599 / 2017-05-15 18:22:13

Effect of Grounding Coating on Insulation Performance for Solid Insulation Ring Main Unit

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会场 > Simulation Technologies in Switchgears

Manufacturers have paid more and more attention to solid insulation Ring Main Unit (RMU). The usage of RMU is needed more and also the requirement to its performance is higher. In this paper, a 12kV solid insulation RMU has been taken as a research object. Realistic3-D simulation models were built in Solidworks software. A simplified model of a solid insulation RMS was setup with or without shielding and Grounded coating of outer surface of the solid insulation RMU. The electric field distribution has been calculated using Ansoft Maxwell 3D. The influence of the grounded coating on the overall insulation performance was studied by analyzing the internal electric field of the vacuum circuit breaker, the busbar chamber and the circuit breaker chamber. When the surface of the solid insulating material is grounded, the electric field intensity in the air gap between the embedded pole of circuit breaker and the metal material is too large. The comparison results are available for reference to optimization design of insulating structure for a 12kV solid insulation RMU.