Core-end insulation electric stress - QuickField simulation example
This is an example of the slot insulation simulation, performed with QuickField software. To reduce the field intensity along the surface of the insulation the semi-conducting paint is applied.
How to find electric field control in composite HV insulation?
Answer Typical applications Geometry
Given
Task
Solution
Results
Engineering question
Set up a plane-parallel QuickField AC Conduction problem for a composite high-voltage insulation system and evaluate electric field control from computed field results.
electric machine slot insulation, stator winding insulation systems, HV insulation structures
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Simulation problem
Problem Type
Plane-parallel problem of AC conduction.
Relative permittivity of insulation 3.
Relative permittivity of stress grading paint 4,electrical conductivity 2 μS/m.
Rated voltage Uf = 15 kV (r.m.s.), frequency f = 50 Hz.
Calculate the electric field stress distribution.
Semiconductor is modeled as a media featuring both electric permittivity and conductivity, though small.
Maximal value of electric field stress is 8.3 kV/mm.
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