In-depth analysis of the impact of blockchain-based distributed power trading on the transmission and distribution network is carried out

and the corresponding model is constructed. Research shows that blockchain technology promotes distributed energy access

optimizes the allocation of power resources

reduces transmission and distribution losses

and improves network operation efficiency. The distributed power trading model enhances the dynamic response capacity of the market

stabilizes electricity price fluctuations

and improves the operation stability of the system. The case analysis verifies the practicability and effectiveness of the model

and provides theoretical basis and practical guidance for China's power market reform and distributed energy development. At the same time

it discusses the application prospects of blockchain technology in the power market and provides new ideas for the sustainable development of the power industry.