Transformer life evaluation device and method

As one embodiment of the transformer life evaluation device, the transformer life evaluation device comprises a first storage part for storing insulating oil used for insulating a transformer; the second storage part is separated from the first storage part and stores insulating oil which is not used for insulation of the transformer; a light emitting unit that emits light of a specific wavelength; a light receiving unit that receives light emitted from the light emitting unit; a first optical cable that connects the light emitting unit and the light receiving unit, provides a movement path for light emitted from the light emitting unit and received by the light receiving unit, and is disposed so as to pass through the first storage unit; a second optical cable that connects the light emitting unit and the light receiving unit, provides a movement path for light emitted from the light emitting unit and received by the light receiving unit, and is disposed so as to pass through the second storage unit; and a c