In the past

relevant studies mainly focused on the economy of virtual power plant operation. It is inevitable to abandon wind and light in actual operation

which is not conducive to the consumption of new energy. At the same time

under the traditional transaction mode

the distribution network

as the main opera-tor

takes the dual roles of power grid dispatching and economic transaction management into account. However

virtual power plants are mostly independent operators

and transaction information belongs to important commercial privacy. The way of distribution network coordination is not in line with the reality of the market. Therefore

a distributed transaction model

which is solved by target cascade method is proposed. While promoting the consumption of new energy in virtual power plants

information transmission to improve safety is reduced. Firstly

based on the established differential price model

the centralized transaction model is established.The coupling variable constraints between distribution network operators and virtual power plant operators are introduced into the centralized transaction model by Lagrange decomposition method

the distributed transaction model is established

and the analysis target cascade method is used to solve it. Finally

an example is given to verify the effectiveness and practicability of the model.