With the development of the power grid

the power measurement experts have been exploring new methods of transformer verification and evaluation

in order to track and grasp the operating error of the increasingly number of transformers.According to the different verification principles

this paper divides those methods into three categories: "static verification"

"on-site verification" and "pre-verification evaluation".In this paper

the principles of the three types of methods are combed

status and results of recent research are sorted out

the advantages and disadvantages are compared.The new verification and evaluation methods that do not power off

do not rely on the standard device

and do not affect the normal operation of the power grid will become the research hotspot

and will become development direction of the transformer verific ation in the future.