With the increasing application of UHV converter transformer in power transmission,the electric field analysis of valve side outgoing line insulation structure becomes particularly important.In this paper,the electric field distribution of valve side outgoing line of UHV converter transformer is studied and analyzed,and the influence of different insulation structures on electric field distribution is discussed.The research results show that under the premise of ensuring the electrical performance,the reasonable design of insulation structure can effectively reduce the electric field gradient and improve the insulation performance,which has good practical application value.
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