Method for reducing power loss of power grid

The invention discloses a method for reducing the power loss of a power grid, and the method comprises the steps: obtaining the electric energy demand of a local load of a photovoltaic power station, and dividing each load through combining with the geographic position of the load; the photovoltaic panels in the photovoltaic power station are correspondingly divided into a plurality of groups according to the load division result, and the number of the photovoltaic panels in each group corresponds to the electric energy demand quantity of the load; the electric energy output ends of the same group of photovoltaic panels are connected in series to a basic transformer, and the output voltage is preliminarily increased through the basic transformer; the output end of each basic transformer is connected with a bidirectional line, a first branch is connected with the main transformer, and grid connection is carried out after voltage transformation of the main transformer; the second branch is connected with the lo