针对特高压变压器的绝缘结构特点和技术要求,提出零局部放电的设计理念,采用有限元法对柱间连接线进行了三维场的数值计算,对计算结果进行了详细分析,并得出了沿电力线各油隙的绝缘强度,为特高压变压器的绝缘设计提供了依据.
In view of the structural characteristics and technical requirements of ultra-high voltage(UHV) transformer insulation, a design theory of zero partial discharge was presented. Three-dimensional field computation was carried out on the connecting line between columns by using finite element method, and then the results were analyzed in detail and the insulation strength of every oil gap along the power line was presented, which provide a basis for the insulation design of UHV transformer.
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