Abstract:The aging characteristics of photovoltaic module between data acquisition system of smart substation and unit cell of transmission system are studied. An experiment system based on Protocol 8472 is designed to heat up the photovoltaic module and the five key parameters of the photovoltaic module are sampled in different temperatures. Then the sampled data are calculated with Arrhenius model to evaluate the aging characteristics of photovoltaic module. The calculation results indicate that the photovoltaic module from one manufacturer adopted by the laboratory has a longer operating life which is basically accordant with the technical documents provided by the manufacturer.