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problem in electric field analysis of outdoor glass insulator strings
Posted 2 juil. 2015, 02:48 UTC−4 Low-Frequency Electromagnetics Version 5.0 1 Reply
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hi every body. i want to study the electric field on a suspension glass insulator string. the results are not what i expected. please look at the following boundary conditions i have chosen for different parts and let me know which mistakes i have made.
1. electrostatics interface is chosen.
2. preset study is stationary.
3. boundary condition of middle caps and pins is floating potential with Q0=0.
4. space charge density and surface charge density of dielectric parts are zero.
5. the string is mounted on the height of 6m above a ground plate.
6. instead of analyzing the whole string, only three units next to the fittings side are considered.
7. the voltage of fittings side is 400/sqrt(3) kV.
8. the voltage of third cap is 185 kV.
please help me. i have no idea what are the mistakes.
thank you.
Kayahan
1. electrostatics interface is chosen.
2. preset study is stationary.
3. boundary condition of middle caps and pins is floating potential with Q0=0.
4. space charge density and surface charge density of dielectric parts are zero.
5. the string is mounted on the height of 6m above a ground plate.
6. instead of analyzing the whole string, only three units next to the fittings side are considered.
7. the voltage of fittings side is 400/sqrt(3) kV.
8. the voltage of third cap is 185 kV.
please help me. i have no idea what are the mistakes.
thank you.
Kayahan
1 Reply Last Post 2 juil. 2015, 12:26 UTC−4
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Posted:
9 years ago
Hi Kayahan.
I'm facing this same problem when i use the 2D axisymmetric mode or a 3D model. i'm trying to analyse the voltage distribution along an insulator string too. The curious thing is: When i use a simple 2D model (I draw the geometry in a plan that contains the symmetry axis) it works pretty decent and the results are similar to what i've expected, but i need to analyse a 3D situation. I don't know why it happens and if someone could help us i would appreciate a lot.
Best Regards,
Diego Soares Lopes.
I'm facing this same problem when i use the 2D axisymmetric mode or a 3D model. i'm trying to analyse the voltage distribution along an insulator string too. The curious thing is: When i use a simple 2D model (I draw the geometry in a plan that contains the symmetry axis) it works pretty decent and the results are similar to what i've expected, but i need to analyse a 3D situation. I don't know why it happens and if someone could help us i would appreciate a lot.
Best Regards,
Diego Soares Lopes.