulation are used here to test the performance of the porcelain. The PDE software is helpful in modelling the porcelain insulator in two dimensional. The pollution layer in the porcelain assumed to be uniform. The simulation demonstrates the electric field and potential distribution in the porcelain insulator. The porcelain insulators have higher field distribution near to the high voltage line. The results are represented as graphs. The MATLAB 2017b comes with preinstalled PDE tool. In this paper the PDE tool is used for the results and analysis.

Author(s):  
H. Rosli ◽  
N. A. Othman ◽  
N. A. M. Jamail ◽  
M. N. Ismail

<span lang="EN-GB">Overhead line insulators can be damaged for various reasons during their service life. Porcelain or glass insulators once damaged can affect the reliability of power system networks. This paper presents the study of voltage and electric characteristics along the surface of a broken porcelain insulator located in a string of 10 unit insulators. Three models of broken porcelain insulators were being proposed and the analysis results on voltage and electric characteristics were individually collected. The broken porcelain insulator with the most significant effect were then being investigated in the strings of 10 unit insulators. The finite element software of Quickfield was used to analyze the voltage and electric characteristics. Form the presented results, it is proven that the single porcelain insulators with broken shed at the nearest to the electrode terminal gave the most significant effect of voltage and electric field distribution pattern along the creepage distance. However, when this type of broken insulator was included in a string of 10 unit insulators, maximum average value of voltage achieved once the broken insulator was located at the HV terminal. Meanwhile, the highest electric field strength was recorded when the broken insulator was located in the middle of the string.</span>


2014 ◽  
Vol 50 (5) ◽  
pp. 1-4 ◽  
Author(s):  
Dries Vanoost ◽  
Herbert De Gersem ◽  
Joan Peuteman ◽  
Georges Gielen ◽  
Davy Pissoort

2013 ◽  
Vol 753-755 ◽  
pp. 2713-2716
Author(s):  
Jing Bo Chen ◽  
Lin Hua Piao ◽  
Zhi Wei Fan

In this paper, research the influence on position of vice nozzle in the sensitive element of nozzle array fluidic gyroscope. Using ANSYS-FLOTRAN CFD software, the finite element simulation is conducted by a series of procedures, such as two-dimensional model building of fluidic gyroscope, meshing, loads applying and equation solving. The two dimensional airflow distributions of different distances between vice nozzle and main nozzle in sensitive element of nozzle array fluidic gyroscope are calculated. The results show that, the distance between vice nozzle and main nozzle l=1.1mm, velocity of airflow at the outlet VSUM=0.71455m/s, and it is 47.6% of the velocity at the inlet, which increases by 1.75% than the distance l=0.5mm. The larger distance between vice nozzle and main nozzle has better convergence trend, it reduces the decay which causes by the airflow propagation, promotes airflow movement and increases temperatures changes without any vortex increase in sensitive cavity, so it can improve the sensitive of fluidic gyroscope.


2013 ◽  
Vol 448-453 ◽  
pp. 328-331
Author(s):  
Xin Zhao ◽  
Tao Chen ◽  
Wei Wang ◽  
Yan Hong Huang Fu

The power frequency electric field and Electric radiation generated by high voltage transmission line have a great impact on the surrounding environment, which is one of the important research topic on environmental protection and electromagnetic compatibility technology field. In this paper, the information database of typical transmission line and tower established,and the prediction of power frequency electric field intensity of high voltage transmission line has been given by using the 3-D computational method.Then, the major factors affecting the calculation results of electric field is discussed based on the measured data and the error analysis is given.


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