33kV cable termination - QuickField simulation example
This is an example of the cable termination simulation, performed with QuickField software.
How to find electric field stress in MV cable terminations?
Answer Typical applications Problem Type
Geometry
Given
Task
Solution
Results
References:
Typical applications
Engineering question
Solve a transient electric termination model with the AC conductor voltage represented as a sine wave.
medium-voltage cable accessories, stress control tubes, cable termination kits
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Simulation problem
Axisymmetric problem of Transient electric.
Axisymmetric problem.
Cable dimensions are taken from [1]
Cable termination dimensions are taken from [2]
AC frequency f=50 Hz, conductor potential V = 33 kV (r.m.s.).
Screen potential - 0 V (grounded).
XLPE permittivity 2.5, sheath permittivity 2.3
Insulation materials electrical conductivity 1e-15 S/m.
Stress control tube features nonlinear electrical conductivity [3]:
Calculate the electric field stress distribution.
To represent the electric potential sine wave we use the equation: V*sqrt(2) * cos(360° * f * t)
Maximal electric stress is 13 kV/mm.
[1] 33 kV single core cable.
[2] Cable Jointing Instruction: 33kV Cable Termination Single Core.
[3] Du, B. X., Li, Z. L., & Yang, Z. R. (2016). Field-dependent conductivity and space charge behavior of silicone rubber/SiC composites. IEEE Transactions on Dielectrics and Electrical Insulation, 23(5), 3108–3116.
medium-voltage cable accessories design
insulation stress grading
cable termination optimization
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