Power transformer oil heat dissipation system with three-dimensional discrete expansion surface

The invention discloses a power transformer oil heat dissipation system with a three-dimensional discrete expansion surface. The system comprises a heat dissipation vertical pipe array, the heat dissipation vertical pipe array is composed of a plurality of heat dissipation pipes which are vertically arranged in an array, discrete raised strengthening units are carved on the pipe wall of the upper part of each heat dissipation pipe, and the lower part of each heat dissipation pipe is a light pipe; the lower portion of the heat dissipation vertical pipe array is sleeved with a sleeve through which infrared radiation can penetrate, so that the chimney effect formed by the sleeve can suck more air to cool the wall face of the heat dissipation pipe; the top and the bottom of the heat dissipation vertical pipe array are respectively connected with an upper distribution header and a lower distribution header, the top of the upper distribution header is connected with an upper oil collecting pipe, and the bottom of t